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复合材料层合板结构振动声辐射优化

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2008-12-25

Journal: 振动与冲击

Included Journals: CSCD、ISTIC、PKU、EI、Scopus

Volume: 27

Issue: 12

Page Number: 31-35

ISSN: 1000-3835

Key Words: 有限元;层合板;声辐射;优化;灵敏度

Abstract: 通过有限元法计算复合材料层合板结构的振动特性,然后采用瑞利积分进行结构的声辐射分析.在此基础上,给出考虑振动声辐射特性的复合材料层合板的优化设计模型,研究简谐激励力下的结构灵敏度计算,重点推导了声学灵敏度分析公式,并采用序列线性规划方法进行了优化求解.数值算例表明通过层合板铺层厚度和角度的优化可以有效降低结构的振动声辐射,同时验证了灵敏度算法的精度和优化方法的有效性.

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