Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, U.S.A.
Abstract:
The finite element method is applied to determine the generalized stress intensity factors for two problems fundamental in the micromechanical study of intergranular creep fracture. Special techniques to simulate multipoint constraints arising from symmetry and periodicity, and a singularity element have been developed and proved effective. The good agreements of finite element results with local field solutions are discussed.