高强度U型槽钢链模成形有限元仿真分析

Chain-die forming is stable to meet the forming of advanced high strength steel with high performance fluctuation in the complex conditions. Based on the software ABAQUS, a finite element model of the chain-die forming for U-profiled advanced high strength steel (AHSS) product was established respectively with isotropic hardening model and linear kinematic hardening model. The longitudinal strain at the flange edge of blank in the chain-die forming process of U-profiled AHSS product was discussed,the reliability of finite element model was demonstrated by comparing the experimental and simulated results,and the effect of the two constitutive models on simulation results was also compared for further analysis of the chain-die forming progress. Based on the validated simulation model, the influences of friction and yield strength on the longitudinal strain were discussed in numerical test method. The results show that there is little effect of the yield strength of blank on the longitudinal peak strain and the friction condition also has little effect on the longitudinal strain