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Semantic Operators for Handling Shape Sub-Domains in FE Model Preparation

[+] Author Affiliations
Rosalinda Ferrandes, Jean-Claude Léon

G-Scop Laboratory, Grenoble, France

Franca Giannini, Bianca Falcidieno

IMATI-CNR Genova, Genova, Italy

Phillipe Marin

3S-R Laboratory, Grenoble, France

Paper No. DETC2007-35255, pp. 223-232; 10 pages
doi:10.1115/DETC2007-35255
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 27th Computers and Information in Engineering Conference, Parts A and B
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4803-5 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME

abstract

The evaluation of the mechanical behaviour of a product through a FE simulation requires an adaptation of the shape represented in its CAD model. During this shape modification process, several shape sub-domains are removed to simplify the subsequent mesh generation and FE solving tasks. The removal of a shape sub-domain is always driven by a specific mechanical criterion. In the proposed approach, the preparation of the simulation model takes place in a software environment based on a mixed geometric representation, which considers as reference polyhedral models but enables to keep the semantics of the input CAD models. We developed efficient complex operators for handling shape sub-domains by combining basic operators acting on the polyhedral model with different kinds of mechanical criteria and semantic information. These operators enable to respect user’s purposes and hypotheses as well as the specifications of the targeted mechanical problem. In this paper, we illustrate the various aspects and information involved in their definition and use.

Copyright © 2007 by ASME

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