The Fined COD Transform Formulas of Bending-Type Specimens for Material Fracture Toughness Testing
Based on the refined results of the relationships between crack opening displacement (COD) along load line and crack mouth opening displacement (CMOD) by finite element analysis (FEA),the effects of material properties and plastic deformation at the crack tip of a single-edged bending (SEB) specimen and a front-force compact tension (FFCT) specimen on the relationships between COD and CMOD of the two bending specimen types have been analyzed.The results show that the plasticity influences are existing but ignorable.More simplified and accurate COD transform formulas used for plastic work calculation of J integral for the SEB and FFCT specimens are proposed.The error analysis results show that the two formulas given are very close to the fined FEA results.
Single-edged bending Front-force compact tension Finite element analysis crack opening displacement,COD transformation
Yao Yao Li-xun CAI Chen BAO
Department of applied mechanics and engineering,southwest jiaotong university Chengdu,China
国际会议
西安
英文
1-5
2012-10-01（万方平台首次上网日期，不代表论文的发表时间）