Finite element evoj nation of mode i stress intensity factor of composite material under domain loading

Abstract EN

In this paper, a Unite element method program under domain loading and plain strain conditions is developed and applied in equation of the stress intensity factor in opening modt; (Kj) in two dimensions crack problems.

Two types of crack problems analyzed and verified: first, cracked rotating disc mads from bi-directional fiber reinforced material composite, second crack blade mad* from bi-directional fiber reinforced meia! matrix composite.

It is found that the finite element method under domain loading is a good tool for the analysis of composite material.

The simulation is accurate in comparison with that obtained from extrapolation method.

The stress intensity factor for fiber reinforced metal matrix composite is larger when obtained from fifcsM'emforced material tinder same condom.