利用ＬＳ－ＤＹＮＡ３Ｄ软件包对ＣＡ４８８发动机油底壳的一次拉延成形过程进行了有限元模拟。得出了利用０８Ａｌ材料一次拉延成形油底壳时出现的主要质量问题的产生机理和影响因素。利用ＥＵＣＬＩＤ软件及数值模拟的方法对冲压工艺和模具结构进行了调整，获得了具体的改进方案，为优化冲压工艺和模具设计以及缩短模具调整周期提供了理论依据。 The LS-DYNA3D package was used to simulate the one-time drawing process of CA488 engine oil pan. The production mechanism and influential factors of the main quality problems that occurred when using 08Al material to draw and shape the oil pan at one time were obtained. EUCLID software and numerical simulation methods were used to adjust the stamping process and mold structure, and specific improvements were obtained. This provides a theoretical basis for optimizing stamping process and mold design and shortening the cycle of mold adjustment.