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    Optimum tolerance synthesis of simple assemblies with nominal dimension selection using genetic algorithm

    Access Status
    Fulltext not available
    Authors
    Kumar, D.
    Ravindran, D.
    Kumar, M.
    Islam, Mohammad Nazrul
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Kumar, D. and Ravindran, D. and Kumar, M. and Islam, M.N. 2015. Optimum tolerance synthesis of simple assemblies with nominal dimension selection using genetic algorithm. Journal of Mechanical Engineering Science. 230 (19): pp. 3488–3508.
    Source Title
    Journal of Mechanical Engineering Science
    DOI
    10.1177/0954406215613366
    ISSN
    0022-2542
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/39872
    Collection
    • Curtin Research Publications
    Abstract

    Optimum tolerance allocation plays a vital role in minimization of the direct manufacturing cost, and it is sensitive to tolerances related to variations in manufacturing processes. However, optimal adjustment of both nominal dimensions and selection of tolerances may further reduce assembly manufacturing cost and wastage of materials during processing. Most studies in existing literature focus on optimum tolerance allocation for the assemblies without considering nominal dimension selection. The method proposed in this work uses genetic algorithm techniques to allocate tolerances to assembly components, thereby minimizing costs. The component alternate nominal dimensions are predicted based on critical dimensions and its tolerances. The effectiveness of the developed algorithms demonstrated using randomly generated problems as well as sample problems taken from the literature. Test results are compared with those obtained using the Lagrange multiplier method. It is shown that by adjusting the nominal dimensions, the proposed method yields considerable savings in manufacturing costs.

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