Damage Model and Failure Stress of Ceramic Particle Ni Base Alloy Composite

摘要：

　　For Ceramic particle Ni base alloy composite,experiments and damage evolution finite element analysis shows that arc-microcracks happen only at the interfaces between the particles and matrix,and then extend to the matrix.Composite strength is coincident with matrix failure.First,the three-phases model is used to determine the external strains of two-phases element.Then micromechanical stress field in the matrix is obtained.Based on the generalized thermodynamic force in damage process,the damage equivalent stress can be computed.As the damage equivalent stress is equal to the ultimate stress of the matrix,the failure stress of matrix in composites is given.

关键词： Three-phases model Damage Evolution Failure stress

作者: Zheng Jian Ni Xinhua Kang Jingxin

作者单位: Shijiazhuang Mechanical Engineering College,Shijiazhuang 050003,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1654-1656

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）