Guillaume Ducellier - Academia.edu (original) (raw)

Papers by Guillaume Ducellier

La conception collaborative entraine la specification et le developpement d'outils de support... more La conception collaborative entraine la specification et le developpement d'outils de support de plus en plus complexes et varies. Les outils de gestion du cycle de vie (PLM – Product Lifecycle Management) offrent une large gamme de fonctionnalites pour la conception collaborative. Ces produits permettent de rapprocher les utilisateurs en leur fournissant des plateformes logicielles identiques. De plus, les besoins croissant de reutilisation des donnees conduisent les utilisateurs a definir des regles et des parametres permettant d'enrichir leurs modeles numeriques pour faciliter d'eventuelles modifications. Cependant, si les logiciels experts offrent pour la plupart des possibilites de definition de regles metiers, force est de constater qu'aucun PLM, a l'heure actuelle, ne propose de fonctionnalites de ce type. Dans ce contexte, cet article propose de comparer sur la base de criteres techniques et organisationnel les principales architecture PLM existantes. Cet...

The exchanges between experts represent a key challenge for collaborative product development. It... more The exchanges between experts represent a key challenge for collaborative product development. It is based on prior researches developed in the domain of Simulation Data Management and proposes the use of parameter manager integrated to the SDM and offering a full integration with the CAD Application. This parameter manager enables the updates of geometric modifications into the SDM in order to manipulate multiple geometrical configurations of the product analysed. It conducts to results using different geometrical configurations based on the same FEA Analysis and provides information regarding the impact of the geometrical parameters on the FEA. Finally, first experimentations are set and in-coming researches are presented.

IFIP Advances in Information and Communication Technology

Information Systems, used to share information, lead to the growth of heterogeneous data and then... more Information Systems, used to share information, lead to the growth of heterogeneous data and then the dependencies between them. Thus, the links and dependencies among heterogeneous and distributed data are more and more complex during daily activities of users (researchers, engineers, etc.). Our contribution is to propose a methodology to facilitate the exploitation (interrogation and sharing) of complex data in an organization. The system, we propose, tends to mix semantic approach with data management.

Les travaux de these traitent de l’enrichissement des methodes traditionnelles de gestion du cycl... more Les travaux de these traitent de l’enrichissement des methodes traditionnelles de gestion du cycle de vie des produits par une approche integrant la gestion de parametres et de regles metiers. L’objectif de cette approche est de renforcer les liens existant entre les differentes donnees techniques decrivant le produit. Nous proposons un cadre methodologique adapte a la definition et a la gestion des parametres d’un produit dans une plateforme de Product Lifecycle Management (PLM). Ce cadre s’articule autour de trois composantes qui sont la plateforme PLM, les logiciels metiers et l’application de gestion proposee. Celle-ci offre un panel de fonctionnalites pour faciliter la recuperation, la gestion et la reutilisation de parametres et de regles issus ou associes de donnees techniques. Ces fonctionnalites permettent de mieux apprehender les liens existant entre les donnees techniques et les caracteristiques fonctionnels du produit. A partir de ce cadre methodologique, nous developpon...

Current (RE) approaches are based on frozen models (parametric surface approaches) and are hardly... more Current (RE) approaches are based on frozen models (parametric surface approaches) and are hardly re-usable. Consequently, the possibility of re-engineering or re-design does not exist. This paper proposes a new research direction taking into account product lifecycle knowledge. The research direction combines a geometric approach to a functional approach for formalizing and semi-automating the rebuilding methodology. This methodology is presented and the geometrical recognition and the knowledge identification phases are set and data are organised in a functional and structural skeleton. Finally, a use case of the journal cross of a Peugeot 403 is presented for illustrating the approach.

