Numerical Smulation Of Three Dimensional Fracture Behavior Of Particile Reinfrced Composites

Since particle reinforced composites have many advantages in comparison withtraditional homogeneous materials, there are a lot of application prospects in industryfields. The cracks and defects in the composite may cause failure of the structureduring its sevice life. therefore, it is very important to investigate the fracture behaviorof particle reinforced composites.First, the J-integral was used to solve the stress intensity factors was introduced.The Finite Element model for 3D crack in a homogeneous solid was established by theABAQUS. Stress intensity factors was cauculated and compared with the results fromliteratures to verify the accuracy of the method.A three-dimensional finite element model for ZrB2-SiC composite material wasestablished. The influences of size, position and shape of particles on the stressintensity factors at crack front were investigated under mechanical loading.In the steady-state temperature conditions, the three-dimensional fracturebehavior of the particles reinforced composite material was studied. The influences oflocation, size, and shape of particles on stress intensity factor were discussed. Thesimilarities and differences between the mechanical and thermal loading are pointedout.