考虑多点保形的结构拓扑优化设计方法
收稿日期: 2014-03-12
修回日期: 2014-03-31
网络出版日期: 2014-04-09
基金资助
国家自然科学基金(51275424,11002113,11172236);国家"973"计划(2011CB610304);西北工业大学基础研究基金(NPU-FFR-JC20120229)
Structure topology optimization with multi-point shape-preserving constraint
Received date: 2014-03-12
Revised date: 2014-03-31
Online published: 2014-04-09
Supported by
National Natural Science Foundation of China (51275424, 11002113, 11172236); National Basic Research Program of China (2011CB610304); Northwestern Polytechnical University Fund of Fundamental Research (NPU-FFR-JC20120229)
朱继宏 , 李昱 , 张卫红 , 侯杰 . 考虑多点保形的结构拓扑优化设计方法[J]. 航空学报, 2015 , 36(2) : 518 -526 . DOI: 10.7527/S1000-6893.2014.0035
The purpose of this paper is to present an extended topology optimization suppressing the warping deformation of multiple control points in aircraft structural local domain. By applying artificial week elements (AWE) established with respect to the control points of shape-preserving design, the elastic warping deformation is quantified and suppressed by constraining the strain energies of AWE. Moreover, further studies on the paradox between shape-preserving constraint and global strain energy, probable distortion of load carrying path during topology optimization are carried out for in-depth understanding. Comparisons of several numerical results with the standard topology optimization have evidently shown that the effect of shape-preserving is successfully achieved by suppressing the warping deformation and controlling the relative displacements of multiple control points.
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