基于有限单元法对动态应力强度因子进行数值计算的研究*

李旭东;张鹭;马渊;吴东流

振动与冲击 ›› 2011, Vol. 30 ›› Issue (1) : 223-226.

PDF(1077 KB)
PDF(1077 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (1) : 223-226.
论文

基于有限单元法对动态应力强度因子进行数值计算的研究*

  • 李旭东1; 张鹭1; 马渊2 ;吴东流1
作者信息 +

Study for numerical calculation of dynamic stress intensity factor based on thefinite element method

  • LI Xudong1; ZHANG Lu1; MA Yuan2; WU Dongliu1
Author information +
文章历史 +

摘要

运用ANSYS 商用有限元软件,采用非奇异单元和Newmark 积分算法,通过最小二乘法拟合,准确的获得了多个模型动态应力强度因子的解。所使用的方法适用范围广,这对于运用线弹性断裂动力学解决工程中的实际问题是有益的和必要的。



Abstract

Solutions of dynamic stress intensity factor of several models were obtained accurately, using
ANSYS commercial FEM software, adopting non-singular elements and the Newmark Integral Method, through
least square fitting. The method can be used widely for general purpose, which was beneficial and necessary for
using linear elastic fracture dynamic to solve practical engineering problems.

关键词

动态应力强度因子 / 有限单元法 / Newmark 积分 / 最小二乘法

Key words

dynamic stress intensity factor / the finite element method / Newmark integral / least square

引用本文

导出引用
李旭东;张鹭;马渊;吴东流. 基于有限单元法对动态应力强度因子进行数值计算的研究*[J]. 振动与冲击, 2011, 30(1): 223-226
LI Xudong;ZHANG Lu;MA Yuan;WU Dongliu. Study for numerical calculation of dynamic stress intensity factor based on thefinite element method[J]. Journal of Vibration and Shock, 2011, 30(1): 223-226

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