Concurrent design for nominal and tolerance analysis and allocation of mechanical assemblies using DE and NSGA-II
by K. Sivakumar, C. Balamurugan
International Journal of Manufacturing Technology and Management (IJMTM), Vol. 18, No. 1, 2009

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.

Online publication date: Sun, 12-Apr-2009

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