TY  - EJOU
AU  - So, W.M.G.. 
AU  - Lau, K.J. 
AU  - Ng, S.W. 

TI  - Determination of Stress Intensity Factors for Interfacial Cracks Using the Virtual Crack Extension Approach
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2004
VL  - 5
IS  - 3
SN  - 1526-1506

AB  - A new finite element analysis procedure is implemented for the determination of complex stress intensity factors in interfacial cracks. Only nodal displacements and strain energies of the near-crack-tip elements are involved in this procedure so that element stiffness matrices need not be made available. The method is first tested using a closed form solution for infinite media to obtain a suitable finite element mesh. It is then applied to finite plates and four-point bending specimens containing interfacial cracks. In cases where reference values are available for comparison, good agreement of results can be obtained with relatively coarse element meshes.
KW  - Fracture
KW  -  interfacial
KW  -  cracks
KW  -  stiffness derivative

DO  - 10.3970/cmes.2004.005.189