罩盖液压拉深成形的数值模拟分析  

Numerical simulation analysis on hydraulic drawing of cover

作　　者：顾勇[1,2] 吴小涛 袁鸿斌[1] 勾治践[1] 

机构地区：[1]杭州师范大学钱江学院,浙江杭州310036 [2]上海大学材料科学与工程学院,上海200072

出　　处：《锻压技术》2017年第11期47-50,共4页Forging & Stamping Technology

基　　金：2015年杭州市属高校产学对接特需专业(机制)建设项目(杭教育师[2015]7号)

摘　　要：板料液压成形是制造难成形件的一种有效方法。分析了罩盖液压拉深成形的工艺性,通过运用Dynaform板料成形软件,对罩盖零件的液压拉深成形过程进行了数值模拟,获得了成形后的零件成形极限图和变薄率分布图,并分析了其拉深成形过程。研究结果表明,采用初始设定的参数,罩盖在液压拉深过程中,最大变薄率约为18.27%,小于25%,成形效果良好,不容易破裂。采用模拟中使用的各成形条件,通过液压拉深实验能拉深出合格的成形零件,验证了模拟过程的正确性。Sheet hydro-forming is an effective method for manufacturing complicated parts. The manufacturability of hydraulic drawing of cover was analyzed, and the hydraulic drawing process of cover was simulated and analyzed by software Dynaform, and its FLD and thinning rate distribution were obtained. The results show that the maximum thinning rate of cover in the process of hydraulic drawing is about 18. 27% and less than 25% by adopting initial designed parameters, and the forming effect is excellent without crack. Thus, the qualified drawing parts are manufactured through hydraulic drawing experiment under the adopted condition in simulation, which verifies the correctness of simulation process.

关 键 词：罩盖 液压拉深 数值模拟 成形极限 最大变薄率 DYNAFORM 

分 类 号：TG386[金属学及工艺—金属压力加工]