International Journal of Computer Integrated Manufacturing

ABSTRACT Engineering changes management has become a crucial task in product lifecycle management... more ABSTRACT Engineering changes management has become a crucial task in product lifecycle management. Indeed, the good management of the modifications enables saving both money and time concerning the important competition existing in the market where the majority of mechanical products are complex systems and generally composed of sub-systems. Computer-aided design (CAD) is the use of computer systems to aid in the creation, the modification, the analysis, and/or the optimisation of a design. Actually, CAD softwares are used to increase the productivity of the designer and improve the quality of design. Therefore, researchers aim to improve those CAD systems in order to increase their efficiency and facilitate the designer task. Consequently, the objective of the authors is to develop a model to help the user to manage modifications affecting a simple part of an assembly CAD model, before propagating it to the whole assembly model. Thus, as a first step, the initial and the modified version of a considered part have to be compared in order to detect the affected features, pick up the topologic and geometric modifications, and then calculate the ratio of modification. This ratio measures the importance of changes that affect the initial part, and it will be useful later on while propagating this change.

EasyChair Preprints

Managing an infrastructure today from the idea to the in-use phases is mainly addressed through B... more Managing an infrastructure today from the idea to the in-use phases is mainly addressed through BIM (Building Information Modelling) functionalities. As BIM often focuses on the management of building data, it hardly covers the specificities of infrastructures. The problem becomes critical when dealing with linear infrastructures. Such infrastructures are driven by linear installations across multiple constructions in which interactions with specific information, geotechnical or topographic information for example, are required.As PLM (Product Lifecycle Management) has shown its efficiency in the past decade for the management of different expertise through a common information system, we propose to study the functionalities covered by PLM. By comparing them to those covered by BIM, we will be able to identify a basic set of functions that could meet linear infrastructures management requirements.

IFAC-PapersOnLine, 2016

Abstract Information Systems, used to share information, lead to the growth of heterogeneous data... more Abstract Information Systems, used to share information, lead to the growth of heterogeneous data and then the dependencies between them. Thus, the links and dependencies among heterogeneous and distributed data are more and more complex during daily activities of users (engineers, researchers, etc.). Ontology is currently used to enhance the knowledge sharing and the data integration in many information systems. Our contribution is to propose a methodology to facilitate the exploitation (interrogation and sharing) of data in an organization using Bio-Imaging ontology.

Traceability and Capitalization, 2016

IFIP Advances in Information and Communication Technology, 2015

Information Systems, used to share information, lead to the growth of heterogeneous data and then... more Information Systems, used to share information, lead to the growth of heterogeneous data and then the dependencies between them. Thus, the links and dependencies among heterogeneous and distributed data are more and more complex during daily activities of users (engineers, etc.). Ontology is currently used to enhance the knowledge sharing and the data integration in many information systems. Our contribution is to propose a methodology to facilitate the exploitation (interrogation and sharing) of data in an organization.

The aim of the reverse engineering (RE) process is to use Middle of Life (MOL) physical product t... more The aim of the reverse engineering (RE) process is to use Middle of Life (MOL) physical product to generate data to be used in the Beginning of life (BOL) of a new product lifecycle. It requires a lot of manipulations to transform a point cloud in a “frozen geometry”. Nevertheless, in order to support engineering changes in a new design process, the product should be represented with a parametric geometry. A knowledge-based approach is proposed to provide the product’s parametric geometry. Using this approach, assumptions are made on the MOL’s product and on the BOL’s one. It leads to manage at least two geometries that are most of the time quite different due to the different design intents and manufacturing means. The paper proposes a data model to manage the multi-CAD models of the knowledge-based RE process as an extension of the Core Product Model (CPM) for RE.

International Journal of Product Lifecycle Management, 2015

The paper presents smooth product information and knowledge exchange (SPIKE), an ontology–based m... more The paper presents smooth product information and knowledge exchange (SPIKE), an ontology–based methodology for exchanging information between product lifecycle management (PLM) systems. SPIKE does not concern a limited manufacturing field or specific industrial sector. The concerned information deals with the whole product lifecycle information except the geometric or 3D data. The product lifecycle information is not handled exclusively by PLM systems; they are also managed by other systems such as enterprise resource planning. The proposed exchange approach does not lead to any technology constraint or tool. It presents an implementation of SPIKE based on the standard semantic web languages via the I–Semantec platform.

