计算物理 ›› 1997, Vol. 14 ›› Issue (S1): 635-637.

• 论文 • 上一篇    下一篇

弹性波散射问题的边界元解法

陈国荣1, 姜弘道1   

  1. 河海大学, 南京 210024
  • 收稿日期:1997-03-31 修回日期:1997-05-04 出版日期:1997-12-25 发布日期:1997-12-25

BOUNDARY ELEMENT METHOD FOR THE DIFFRACTION OF ELASTIC WAVE

Chen Guorong1, Jiang Hongdao1   

  1. Hehai University, Nanjing 210024
  • Received:1997-03-31 Revised:1997-05-04 Online:1997-12-25 Published:1997-12-25

摘要: 采用边界单元法求解弹性波对孔口的散射问题。给出了弹性波散射问题的边界积分方程,针对数值计算中出现的奇异积分,提出了一种改进的把动力基本解分解为正则部分和奇异部分分别计算的方法。最后讨论了P波和SV波对圆孔和椭圆孔的散射而引起的动应力集中。

关键词: 弹性波绕射, BEM, 奇异积分

Abstract: The diffraction of elastic wave is studied by using Boundary Element Method, and the formulation about elastic wave diffraction is given. For caculating singular integral, a improved numerical method which divides dynamic fundamental solution into singular part and regular part is proposed. Finally examples of P wave and SV wave scatter against circular hole and ellipse hole are discussed.

Key words: elastic wave, diffraction, BEM, singular integral

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