PLANE STRESS DYNAMIC FIELDS NEAR A PROPAGATING CRACK-TIP IN A POWER-LAW MATERIAL

作     者：Zhang Zimao Gao Yuchen Harbin Shipbuilding Engineering Institute, Harbin. China Now at Department of Mechanics, Harbin Institute of Technology, Harbin, China. 

作者机构：Harbin Shipbuilding Engineering Institute Harbon China 

出 版 物：《Acta Mechanica Sinica》 (力学学报(英文版))

年 卷 期：1988年第4卷第1期

页      面：22-34页

基　　金：Projects sponsored by the National Science Foundation 

主　　题：power-law material strain singularity singularity-factor elastic region plasticregion. 

摘      要：Based on the plastic-dynamic equations, the asymptotic behaviour of the near-tip fieldsfor a plane stress tensile crack propagating in a power-law material has been studied in this paper, It isshown that the stress and strain singularities are, respectively, of the order (In A/r)~(1/(n-1)) and(In A/r)~(n/(n-1)).where A is a constant which is related to the size of plastic region, r is the distance to the crack tip, n isthe power-law exponent.