A geometric approach to tolerance analysis: Contribution to the robust design of flexible assemblies

DS 87-4 Proceedings of the 21st International Conference on Engineering Design (ICED 17) Vol 4: Design Methods and Tools, Vancouver, Canada, 21-25.08.2017

Year: 2017
Editor: Anja Maier, Stanko Škec, Harrison Kim, Michael Kokkolaras, Josef Oehmen, Georges Fadel, Filippo Salustri, Mike Van der Loos
Author: Schluer, Christoph; Gust, Peter; Mersch, Frank; Diepschlag, Falko; Sersch, Alina
Series: ICED
Institution: University of Wuppertal, Germany
Section: Design Methods and Tools
Page(s): 703-710
ISBN: 978-1-904670-92-6
ISSN: 2220-4342


Tolerance analysis is an important element for virtual product development. It makes it possible to record the effects of permissible deviations for the complex assemblies. The component deviations will only be represented by a significantly simplified structure in commercially available 3D tolerance analysis programs and elastic deformations in the components, as well as complex contact regions, can only be partially represented. The objective of this paper is therefore to present a geometric-based approach for tolerance analysis. This already represents the tolerance-related deviations for components in a 3D data set as realistic imperfections. The assertion, that the geometric imperfections have a significant impact, will be verified on the basis of a bolted articulated joint assembly. The numerical results will be subsequently validated experimentally. A test bench will be designed for this purpose and various test sequences with realistic bolted articulated joints will be examined. The results indicate the relevance of realistic consideration of tolerances in product engineering processes and therefore create an element for the robust design of flexible assemblies.

Keywords: Robust design, Computational design methods, Tolerance representation and management


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