Prediction of Sheet Stamping Fracture Based on Ductile Fracture Criterion
In order to predict whether the sheet metal is cracked and the location of the crack,the SS316L stainless steel sheet samples were subjected to uniaxial tensile test on the universal material testing machine.The real stress-strain curve was obtained according to the volume invariable principle,and the performance parameters of SS316L stainless steel were obtained by using the Origin fitting curve.A VUMAT subroutine based on Hill'48-Normalized Cockcroft & Latham damage and fracture model was written and imported into Abaqus for secondary development.Based on the simulation and experiment,the Hill'48-Normal-ized Cockcroft & Latham damage and fracture model can accurately predict the fracture location and whether the plate is broken.Therefore,the Hill'48-Normalized Cockcroft & Latham damage and fracture model can guide the design of stamping process and be helpful for the prediction of actual stamping failure.
Hill'48-Normalized Cockcroft & Latham Damage Fracture ModelSheet Metal StampingVUMAT SubroutineFinite Element SimulationSS316L
万方数据
维普
