Tolerance is a major source of uncertainty and contributes significantly to the variation of dynamic responses, worsening the repeatability of assembled products. A systematic tolerance design strategy is required to control this kind of variation, and an approach for tolerance design based on robust design theory is proposed in this paper with a focus on the optimization of the dynamic response. The approach is based on Taguchi’s method, and performed by the following steps: (1) define the input and output parameters for the problem; (2) determine the effects of the control factors on the dynamic responses of interest; (3) identify factors to be adjusted and transform the problem into a multi-objective optimization. A benchmark tolerance design of a joint assembly of aero engine casings is used to verify the feasibility of the approach.
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The financial support of the National Natural Science Foundation of China (Project No. 51175244), Research Fund for the Doctoral Program of Higher Education of China (Project No. 20093218110008) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) are gratefully acknowledged. J. Yang also acknowledges the support of Fundamental Research Funds for the Central Universities of China and Funds of the Graduate Innovation Center in NUAA (Project No. kfjj120104).
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