A high-throughput application for the dynamic analysis of structures on a Grid environment (original) (raw)
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GRID technology for structural analysis
Advances in Engineering Software, 2007
This paper presents a High Performance Computing-based application for 3D structural analysis of buildings. Since the solution of a large linear system of sparse equations supposes the most time-consuming phase, several public domain parallel numerical libraries, with state-of-the-art capabilities, have been tested. The parallel application developed allows reducing the analysis time and simulating larger structures. Nevertheless, structural engineers rarely have available high cost parallel machines. Thus, a Grid Structural Analysis service, that integrates the parallel application, has been implemented, taking advantage of computers geographically distributed in Internet. This service makes it possible to simulate in a realistic way, and concurrently, a high number of different structural alternatives of large dimension buildings during their design stage, without considering structural simplifications or investing in expensive computers.
Implementation of Grid-computing Framework for Simulation in Multi-scale Structural Analysis
IPTEK The Journal for Technology and Science, 2010
A new grid-computing framework for simulation in multi-scale structural analysis is presented. Two levels of parallel processing will be involved in this framework: multiple local distributed computing environments connected by local network to form a grid-based cluster-to-cluster distributed computing environment. To successfully perform the simulation, a large-scale structural system task is decomposed into the simulations of a simplified global model and several detailed component models using various scales. These correlated multi-scale structural system tasks are distributed among clusters and connected together in a multi-level hierarchy and then coordinated over the internet. The software framework for supporting the multi-scale structural simulation approach is also presented. The program architecture design allows the integration of several multi-scale models as clients and servers under a single platform. To check its feasibility, a prototype software system has been designed and implemented to perform the proposed concept. The simulation results show that the software framework can increase the speedup performance of the structural analysis. Based on this result, the proposed grid-computing framework is suitable to perform the simulation of the multi-scale structural analysis.
Abstract. This paper describes Grid4Build, a high performance Grid approach that enables to perform 3D linear analysis and visualisation of building structures. The system involves three independent components: a GUI Client, a Structural Analysis Grid Service and an HPC-based structural simulator. The GUI Client is in charge to assist the user in the pre-processing and post-processing stages. The HPC-based application is a simulator that performs the 3D linear static and dynamic analysis of building structures.
A service oriented system for on demand dynamic structural analysis over computational Grids
2007
In this paper we describe the implementation of a service oriented environment that enables to couple a parallel application, which performs the 3D linear dynamic structural analysis of high-rise buildings, to a Grid Computing infrastructure. The Grid service, developed under Globus Toolkit 4, exposes the dynamic simulation as a service to the structural scientific community.
Dynamic Analysis of Low-Rise Buildings on Microcomputers
Computer-aided Civil and Infrastructure Engineering, 2008
A alysis of low-rise steel frame buildings on microcomputers is described. The model consists of an assemblage of planar frames with either braced or moment resisting connections. All but the frame lateral degrees of freedom are removed using static condensation prior to assemblage of the overall model. Floor diaphragms are modeled as either flexible or completely rigid in. their own planes. Linear elastic behavior is assumed in the model and time-history dynamic analysis is performed using the mode-acceleration method. A FoRrmN computer program was written to implement the model on a microcomputer and a sample analysis of an actual building is presented to illustrate its use. The program was envisioned as a simplified analysis and design tool which could aid a designer in investigating a proposed structure or in rehabilitating an existing one for lateral forces. Address correspondence lo Prof B I Goodno, k h o o l d Civil Enginming, Georgia lnsrihlk of Technology. Allanu, c e g l i a 30132 their design and construction, low-rise buildings in many parts of the United States may not be able to resist dynamic loadings satisfactorily. While mainframe computers are usually required for analysis of high-rise buildings, microcomputers can be inexpensive and effective tools for analysis and design of low-rise structures pro
Achievements and Experiences from a Grid-Based Earthquake Analysis and Modelling Study
2006 Second IEEE International Conference on e-Science and Grid Computing (e-Science'06), 2006
We have developed and used a grid-based geoinformatics infrastructure and analytical methods for investigating the relationship between macro and microscale earthquake deformational processes by linking geographically distributed and computationally intensive earthquake monitoring and modelling tools. Using this infrastructure, measurement of lateral co-seismic deformation is carried out with imageodesy algorithms running on servers at the London eScience Centre. The resultant deformation field is used to initialise geomechanical simulations of the earthquake deformation running on supercomputers based at the University of Oklahoma. This paper describes the details of our work, summarizes our scientific results and details our experiences from implementing and testing the distributed infrastructure and analysis workflow.
Integrated Platform for the Analysis and Design of Tall Buildings for Wind Loads
Mathematical Modelling in Civil Engineering
The Romanian, as well as other wind design codes for building structures, provides with limited degree of accuracy, the aerodynamic loads distribution on buildings up to 200 meters tall in an equivalent static approach (ESWL). For tall wind-sensitive building structures, especially for those with irregular shapes, most of the codes or standards recommend for design to use pressure data recorded in the wind tunnel. The ESWL approach is however used as reference estimation and structural first phase design. Advances on experimental and computational capabilities, led in the past decade to a significant development of time-domain analysis framework, both for seismic and wind loads. While the major outcome for earthquake engineering practitioners is to select appropriate design input ground motions at a particular site, the wind engineering practitioners are facing numerical difficulties to handle large wind loading durations, especially dealing with nonlinear-induced effects. The paper...
Implementation strategies for distributed modeling and simulation of building systems
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This paper describes implementation strategies for external coupling of distributed building system component models. This approach differs from the traditional way of developing software, where additional models are added by incorporating new modules in an existing program. This results in a simulation environment that is more flexible, practical, and powerful than the sum of the individual software programs. This paper presents the most recent results of an ongoing project that focuses on developments and implementation of the approach. The realization of the first prototype, i.e. the coupling mechanism, is discussed in detail. This paper concludes with a case study that highlights the necessity and potential of the approach.
2004
Earthquake engineers have traditionally investigated the behavior of structures with either computational simulations or physical experiments. Recently, a new hybrid approach has been proposed that allows tests to be decomposed into independent substructures that can be located at different test facilities, tested separately, and integrated via a computational simulation. We describe a grid-based architecture for performing such novel distributed hybrid computational/physical experiments. We discuss the requirements that underlie this extremely challenging application of grid technologies, describe our architecture and implementation, and discuss our experiences with the application of this architecture within an unprecedented earthquake engineering test that coupled large-scale physical experiments in Illinois and Colorado with a computational simulation. Our results point to the remarkable impacts that grid technologies can have on the practice of engineering, and also contribute to our understanding of how to build and deploy effective grid applications.