The crack propagation behavior of Ti/TiC laminated composites was investigated based on the extended finite element method（XFEM）.The accuracy and effectiveness of the simulated results were verified by comparing with the existing experimental ones.The results show that Ti/TiC laminated composites exhibit layer by layer fracture characteristics

and the crack propagation is advanced in form of Z shape.In the crack propagation process

the crack propagation will be deflected

which increases the path of crack propagation and absorbs more amounts of the fracture energy

therefore the fracture toughness of the material is increased remarkably

and make the material with higher safety and stability.When the load reaches 336.7 N

the first crack initiation occurs at the Ti layer

and the maximum principal stress is 3 048.65 MPa

which leads to the absence of composites failure.The second crack of the material occurs at the TiC layer when the load value reaches 392.5 N

and the maximum principal stress reaches 4 557.54 MPa

which leads to the composites failure.