基于SAFE的层状结构导波传播特性研究

胡剑虹; 唐志峰; 吕福在; 姜晓勇

doi:10.6052/j.issn.1000-4750.2013.05.0457

基于SAFE的层状结构导波传播特性研究

1.
浙江大学现代制造工程研究所,杭州 310027;
2.
浙江大学数字技术及仪器研究所,杭州 310027;
3.
杭州浙达精益机电技术股份有限公司,杭州 311121

基金项目: 国家自然科学基金项目(51275454,61271084); 质检公益性行业科研专项项目(20140027)

详细信息

作者简介:
胡剑虹(1984―),男,浙江人,博士生,从事超声导波结构健康监测研究(E-mail:zjuhjh@126.com);吕福在(1968―),男,内蒙古人,副教授,博士,从事机电一体化研究(E-mail:lfzlfz@zju.edu.cn).

通讯作者:
唐志峰(1977―),男,湖南人,副教授,博士,从事智能检测与控制研究(E-mailtangzhifeng@zju.edu.cn).

中图分类号: O347.4+4
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出版历程
- 收稿日期: 2013-05-21
- 修回日期: 2013-12-08
- 刊出日期: 2014-11-24

RESEARCH OF GUIDED WAVES IN LAYERED STRUCTURES BASED ON SAFE

1.
Institute of Advanced Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China;
2.
Institute of Advanced Digital Technologies and Instrumentation, Zhejiang University, Hangzhou 310027, China;
3.
Hangzhou Zheda Jingyi Electromechanical Technology Corporation Limited, Hangzhou 311121, China

摘要

摘要: 针对传统SAFE算法在计算层状结构导波频散特性的缺点,提出了一种融合了Lamb波和SH波的力学特性的SAFE方法。该方法在SAFE基本原理基础上,结合Lamb波和SH波的力学表达式的特殊性,分别建立了Lamb波和SH波的SAFE模型。和先前的SAFE模型相比,实现了Lamb波和SH波的区分,降低了矩阵的阶次,提高了计算效率。利用建立的SAFE模型,计算了45#钢板各模态Lamb波和SH波的截止频率并和解析方法的结果进行对比,检验了SAFE模型的计算精度。分析了铝钛钢复合板和粘接铝复合板中Lamb波和SH波传播的算例,算例的计算结果对于研究层状结构中Lamb波和SH波的传播有借鉴意义。
- SAFE模型 /
- Lamb波 /
- SH波 /
- 层状结构 /
- 截止频率
Abstract: As previous SAFE models for layered structures have a weaknesses in the calculation of guided wave dispersions, an SAFE method combined with mechanical properties of Lamb waves and SH waves is studied. The SAFE model considers the characteristics of Lamb waves and SH waves based on an SAFE principle. Compared with previous SAFE models, the SAFE model can distinguish between Lamb waves and SH waves in layered structures. The SAFE model greatly reduces the matrix orders in calculation, which improves the computational efficiency. The cut-off frequencies of Lamb waves and SH waves in a 45# steel plate are calculated utilizing the SAFE model and compared with the analytic results, which examines the accuracy of an SAFE model. The examples of Lamb waves and SH waves propagating in an Al-Ti-Fe board and an Al-Epoxy-Al board are analyzed. The results can be a reference to research the propagation of Lamb waves and SH waves in layered structures.
- SAFE model /
- Lamb waves /
- SH waves /
- layered structures /
- cut-off frequencies

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参考文献(16)

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文章访问数: 243
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基于SAFE的层状结构导波传播特性研究

作者简介: 胡剑虹(1984―),男,浙江人,博士生,从事超声导波结构健康监测研究(E-mail:zjuhjh@126.com);吕福在(1968―),男,内蒙古人,副教授,博士,从事机电一体化研究(E-mail:lfzlfz@zju.edu.cn).

通讯作者: 唐志峰(1977―),男,湖南人,副教授,博士,从事智能检测与控制研究(E-mailtangzhifeng@zju.edu.cn).

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出版历程

RESEARCH OF GUIDED WAVES IN LAYERED STRUCTURES BASED ON SAFE

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出版历程

目录

作者简介:
胡剑虹(1984―),男,浙江人,博士生,从事超声导波结构健康监测研究(E-mail:zjuhjh@126.com);吕福在(1968―),男,内蒙古人,副教授,博士,从事机电一体化研究(E-mail:lfzlfz@zju.edu.cn).

通讯作者:
唐志峰(1977―),男,湖南人,副教授,博士,从事智能检测与控制研究(E-mailtangzhifeng@zju.edu.cn).