Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 9 No. 2 June 1999|
（Opening Lab of Mechanics, Central South University of Technology,Changsha 410083, P. R. China）
Abstract:Crack closure in brittle materials subjected to compressive-shear loading is studied to gain insight into compressive-shear failure mechanism. An analytical wing crack model for the stress intensity factors is developed in the light of superimposition principle. The model can be successfully used to predict out-of-plane initiation and extension. Comparison shows that theKⅠvalues at wing crack tips obtained by the present method agree well with the exact solution proposed by Horii and Nemat-Nasser. The comparison with other approximate model is also given.
Key words: crack closure compressive-shear loading stress intensity factor