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AN APPROACH FOR THE INCLUSION OF LOADING CONDITIONS IN A POLYHEDRAL-BASED METHOD FOR EARLY VARIATION MANAGEMENT

Published online by Cambridge University Press:  19 June 2023

Carlos Andres Restrepo Garcia*
Affiliation:
University of Bordeaux; Paris-Saclay University
Denis Teissandier
Affiliation:
University of Bordeaux;
Nabil Anwer
Affiliation:
Paris-Saclay University
Yann Ledoux
Affiliation:
University of Bordeaux;
Vincent Delos
Affiliation:
University of Bordeaux;
Laurent Pierre
Affiliation:
Paris-Saclay University
Sonia Carolina Garcia Gomez
Affiliation:
University of Bordeaux;
*
Restrepo Garcia, Carlos Andres, University of Bordeaux, France, carlos.restrepo@u-bordeaux.fr

Abstract

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The variation management and product quality processes are important tasks to guarantee the assemblability of the systems, the scrap reduction and to avoid delays on production and launching. The compound of activities in Geometric Dimensioning and Tolerancing (GD&T) are necessary, especially in the early design stages, to take into account variations of different nature and from different sources. In this paper, an approach for considering the loading conditions in a polyhedral-based approach in tolerancing design is presented. The load boundary conditions are represented as additional displacement restrictions in the deviation space. The restrictions imposed by the physical limits of a system, the ones coming from the loading conditions and the degrees of freedom (DoF) can be all described and represented with a single polyhedron operand. The approach is illustrated using a simplified 2-D model for both ideal and non-ideal geometry. A 3-D model describing an unilateral contact is presented as a case study using Skin Model Shapes. By taking into account geometrical form defects, external loads, and the kinematics of the system, its sensitivity to variations can be reduced even from early design stages.

Type
Article
Creative Commons
Creative Common License - CCCreative Common License - BYCreative Common License - NCCreative Common License - ND
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.
Copyright
The Author(s), 2023. Published by Cambridge University Press

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