Optimization of process parameters of stamping forming of the automotive lower floor board

There are many process parameters which have great effect on the forming quality of parts during automobile panel stamping forming process. this paper took automotive lower floor board as the research object; the forming process was analyzed by finite element simulation using dyna form. the influences of four main process parameters including bhf(blank holder force),die corner radius,friction coefficient,and die clearance on the maximum thinning rate and the maximum thickening rate were researched based on orthogonal experiment. the results show that the influences of each value of various factors on the target are not identical. on this basis,the optimization of the four parameters was carried out,and the high quality product was obtained and the maximum thinning rate and maximum thickening rate were effectively controlled. the results also show that the simulation analysis provides the basis for the optimization of the forming process parameters,and it can greatly shorten the die manufacturing cycles,reduce the production costs,and improve the production efficiency. copyright © 2014 g. ma and b. huang.