International Journal on Interactive Design and Manufacturing (IJIDeM), 2014

This paper focuses on the impact of Design Change Orders (DCO) on the product data into a PLM pla... more This paper focuses on the impact of Design Change Orders (DCO) on the product data into a PLM platform. In a context of concurrent engineering, we concentrate on the management of product data associated to the product structure. As PLM platform architecture is not fully adapted to conduct DCO on the product data, we propose a specific approach for facilitating DCO execution and comprehension. In this context, a constraint based approach is proposed. The aim of this approach is to provide a view of all the product data concerned by the DCO at the beginning of the DCO process. Based on this view, called product data constraint graph, the project leader can assign the corresponding resources to the DCO process. An example illustrates the benefits of our proposition and the first results concerning this underdevelopment approach are presented.

-L'entreprise étendue devrait permettre de répondre aux objectifs bien connus de l'industrie aéro... more -L'entreprise étendue devrait permettre de répondre aux objectifs bien connus de l'industrie aéronautique, à savoir réduire le temps de mise sur le marché, réduire les coûts de développement et partager les risques entre les partenaires. La réalisation d'un tel concept ne pourra passer qu'à travers des approches comme l'ingénierie collaborative, qui vise à lier les départements en charge du développement produit entre les différents partenaires du projet. Dans ce cadre, le succès des plateformes dites « d'ingénierie collaborative » est devenu une des préoccupations majeures des principaux acteurs industriels de l'aérospatial. En même temps, les aéronefs se complexifient indéniablement et sont même déjà hautement pluridisciplinaires. C'est pourquoi, la collaboration dans les projets de développement produit se doit de supporter la conception intégrée. Après avoir fait une brève relecture de la littérature sur ces différents concepts, ce papier présentera les spécifications d'une plateforme d'ingénierie collaborative à destination de l'industrie aéronautique : La plateforme SEINE (Standard pour l'Entreprise Innovante Numérique Etendue). Puis nous verrons comment une telle plateforme pourrait être enrichie en matière de conception intégrée. Abstract-Well known challenges in Aeronautic industry, namely reduced time to market, lower development costs and shared risks between partners, could be reached thanks to the innovative design methods supported by PLM technologies. Reaching such objective will be allowed through methods like integrated design or collaborative engineering enabling close exchanges between the project partners. In fact, the success of PLM platforms in supporting such methods is becoming one of the major stakes in the global networking organization. At the same time, aircrafts are obviously systems integrating multidisciplinary technologies and companies are highly multiple expertises. This paper proposes a survey on integrated design methods, PLM technologies and related subjects. It also presents the specification and the development of a collaborative design platform, as part of SEINE project (Standard pour l'Entreprise Innovante Etendue), aiming to improve collaboration in French aeronautics supply chain. Finally, this paper proposes how to include multiple expertise and integrated design in this "platform supporting" partners collaboration.

ABSTRACT Nos travaux de thèse s’inscrivent dans la problématique de la Gestion de données et de l... more ABSTRACT Nos travaux de thèse s’inscrivent dans la problématique de la Gestion de données et de la dynamique des connaissances en ingénierie numérique, le but étant d’améliorer la chaîne CAO-Calcul. L'objectif est de contribuer à la clarification et à la standardisation des flux d’information existant entre la conception et la simulation dans un contexte PLM. Cette contribution se fera sous forme d’un scénario à caractère industriel.

Design is a collaborative activity, in which several actors with different skills work together t... more Design is a collaborative activity, in which several actors with different skills work together to reach a given goal. Design project team is a short gaged in other projects with other organizations. Moreover, projects can be done by several companies; actors can belong to different countries (i.e. in big companies). Given these types of organizations, the challenge for knowledge management is how to le help to solve new design problems. Knowledge is commonly defined by data and information used by an actor in a specific context [Matta et al. 2001]. So knowledge is produced in project activities for a given goal. Knowledge management aims at enhancing organizational learning in a company based on knowledge produced. It is defined as a cycle of transformation from tacit to explicit knowledge in a company [Nonaka 1991]. This type of organizational learning will be based on "k "knowing when" [Easterby-Smith and Lyles 2003]. In this paper, we try to face the problem of learning from design projects. As mentioned above, we need to make explicit the "knowing how" as well as "knowing when". These elements are in gene produced in decision-making process related to a given context. Therefore, the questions we are going How to represent decision How to extract knowledge in decision Is the knowledge valuable for reuse purpose? We discuss in this paper these questions and present an approach that help to keep track of decision making process and to classify design rational concepts in order to enhance learning from it. In design projects several actors work together for a given goal. Facing a specific problem, actors propose solutions related to different aspects of the problem. Then they discuss integration of these solutions to solve the problem [Matta et al. 1998]. In this collaborative dec knowledge is produced. This knowledge is not generally explicit in a project. Meeting report is not sufficient to extract this knowledge. So, it is necessary to develop techniques to represent collaborative making in design. Knowledge produced in collaborative activity is different from one related to a given field [Ducellier The nature of knowledge is different: The profession knowledge is related to a field and contains routines and strategies developed indivi number of experiments. The cooperative knowledge is related to several fields, i.e. several DESIGN CONFERENCE-DESIGN 20 , 2014.

