Fracture mechanics study on Subsurface Median Crack in Layered Structure Subjected to Mechanical Contact

摘要：

　　The subsurface transverse median crack system due to spherical contact in brittle coating-bond-substrate sandwich structure is investigated with an emphasis on stress intensity factor near the crack front using finite element method.This crack system emanates from the lower surface of the brittle layer and extends transversely towards the top of contact surface,resulting in ultimate failure of the structures.In this paper,finite element mesh is designed,and the crack front mesh designing solution for a surface crack subjected to remote tension is validated with Newman and Raju empirical equation.Then the proposed crack front mesh design solution is applied to a typical sandwich structure of various modeling parameters to obtain the SIF with 3D-J integral.

关键词： Fracture mechanics study Layered structure Subsurface transverse median crack Three dimensional (3D) J-integral Mechanical contact

作者: Yumei Bao Jun lv Yingjun Zhang Meifeng Xu Guozhong Chai

作者单位: Key Laboratory of E&M(Zhejiang University of Technology), Ministry of Education & Zhejiang Province, Key Laboratory of E&M(Zhejiang University of Technology), Ministry of Education & Zhejiang Province, Mutual Technology Institute of Chery Automobile Co.Ltd, Wuhu, Anhui, 241006,China

会议类型: 国际会议

会议名称: the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

会议地点: 台湾

会议语种:英文

页码: 3672-3676

在线出版日期: 2011-12-11（万方平台首次上网日期，不代表论文的发表时间）