EI、Scopus 收录
中文核心期刊
Jianhua Rong, Xiaojuan Xing, Guo Deng. A structural topological optimization method with variable displacement constraint limits[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 431-439. doi: 10.6052/0459-1879-2009-3-2007-418
Citation: Jianhua Rong, Xiaojuan Xing, Guo Deng. A structural topological optimization method with variable displacement constraint limits[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(3): 431-439. doi: 10.6052/0459-1879-2009-3-2007-418

A structural topological optimization method with variable displacement constraint limits

doi: 10.6052/0459-1879-2009-3-2007-418
  • Received Date: 2007-08-30
  • Rev Recd Date: 2008-04-23
  • Publish Date: 2009-05-18
  • In each sub-loop solving of the ICM (Independent,Continuous and Mapping) method, whether in what quantities do topologydesign variables change, structural displacements etc. characteristicquantities and their derivatives are approximately obtained by using theirvalues at the beginning of the sub-loop iterations. This measurement maylead to large errors of the mentioned quantity estimations. If there is onlya type of constraints (such as displacement constraints) in an optimizationmodel, the errors may be larger. In order to deal with this problem, for thestructural topological optimization problem with the objective functionbeing the structural weight and only displacement constraints, this paperproposes a new structural topological optimization method, being based onthe ideas of the ICM method (Independent, Continuous and Mapping) and theevolutionary structural optimization method. New displacement constraintlimits are formed and introduced to the optimization model at the beginningstep of each sub-loop iterations to control variations of topological designvariables. Moreover, the element deletion and adding criterion and a set ofstructural optimization strategy are given. Some elements with artificialmaterial property are inserted around the cavities and boundaries of thestructure optimized so that the structure optimized is a non singularstructure and the proposed method is of an element restorable function. Anda structural characteristics mapping transformation relation between theeffective structure and the structural maximum design domain is built.Incorporating the dual programming method, a new continuum structuraltopological optimization method is proposed. The several examples show thatthere is not any objective oscillation phenomenon in optimizationiterations, and the proposed method is of validity and effectiveness.

     

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1948) PDF downloads(686) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return