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Lookup NU author(s): Dr Ahmed Qureshi
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Tolerancing decisions can profoundly impact the quality and cost of the mechanism. To evaluate the impact of tolerance on mechanism quality, designers need to simulate the influences of tolerances with respect to the functional requirements. This paper proposes a mathematical formulation of tolerance analysis which integrates the notion of quantifier: “For allacceptable deviations (deviations which are inside tolerances),there existsa gap configurationsuch asthe assembly requirements and the behavior constraints are verified” & “For allacceptable deviations (deviations which are inside tolerances), andfor alladmissible gap configurations, the assembly and functional requirements and the behavior constraints are verified”. The quantifiers provide a univocal expression of the condition corresponding to a geometrical product requirement. This opens a wide area for research in tolerance analysis. To solve the mechanical problem, an approach based on optimization is proposed. Monte Carlo simulation is implemented for the statistical analysis. The proposed approach is tested on an over-constrained mechanism.
Author(s): Qureshi AJ, Dantan J-Y, Sabri V, Beaucaire P, Gayton N
Publication type: Article
Publication status: Published
Journal: Computer Aided Design
Year: 2012
Volume: 44
Issue: 2
Pages: 132-142
Print publication date: 01/02/2012
ISSN (print): 0010-4485
ISSN (electronic): 1879-2685
Publisher: Pergamon
URL: http://dx.doi.org/10.1016/j.cad.2011.10.004
DOI: 10.1016/j.cad.2011.10.004
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