Design Process Modeling for the Future Cad Systems (original) (raw)

Design Database Modeling for the Future CAD Systems

To develop the future CAD systems with concurrent engineering functions, a new CAD model, called Concurrent Engineering-oriented Design Database Representation Model (CE-DDRM), is introduced in this research for supporting various lifecycle aspects in concurrent design. In this model, concepts and behaviors of different design database modeling components, including entities, properties, relationships, tasks, and specifications, are defined at meta-class level. Design database is modeled at two different levels, class level and instance level, representing generic design libraries and special design cases, respectively.

A concurrent engineering-oriented design database representation model

Computer-Aided Design, 2004

A concurrent engineering-oriented design database representation model (CE-DDRM) is introduced in this research for supporting various life-cycle aspects in concurrent design. In this model, concepts and behaviors of different design database modeling components, including entities, properties, relationships, tasks, and specifications, are defined at meta-class level. Design database is modeled at two different levels, class level and instance level, representing generic design libraries and special design cases, respectively. A Web-based system architecture is proposed to model distributed design database and allow team-members for different product development life-cycle aspects at different locations to access the design database. This newly introduced approach provides the foundation for developing the next generation CAD systems with concurrent engineering functions. q

A framework for feature-based representation of the design process

Engineering with Computers, 1990

The design process is very complicated and differs with each engineer. The development of computer-based aids for design must take this into consideration and allow for the nuances of the individual. A generic representation of the information used in design is required for the development of any data base that supports the design aid. A properly designed data base or set of data bases can help integrate CAD, expert system, and ancillary programs, thereby forming an intelligent design system. A model has been developed that allows the information requirements of the design process to be analyzed. A data base for an intelligent design system can be developed based on these results.

A database supporting evolutionary product model development for design

Automation in Construction, 1999

This paper presents the facilities in the EDM-2 product modeling and database language that support model evolution. It reviews the need for model evolution as a system andror language requirement to support product modeling. Four types of Ž . Ž . Ž . model evolution are considered: 1 translation between distinct models, 2 deriving views from a central model, 3

A data structure for a generic design model

IFIP Advances in Information and Communication Technology, 1996

Modern CAD systems need to be enriched by knowledge about the design process for classes of artifacts of a given design domain. This paper presents a generic model to capture knowledge about the product and its design process. This integrated model is made of a process model, describing the sequence of design tasks and states, and a product model, describing features of the product from different points of view.

Integration of Design Tools and Knowledge Capture into a CAD System: A Case Study

Concurrent Engineering, 2010

Conceptual design phase is partially supported by product lifecycle management/computer-aided design (PLM/CAD) systems causing discontinuity of the design information flow: customer needs -functional requirements -key characteristics -design parameters (DPs) -geometric DPs. Aiming to address this issue, it is proposed a knowledge-based approach is proposed to integrate quality function deployment, failure mode and effects analysis, and axiomatic design into a commercial PLM/CAD system. A case study, main subject of this article, was carried out to validate the proposed process, to evaluate, by a pilot development, how the commercial PLM/CAD modules and application programming interface could support the information flow, and based on the pilot scheme results to propose a full development framework.

ScienceDirect Development of an approach for Knowledge-Based System for CAD modelling

elsevier, 2018

In the process of reducing the production cost and satisfying the customer and to sustain in the current volatile market, the manufacturing companies are looking for alternate processes and methods of designing and manufacturing. The conventional CAD/CAM tools are developed to meet the general needs of the market, but not the rapid or specific requirements of the market or customer. Consequently, the companies are looking to customize or tailor the CAD/CAM tools to improve their effectiveness. For this reason, the scope of research in the field of customization of designing tools has improved rapidly in the recent time. This paper discusses an introductory approach for developing an knowledge based system for CAD modelling using customization process of an CAD/CAM tool. The intension behind the development of the system is to reduce the production time and cost. The effectiveness of the proposed system has been examined using an industrial case study.

Patterns, heuristics for architectural design support: making use of evolutionary modelling in design

2010

Software used by architectural and industrial designers - has moved from becoming a tool for drafting, towards use in verification, simulation, project management and project sharing remotely. In more advanced models, parameters for the designed object can be adjusted so a family of variations can be produced rapidly. With advances in computer aided design technology, numerous design options can now be generated and analyzed in real time. However the use of digital tools to support design as an activity is still at an early stage and has largely been limited in functionality with regard to the design process. To date, major CAD vendors have not developed an integrated tool that is able to both leverage specialized design knowledge from various discipline domains (known as expert knowledge systems) and support the creation of design alternatives that satisfy different forms of constraints. We propose that evolutionary computing and machine learning be linked with parametric design te...