Design projects have evolved to be collaborative, concurrent and multidisciplinary. Due to these ... more Design projects have evolved to be collaborative, concurrent and multidisciplinary. Due to these changes, knowledge management for design projects faces new challenges, in order to represent all the elements in a collaborative design project, it is necessary to consider not only decision-making process, but also its context and interaction with other elements.

Nowadays, the increasing heterogeneity of CAx (Computer Aided x) applications and Product Lifecyc... more Nowadays, the increasing heterogeneity of CAx (Computer Aided x) applications and Product Lifecycle Management (PLM) systems raises the problem of knowledge management in information and Communication Technology based applications. This appears to be a real barrier for effective collaboration between experts and tools involved in product development process. PLM systems are considered strategic tools to allow collaboration within the product development process, but they still fall short of providing the full range of desired functionalities. This paper proposes a collaborative Semantic Web environment, using a Relationship Manager, to improve the integration between CAx applications and usual data management applications, especially between CAD (Computer Aided Design), CAE (Computer Aided Engineering) tools and data management applications. The Relationship Manager is used as a centralized process that enables verification and validation of design decision-making and numerical simulation results, in accordance with the functional requirements of the product. The aim of the paper is to discuss the collaborative design process as considered in our work, and then introduce the components of the proposed Relationship Manager (RsM), presenting the functional and technical aspects of the proposed Semantic Web approach and related platform to link requirements engineering, product design and numerical simulation.

La conception collaborative entraine la specification et le developpement d'outils de support... more La conception collaborative entraine la specification et le developpement d'outils de support de plus en plus complexes et varies. Les outils de gestion du cycle de vie (PLM – Product Lifecycle Management) offrent une large gamme de fonctionnalites pour la conception collaborative. Ces produits permettent de rapprocher les utilisateurs en leur fournissant des plateformes logicielles identiques. De plus, les besoins croissant de reutilisation des donnees conduisent les utilisateurs a definir des regles et des parametres permettant d'enrichir leurs modeles numeriques pour faciliter d'eventuelles modifications. Cependant, si les logiciels experts offrent pour la plupart des possibilites de definition de regles metiers, force est de constater qu'aucun PLM, a l'heure actuelle, ne propose de fonctionnalites de ce type. Dans ce contexte, cet article propose de comparer sur la base de criteres techniques et organisationnel les principales architecture PLM existantes. Cet...

The exchanges between experts represent a key challenge for collaborative product development. It... more The exchanges between experts represent a key challenge for collaborative product development. It is based on prior researches developed in the domain of Simulation Data Management and proposes the use of parameter manager integrated to the SDM and offering a full integration with the CAD Application. This parameter manager enables the updates of geometric modifications into the SDM in order to manipulate multiple geometrical configurations of the product analysed. It conducts to results using different geometrical configurations based on the same FEA Analysis and provides information regarding the impact of the geometrical parameters on the FEA. Finally, first experimentations are set and in-coming researches are presented.

IFIP Advances in Information and Communication Technology

Information Systems, used to share information, lead to the growth of heterogeneous data and then... more Information Systems, used to share information, lead to the growth of heterogeneous data and then the dependencies between them. Thus, the links and dependencies among heterogeneous and distributed data are more and more complex during daily activities of users (researchers, engineers, etc.). Our contribution is to propose a methodology to facilitate the exploitation (interrogation and sharing) of complex data in an organization. The system, we propose, tends to mix semantic approach with data management.

