Quasi-Static Crack Propagation Modeling Using Shape-Free Hybrid Stress-Function Elements With Drilling Degrees Of Freedom
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS(2016)
摘要
A new plane shape-free multi-node singular hybrid stress-function (HS-F) element with drilling degrees of freedom, which can accurately capture the stress intensity factors at the crack tips, is developed. Then, a quasi-static 2D crack propagation modeling strategy is established by combination of the new singular element and a shape-free 4-node HS-F plane element with drilling degrees of freedom proposed recently. Only simple remeshing with an unstructured mesh is needed for each simulation step. Numerical results show that the proposed scheme is an effective and robust technique for dealing with the crack propagation problems.
更多查看译文
关键词
Finite element, hybrid stress-function element, drilling degrees of freedom, shape-free, crack propagation, simple remeshing
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络