3D finite element analysis of multiple transverse cracking in hybrid cross-ply composite laminates

This paper presents the analysis of multiple transverse cracking in hybrid composite laminates subjected to uniaxial loading. The 3D finite element me thod has been used for evaluating the strain energy release rates and stiff ness reductions in different glass/epoxy and graphite/epoxy hybrid cross-pl y composite laminates as the transverse crack extends in the width directio n. The procedure is based on the computation of strain energy in the lamina tes with a simulated crack and its extension for incremental applied strain s. Results are presented for various combinations of crack lengths and crac k densities.