...
首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >On two hypersingular time-domain BEM for dynamic crack analysis in 2D anisotropic elastic solids
【24h】

On two hypersingular time-domain BEM for dynamic crack analysis in 2D anisotropic elastic solids

机译:关于二维各向异性弹性固体中动态裂纹分析的两个超奇异时域边界元法

获取原文
获取原文并翻译 | 示例
           

摘要

This paper presents a comparison of two hypersingular time-domain boundary element methods for transient dynamic crack analysis in two-dimensional, homogeneous, anisotropic and linear elastic solids. Stationary cracks in infinite and finite elastic solids of general anisotropy under impact loading are investigated. A combination of the classical displacement boundary integral equations and the hypersingular traction boundary integral equations is applied. Two different numerical solution procedures are developed to solve the time-domain boundary integral equations. The spatial discretization is performed by a Galerkin-method in both solution procedures. A collocation method is adopted for the temporal discretization in the first solution procedure, while a convolution quadrature is implemented for the temporal discretization in the second procedure. An explicit time-stepping scheme is developed to compute the unknown boundary data and the crack-opening-displacements. Numerical examples for the dynamic stress intensity factors are presented and discussed.
机译:本文对二维,均质,各向异性和线性弹性固体中瞬态动态裂纹分析的两种超奇异时域边界元方法进行了比较。研究了冲击载荷作用下,各向异性的无限大和有限弹性固体中的稳态裂纹。结合了经典位移边界积分方程和超奇异牵引边界积分方程。开发了两种不同的数值求解程序来求解时域边界积分方程。在两种求解过程中,均采用Galerkin方法进行空间离散。在第一个解过程中,对时间离散化采用搭配方法,而在第二个过程中,对时间离散化采用卷积求积法。开发了一种显式的时间步长方案来计算未知边界数据和裂纹张开位移。给出并讨论了动态应力强度因子的数值示例。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号