基于AutoForm的滑门内板的拉延成形数值模拟研究

Study onnumerical simulation of draw formingprocess for sliding door inner plate based on AutoForm

以汽车的滑门内板为研究对象,利用AutoForm软件对拉延工艺进行模拟分析。研究发现,零件在拉延成形后中间直角部位有拉裂风险,拉延深度较大的底面尖角部分有减薄率较大的风险,超出要求的最大减薄率。通过调整拉延参数和修改局部结构的方法使得零件的开裂风险消失,最大减薄率降到要求的范围内。对比实际零件生产发现与CAE模拟结果一致,验证了数值模拟的正确性。

Taking the sliding door inner plate of the automobile as the research obje〈q, the drawing process has been simulated and analyzed by use of AutoForm software. It is found out that crack risk of the part exists in middle right angle part after being drawn. Therisk of the greater Ihinning rate exists in greater drawing depth of sharp corners in hottom part, which exceeds the required maxinlum thinning rate.The cracking risk of parts has been disappeared and the maximum thinning rate has been reduted to the required range by adjusting the drawing parameters and modifying the local structure.It is compared that time actual parts production is consistent with CAE simulation results, which verifies the numerical simulation.