Les travaux de these traitent de l’enrichissement des methodes traditionnelles de gestion du cycl... more Les travaux de these traitent de l’enrichissement des methodes traditionnelles de gestion du cycle de vie des produits par une approche integrant la gestion de parametres et de regles metiers. L’objectif de cette approche est de renforcer les liens existant entre les differentes donnees techniques decrivant le produit. Nous proposons un cadre methodologique adapte a la definition et a la gestion des parametres d’un produit dans une plateforme de Product Lifecycle Management (PLM). Ce cadre s’articule autour de trois composantes qui sont la plateforme PLM, les logiciels metiers et l’application de gestion proposee. Celle-ci offre un panel de fonctionnalites pour faciliter la recuperation, la gestion et la reutilisation de parametres et de regles issus ou associes de donnees techniques. Ces fonctionnalites permettent de mieux apprehender les liens existant entre les donnees techniques et les caracteristiques fonctionnels du produit. A partir de ce cadre methodologique, nous developpon...

Current (RE) approaches are based on frozen models (parametric surface approaches) and are hardly... more Current (RE) approaches are based on frozen models (parametric surface approaches) and are hardly re-usable. Consequently, the possibility of re-engineering or re-design does not exist. This paper proposes a new research direction taking into account product lifecycle knowledge. The research direction combines a geometric approach to a functional approach for formalizing and semi-automating the rebuilding methodology. This methodology is presented and the geometrical recognition and the knowledge identification phases are set and data are organised in a functional and structural skeleton. Finally, a use case of the journal cross of a Peugeot 403 is presented for illustrating the approach.

International Journal of Computer Integrated Manufacturing

ABSTRACT Engineering changes management has become a crucial task in product lifecycle management... more ABSTRACT Engineering changes management has become a crucial task in product lifecycle management. Indeed, the good management of the modifications enables saving both money and time concerning the important competition existing in the market where the majority of mechanical products are complex systems and generally composed of sub-systems. Computer-aided design (CAD) is the use of computer systems to aid in the creation, the modification, the analysis, and/or the optimisation of a design. Actually, CAD softwares are used to increase the productivity of the designer and improve the quality of design. Therefore, researchers aim to improve those CAD systems in order to increase their efficiency and facilitate the designer task. Consequently, the objective of the authors is to develop a model to help the user to manage modifications affecting a simple part of an assembly CAD model, before propagating it to the whole assembly model. Thus, as a first step, the initial and the modified version of a considered part have to be compared in order to detect the affected features, pick up the topologic and geometric modifications, and then calculate the ratio of modification. This ratio measures the importance of changes that affect the initial part, and it will be useful later on while propagating this change.

EasyChair Preprints

Managing an infrastructure today from the idea to the in-use phases is mainly addressed through B... more Managing an infrastructure today from the idea to the in-use phases is mainly addressed through BIM (Building Information Modelling) functionalities. As BIM often focuses on the management of building data, it hardly covers the specificities of infrastructures. The problem becomes critical when dealing with linear infrastructures. Such infrastructures are driven by linear installations across multiple constructions in which interactions with specific information, geotechnical or topographic information for example, are required.As PLM (Product Lifecycle Management) has shown its efficiency in the past decade for the management of different expertise through a common information system, we propose to study the functionalities covered by PLM. By comparing them to those covered by BIM, we will be able to identify a basic set of functions that could meet linear infrastructures management requirements.

IFAC-PapersOnLine, 2016

Abstract Information Systems, used to share information, lead to the growth of heterogeneous data... more Abstract Information Systems, used to share information, lead to the growth of heterogeneous data and then the dependencies between them. Thus, the links and dependencies among heterogeneous and distributed data are more and more complex during daily activities of users (engineers, researchers, etc.). Ontology is currently used to enhance the knowledge sharing and the data integration in many information systems. Our contribution is to propose a methodology to facilitate the exploitation (interrogation and sharing) of data in an organization using Bio-Imaging ontology.

Traceability and Capitalization, 2016

IFIP Advances in Information and Communication Technology, 2015

Information Systems, used to share information, lead to the growth of heterogeneous data and then... more Information Systems, used to share information, lead to the growth of heterogeneous data and then the dependencies between them. Thus, the links and dependencies among heterogeneous and distributed data are more and more complex during daily activities of users (engineers, etc.). Ontology is currently used to enhance the knowledge sharing and the data integration in many information systems. Our contribution is to propose a methodology to facilitate the exploitation (interrogation and sharing) of data in an organization.

