SIMULATING 3D SURFACE CRACK BY FINITE ELEMENT TECHNIQUES BASED ON MARC

摘要：

Based on MSC Marc software,this paper realized the automatization of parameterization and modularized modeling.The modularized finite element modeling and contact techniques were adopted to simulate the semi-ellipse surface crack.Modeling methods include radial singular unit meshes in the crack front and boundary conditions of crack model by finite element contact technique.First the singular stress field of the crack front was simulated and the far field stress of the crack model was realized.Then according to the linear elastic finite element theories,the paper calculated the distribution of stress intensity factor on crack front curve,and fitted the crack front using orthogonal extension of the discrete nodes at crack front,thus the general frame of crack continual extending model is built.

关键词： contact technique singular unit surface crack MSC Marc

作者: S.X.Zhou J.L.Xie Q.F.Liu Y.Y.Xie

作者单位: Laboratory for Structural Strength Testing (Beijing Jiaotong University),China National Accreditatio Navy Logistic Tech.& Equipment Institute of PLA,Beijing 100072,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1494-1497

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）