首页 | 本学科首页   官方微博 | 高级检索  
     


Elastodynamic scattering by fluid-filled nonplanar cracks
Authors:Peter Olsson
Affiliation:(1) Division of Mechanics, Chalmers University of Technology, Göteborg, Sweden
Abstract:A recent modification of the null field approach is adapted to the study of scattering of elastic waves by fluid-filled nonplanar cracks. The fluid-filled crack is modeled as a surface over which friction-free boundary conditions apply. A closed surface is formed by adding a fictitious surface, on which latter surface boundary conditions of welded contact are applied. The surface fields on the closed surface are expanded in vector spherical harmonics in a manner which takes the edge conditions into account. Some numerical results on farfield quantities, such as scattering cross sections and backscattering amplitudes (both in the frequency and time domains), are presented for rotationally symmetric cracks.
Keywords:Crack  nonplanar  fluid filled  scattering  null field  NDE
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号