Multi-parameter optimization of forging die structure for hinge beam of large cavity hexahedral top diamond press
The forging process of hinge beam which is the key part of large cavity hexahedral top diamond press was studied.In order to improve the service life of the hinge beam forging die,the final forging process was simulated by Deform-3D software,and the die struc-ture parameters were optimized.First of all,the die stress was taken as the optimization object,and seven structural parameters at the die corners and fillets were selected as design variables.The variables with significant influence on die stress were selected by Plackett-Bur-man Design(PBD),which were studied as the final optimization variables.The response surface regression model was established by u-sing Box-Behnken Design(BBD)sampling.On the premise that the fitting model was effective,the particle swarm optimization algorithm was improved by introducing dynamic inertia weight and learning factor,and the optimal die structure parameters were obtained by its opti-mization.The reliability of the results was verified by finite element simulation.The results show that through the multi-parameter optimi-zation of the die structure,the die stress is reduced by 25%,and the service life of the die is significantly improved.
hexahedral top diamond presshinge beamforgingforging diemulti-parameter optimization
万方数据
维普
