计算物理 ›› 1994, Vol. 11 ›› Issue (2): 167-171.

• 论文 • 上一篇    下一篇

动力边界元法中的强奇异积分问题

陈国荣   

  1. 河海大学工程力学系, 南京 210024
  • 收稿日期:1992-07-08 修回日期:1993-09-06 出版日期:1994-06-25 发布日期:1994-06-25

THE PROBLEM ABOUT HIGH ORDER SINGULAR INTEGRAL OF BOUNDARY ELEMENT METHOD FOR ELASTODYMMICS

Chen Guoroug   

  1. The mechanics Deparment of Hohai University, Nangjing 210024
  • Received:1992-07-08 Revised:1993-09-06 Online:1994-06-25 Published:1994-06-25

摘要: 本文讨论了动力边界元法中的奇异积分问题,对其中的强奇异积分提出了一个有效的计算方法.该方法从合非零初始态的边界积分方程出发,利用动力方程的特解间接地确定了主系数(即所谓强奇异积分),从而避免了直接计算强奇异积分的困难.根据该方法编制了计算程序,并给出了一个简单算例。

关键词: 弹性动力学, 边界单元法, 奇异积分

Abstract: The problem on singular integral of the Boundary Element Method for elastodynamics is studied, and a calculating method of the high order singular integral is presented.The method can indirectly find the singular integral by making use of the special solution of elastodynamic eguation. As a result, the difficulties for singular integral will be avoided. Finally a example is given, in the paper.

Key words: elastodynamics, Boundary Element Method (BEM), singular integral

中图分类号: