Analytical analysis of vibration isolation of open trench under plane elastic wave incidence

被引：0
|
作者：
Zhou F. [1 ,2 ]
Liang Y. [1 ]
Liu Y. [1 ,2 ]
机构：
[1] School of Civil Engineering, Lanzhou University of Technology, Lanzhou
[2] Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 09期
关键词：
analytic solution; complex variable function; conformal mapping; open trench; wave function expansion;
D O I：
10.13465/j.cnki.jvs.2023.09.034
中图分类号：
学科分类号：
摘要：
Here, based on complex variable function theory and conformal mapping method, wave function expansion method and multi-level coordinate transformation technique were used to solve vibration isolation problem of open trench in semi-infinite space against plane SH wave and plane P wave. Firstly, scattering fields of plane SH wave and plane P wave incident into semi-infinite space were given with the virtual source method and the large arc assumption method,respectively. Then,infinite order linear equations were established under stress free boundary conditions at open trench boundary and large arc boundary,and analytical solutions of scatterings of open trench to plane SH wave and plane P wave were obtained by solving these linear equations. Finally, effects of excitation frequency, trench depth and other factors on vibration isolation effect were parametrically analyzed. The results showed that vibration isolation effects of open trench on plane SH wave and plane P wave increase with increase in incident wave frequency and open trench depth. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：293 / 303
页数：10
相关论文
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