On Experimental Method of Forming Limit Prediction Based on 304 Stainless Steel
The experimental methods commonly used to obtain the forming limit curve are electrocorrosive grid at-tachment method and paint spraying speckle attachment method,but the difference between the forming limit curves in the forming limit prediction obtained by these two methods is not clear.In the electric corrosion grid at-tachment method,two different data processing methods,Hecker method and GMAS software,are used to ob-tain the forming limit curve,which is obtained by T-D method based on DIC technology in speckle attachment method of paint spraying.The obtained forming limit curve is introduced into Dynaform finite element simulation as a rupture criterion to predict the thinning rate of plate rupture,and to compare with the experimental results.The results show that the forming limit curves obtained by different experimental methods have some differences in the prediction of thinning rate of 304 stainless steel plate.When the plate width is small,the prediction of speckle curve is closer to the actual situation,and when the plate width increases gradually close to the length of the plate,the fracture prediction of the GMAS curve is closer to the actual situation.
万方数据
维普
