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PREDICTION OF LAMINATE FAILURE WITH THE ROTEM FAILURE CRITERION

1998; Elsevier BV; Volume: 58; Issue: 7 Linguagem: Inglês

10.1016/s0266-3538(96)00143-1

1879-1050

A. Rotem,

Mechanical Engineering and Vibrations Research

The mechanical behaviour of four types of composite material in various laminate lay-ups is examined by using the Rotem failure criterion. The criterion distinguishes between fibre failure and matrix failure. Only in-plane loads are considered, neglecting the possibility of interlaminar failure. Mainly the effect of biaxial loading is examined, including tension, compression and shear. Most of the cases of biaxial loading were predicted to fail by matrix failure. Only those cases where the load was unidirectional or almost unidirectional in the fibre direction causes fibre failure. The results of the predictions are given in graphs of failure envelopes. For some cases, stress/strain curves are shown.