Concurrent design for nominal and tolerance analysis and allocation of mechanical assemblies using DE and NSGA-II

K. Sivakumar and C. Balamurugan

International Journal of Manufacturing Technology and Management, 2009, vol. 18, issue 1, 15-33

Abstract: Tolerance analysis of mechanical assemblies promotes concurrent engineering by bringing engineering requirement, manufacturing cost and quality together in a common model. To improve the tolerance design, the designer could first try to decrease the sensitive components by moving the nominal values to a less sensitivity portion. Second, the cost-based optimal machining tolerances are allocated. Differential Evolution (DE) and Non-dominated Sorting Genetic Algorithm (NSGA-II) are used for minimising the critical dimensions deviation and manufacturing cost with optimal machining tolerances. A numerical example (Stacked blocks assembly) shows the superior nature of DE and NSGA-II algorithms.

Keywords: critical dimensions deviations; tolerance allocation; tolerance analysis; sensitivity analysis; sensitivity optimisation; concurrent engineering; mechanical assemblies; machining tolerances; simultaneous engineering; tolerance design; differential evolution; genetic algorithms; manufacturing cost. (search for similar items in EconPapers)
Date: 2009
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