利用拓扑优化的结构微小损伤定位研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (4) : 25-29.

论文

利用拓扑优化的结构微小损伤定位研究

茅志颖 ; 陈国平; 张保强

作者信息 +

The tiny damage localization using topology optimization

Mao Zhi-ying; Chen Guo-ping; Zhang Bao-qiang

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文章历史 +

摘要

以结构模态参数主要是结构共振频率和结构某点的反共振频率为基础，结合拓扑优化中的渐进结构优化法，讨论了其在微小损伤结构的损伤定位中应用的可行性。文章中给出了结构共振频率和反共振频率的灵敏度，建立了损伤定位的数学模型，提出了针对微小损伤结构的损伤区域逼近方法，并结合进化法提出了合适的进行损伤定位的策略。最后针对本文所提的微小损伤结构，给出了算例进行验证。算例表明，渐进结构优化法在结构整个区域寻找损伤点，即使对于微小的损伤结构也可以有很好的搜寻效果

Abstract

The feasibility of using ESO for tiny damage localization with the modal parameters of resonant frequencies and anti-resonant frequencies was investigated in this paper. The sensitivity of anti-resonant frequency was afforded, the formulation for damage localization was built, the damage approximation method is given for the slightly damaged structures. The example demonstrated that based on the modal parameters, due to the character of topology optimization, the search performed globally over the entire structure for defects could find the location of the tiny damage exactly.

导出引用

茅志颖;陈国平;张保强 . 利用拓扑优化的结构微小损伤定位研究[J]. 振动与冲击, 2012, 31(4): 25-29

Mao Zhi-ying;Chen Guo-ping;Zhang Bao-qiang. The tiny damage localization using topology optimization[J]. Journal of Vibration and Shock, 2012, 31(4): 25-29