Sawtooth-shaped cohesion model, construction method and composite material damage simulation method

The invention provides a zigzag cohesion model, a construction method and a composite material damage simulation method, and aims to solve the problems of long time consumption, incompleteness and lowuniversality of composite material damage simulation in the prior art. According to the damage simulation method, based on a constructed zigzag cohesion model, a construction method of the cohesion model and a basic test standard part, a crack propagation experiment is carried out, and the cohesion rigidity of a bilinear cohesion model and an exponential cohesion model is calculated according toan experiment result. then fracture simulation experiments are carried out according to experiment results to calculate I-type fracture energy and II-type fracture energy and obtain III-type fractureenergy, cohesion strength under a corresponding fracture mode is calculated, a complete bilinear cohesion model is established, and finally, the complete zigzag cohesion model is obtained through analysis and conversion. Accord