The aim of the reverse engineering (RE) process is to use Middle of Life (MOL) physical product t... more The aim of the reverse engineering (RE) process is to use Middle of Life (MOL) physical product to generate data to be used in the Beginning of life (BOL) of a new product lifecycle. It requires a lot of manipulations to transform a point cloud in a “frozen geometry”. Nevertheless, in order to support engineering changes in a new design process, the product should be represented with a parametric geometry. A knowledge-based approach is proposed to provide the product’s parametric geometry. Using this approach, assumptions are made on the MOL’s product and on the BOL’s one. It leads to manage at least two geometries that are most of the time quite different due to the different design intents and manufacturing means. The paper proposes a data model to manage the multi-CAD models of the knowledge-based RE process as an extension of the Core Product Model (CPM) for RE.

International Journal of Product Lifecycle Management, 2015

The paper presents smooth product information and knowledge exchange (SPIKE), an ontology–based m... more The paper presents smooth product information and knowledge exchange (SPIKE), an ontology–based methodology for exchanging information between product lifecycle management (PLM) systems. SPIKE does not concern a limited manufacturing field or specific industrial sector. The concerned information deals with the whole product lifecycle information except the geometric or 3D data. The product lifecycle information is not handled exclusively by PLM systems; they are also managed by other systems such as enterprise resource planning. The proposed exchange approach does not lead to any technology constraint or tool. It presents an implementation of SPIKE based on the standard semantic web languages via the I–Semantec platform.

International Journal on Interactive Design and Manufacturing (IJIDeM), 2014

This paper focuses on the impact of Design Change Orders (DCO) on the product data into a PLM pla... more This paper focuses on the impact of Design Change Orders (DCO) on the product data into a PLM platform. In a context of concurrent engineering, we concentrate on the management of product data associated to the product structure. As PLM platform architecture is not fully adapted to conduct DCO on the product data, we propose a specific approach for facilitating DCO execution and comprehension. In this context, a constraint based approach is proposed. The aim of this approach is to provide a view of all the product data concerned by the DCO at the beginning of the DCO process. Based on this view, called product data constraint graph, the project leader can assign the corresponding resources to the DCO process. An example illustrates the benefits of our proposition and the first results concerning this underdevelopment approach are presented.

-L'entreprise étendue devrait permettre de répondre aux objectifs bien connus de l'industrie aéro... more -L'entreprise étendue devrait permettre de répondre aux objectifs bien connus de l'industrie aéronautique, à savoir réduire le temps de mise sur le marché, réduire les coûts de développement et partager les risques entre les partenaires. La réalisation d'un tel concept ne pourra passer qu'à travers des approches comme l'ingénierie collaborative, qui vise à lier les départements en charge du développement produit entre les différents partenaires du projet. Dans ce cadre, le succès des plateformes dites « d'ingénierie collaborative » est devenu une des préoccupations majeures des principaux acteurs industriels de l'aérospatial. En même temps, les aéronefs se complexifient indéniablement et sont même déjà hautement pluridisciplinaires. C'est pourquoi, la collaboration dans les projets de développement produit se doit de supporter la conception intégrée. Après avoir fait une brève relecture de la littérature sur ces différents concepts, ce papier présentera les spécifications d'une plateforme d'ingénierie collaborative à destination de l'industrie aéronautique : La plateforme SEINE (Standard pour l'Entreprise Innovante Numérique Etendue). Puis nous verrons comment une telle plateforme pourrait être enrichie en matière de conception intégrée. Abstract-Well known challenges in Aeronautic industry, namely reduced time to market, lower development costs and shared risks between partners, could be reached thanks to the innovative design methods supported by PLM technologies. Reaching such objective will be allowed through methods like integrated design or collaborative engineering enabling close exchanges between the project partners. In fact, the success of PLM platforms in supporting such methods is becoming one of the major stakes in the global networking organization. At the same time, aircrafts are obviously systems integrating multidisciplinary technologies and companies are highly multiple expertises. This paper proposes a survey on integrated design methods, PLM technologies and related subjects. It also presents the specification and the development of a collaborative design platform, as part of SEINE project (Standard pour l'Entreprise Innovante Etendue), aiming to improve collaboration in French aeronautics supply chain. Finally, this paper proposes how to include multiple expertise and integrated design in this "platform supporting" partners collaboration.

