铝制易拉罐罐身成形有限元模拟  

Finite element simulation of aluminum can body forming

作　　者：胡晓 杨兵[1,2] 何海铜 HU Xiao;YANG Bing;HE Hai-tong(Baowu Aluminum Technical Center,Baosteel Central Research Institute,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201999,China;Sanmenxia Aluminum-Based New Material R&D Center,China Baowu Steel Group,Sanmenxia 472000,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院宝武铝业技术中心,上海201999 [2]中国宝武三门峡铝基新材料研发中心,河南三门峡472000

出　　处：《塑性工程学报》2021年第8期49-54,共6页Journal of Plasticity Engineering

摘　　要：以铝制易拉罐罐身成形过程为研究对象,在考虑材料三向应力的基础上,采用各向同性体单元进行变形体的离散处理,利用Ls-dyna模拟计算平台建立了相应的全工序有限元模型,对成形过程中铝制易拉罐罐身的壁厚变化进行了模拟分析,并基于罐身成形试验壁厚分布结果进行了模型模拟精度的验证。同时,基于此三向应力模型研究了模具表面摩擦系数对铝制易拉罐罐身成形的影响规律。结果表明:基于该模型模拟得到的罐身壁厚分布规律与实际测量结果相符;较高的冲头摩擦系数以及较低的减薄拉深模具摩擦系数有利于减少罐身成形开裂的发生,从而提高易拉罐罐身的生产效率。Taking the forming process of aluminum can body as the research object,considering the triaxial stress of the material,the deformed body was discretized by the isotropic volume element.The whole process finite element model was established based on Ls-dyna simulation computing platform to simulae the wall thickness change of aluminum can body during forming.The simulation accuracy of the model was verified based on the wall thickness distribution result of the can body forming test.At the same time,based on the triaxial stress model,the influence law of mold surface friction coefficient on the aluminum can body forming was studied.The results show that the distribution law of wall thickness of can body simulated by this model is consistent with the actual measurement result.Higher friction coefficient of punch and lower friction coefficient of ironing mould can reduce the occurrence of crack of can body forming and improve the productivity of can body.

关 键 词：铝制易拉罐 成形模拟 壁厚 摩擦 

分 类 号：TG386.3[金属学及工艺—金属压力加工]