NUMERICAL SIMULATION OF CRACK DRIVING IN HETEROGENEOUS MATERIAL COMPONENTS

摘要：

The inhomogeneous mechanical property of welded joint with longitudinal crack is analyzed and the effect of strength matching and weld width on Improved J-integral (IJ-integral) is studied.The crack driving force in the bi-material is analyzed and the variations of IJ-integral with the bi-material parameters and the distance between crack and interface are studied.The results indicate that the crack driving force in harder medium is less than that in softer medium.The crack driving force of the crack far from the interface is higher than that close to the interface.When the crack is far from the interface,the material property of the other side has no influence on the driving force.When the crack is close to the interface,the crack driving force in harder medium will be increased and that in softer medium decreased.

关键词： Heterogeneous component Crack driving Finite element IJ-integral

作者: Zhi-ming Qu Chang-long Wang Li-bo Liu

作者单位: School of Civil Engineering,Hebei University of Engineering,Handan,Hebei 056038,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: 1535-1540

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）