ABSTRACT Nos travaux de thèse s’inscrivent dans la problématique de la Gestion de données et de l... more ABSTRACT Nos travaux de thèse s’inscrivent dans la problématique de la Gestion de données et de la dynamique des connaissances en ingénierie numérique, le but étant d’améliorer la chaîne CAO-Calcul. L'objectif est de contribuer à la clarification et à la standardisation des flux d’information existant entre la conception et la simulation dans un contexte PLM. Cette contribution se fera sous forme d’un scénario à caractère industriel.

Design is a collaborative activity, in which several actors with different skills work together t... more Design is a collaborative activity, in which several actors with different skills work together to reach a given goal. Design project team is a short gaged in other projects with other organizations. Moreover, projects can be done by several companies; actors can belong to different countries (i.e. in big companies). Given these types of organizations, the challenge for knowledge management is how to le help to solve new design problems. Knowledge is commonly defined by data and information used by an actor in a specific context [Matta et al. 2001]. So knowledge is produced in project activities for a given goal. Knowledge management aims at enhancing organizational learning in a company based on knowledge produced. It is defined as a cycle of transformation from tacit to explicit knowledge in a company [Nonaka 1991]. This type of organizational learning will be based on "k "knowing when" [Easterby-Smith and Lyles 2003]. In this paper, we try to face the problem of learning from design projects. As mentioned above, we need to make explicit the "knowing how" as well as "knowing when". These elements are in gene produced in decision-making process related to a given context. Therefore, the questions we are going How to represent decision How to extract knowledge in decision Is the knowledge valuable for reuse purpose? We discuss in this paper these questions and present an approach that help to keep track of decision making process and to classify design rational concepts in order to enhance learning from it. In design projects several actors work together for a given goal. Facing a specific problem, actors propose solutions related to different aspects of the problem. Then they discuss integration of these solutions to solve the problem [Matta et al. 1998]. In this collaborative dec knowledge is produced. This knowledge is not generally explicit in a project. Meeting report is not sufficient to extract this knowledge. So, it is necessary to develop techniques to represent collaborative making in design. Knowledge produced in collaborative activity is different from one related to a given field [Ducellier The nature of knowledge is different: The profession knowledge is related to a field and contains routines and strategies developed indivi number of experiments. The cooperative knowledge is related to several fields, i.e. several DESIGN CONFERENCE-DESIGN 20 , 2014.

Design projects have evolved to be collaborative, concurrent and multidisciplinary. Due to these ... more Design projects have evolved to be collaborative, concurrent and multidisciplinary. Due to these changes, knowledge management for design projects faces new challenges, in order to represent all the elements in a collaborative design project, it is necessary to consider not only decision-making process, but also its context and interaction with other elements.

Nowadays, the increasing heterogeneity of CAx (Computer Aided x) applications and Product Lifecyc... more Nowadays, the increasing heterogeneity of CAx (Computer Aided x) applications and Product Lifecycle Management (PLM) systems raises the problem of knowledge management in information and Communication Technology based applications. This appears to be a real barrier for effective collaboration between experts and tools involved in product development process. PLM systems are considered strategic tools to allow collaboration within the product development process, but they still fall short of providing the full range of desired functionalities. This paper proposes a collaborative Semantic Web environment, using a Relationship Manager, to improve the integration between CAx applications and usual data management applications, especially between CAD (Computer Aided Design), CAE (Computer Aided Engineering) tools and data management applications. The Relationship Manager is used as a centralized process that enables verification and validation of design decision-making and numerical simulation results, in accordance with the functional requirements of the product. The aim of the paper is to discuss the collaborative design process as considered in our work, and then introduce the components of the proposed Relationship Manager (RsM), presenting the functional and technical aspects of the proposed Semantic Web approach and related platform to link requirements engineering, product design and numerical simulation.