摘要
分析了非局部损伤模型在模拟损伤发展中的特性,介绍了在非局部损伤模型中计算非局部等价应变时光滑权函数的特点及选取原则。通过算例表明,采用B-Spline权函数和Gauss权函数的非局部模型可以较好的避免有限元实现时,计算结果的对网格的依赖性和零能量消耗问题。
The characteristic of the nonlocal damage model when it is used to simulate the development of damage is studied. The smooth weight function is used to describe＇the nonlocal equivalent strain instead of the piecewise uniform weighting which has been implicitly assumed in the classical nonlocal model. The results of an example indicate that the nonlocal model with the B-Spline or Gauss weight function can overcome the problems of both energy and mesh dependence.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第9期1178-1181,共4页
Journal of Hefei University of Technology：Natural Science
