刚架与板组合结构动力学形状优化研究  

A Study on Dynamic Shape Optimization of Beam-plate Structure

作　　者：吴克恭[1] 闫云聚[1] 姜节胜[1] 

机构地区：[1]西北工业大学振动工程研究所,西安710072

出　　处：《机械科学与技术》2000年第z1期63-65,共3页Mechanical Science and Technology for Aerospace Engineering

基　　金：航空科学基金资助项目(97B53008)

摘　　要：针对刚架与板组合结构动力学形状优化问题，提出一套联合运用序列二次规划 法、ＢＦＧＳ变尺度法及二次插值技术（一维搜索），将约束优化问题转化为无约束序 列优化问题，得到了满意的结果。算例表明本文所述方法对刚架与板组合结构的有 效性，显示了算法的工程实用性，并能够推广到其它复杂结构的动力学形状优化问 题中去。Using Sequential Quadratic Programming method, BFGS variable metric method and quadratic interpolation method, the dynamic shape optimization of beam-plate structure has been studied. This method transfers the constrained optimization problems into unconstrained optimization problems so that it provides a practical dynamic shape optimization method in engineering. Figurel and Figure2 show the original structure and optimum design respectively. Numerical examples have showed that this method can modify the structure's dynamic characters effectively and can provide an alternative better original structure for designers. The proposed shape optimization method can also be extended to the field of other optimization problem and other more complex structures in principle.

关 键 词：形状优化 动力学 优化设计 刚架与板组合结构 

分 类 号：TU311．3[建筑科学—结构工程]