轿车发动机横梁内高压成形仿真研究  

Simulation Research on Hydroforming of the Engine Beam in Car

作　　者：罗建斌[1] 吴量 李健[1] 贾宇坤[1] 苏海迪 LUO Jianbin;WU Liang;LI Jian;JIA Yukun;SU Haidi(Guangxi Key Laboratory of Automobile Components and Vehicle Technology,Guangxi University of Science and Technology,Liuzhou Guangxi 545006,China)

机构地区：[1]广西科技大学广西车辆零部件与整车技术重点实验室,广西柳州545006

出　　处：《机床与液压》2018年第17期141-145,共5页Machine Tool & Hydraulics

基　　金：广西教育厅2014年度高等学校科研项目(YB2014204);广西工学院博士基金项目(院科博13Z10);广西重点实验室建设项目子课题(14-A-01-03);广西自然科学基金(2016JJA160119);广西科技大学研究生创新计划项目(GKYC201619)

摘　　要：与传统冲压焊接工艺相比,管件内高压成形工艺具有成形精度高、质量轻、材料省等优点。因此,管件内高压成形技术成为从制造工艺上降低车身质量的主要途径之一。利用自制设备对简单管件进行内高压成形实验,并借助有限元软件对其成形全过程进行数值模拟,通过实验验证仿真结果的正确性和可靠性。基于此,对发动机横梁内高压成形过程进行仿真分析,主要研究摩擦因数、轴向补料路径对成形质量的影响规律。仿真结果表明:减小摩擦因数可有效降低发动机横梁壁厚减薄程度,轴向补料路径对其厚度分布影响较为明显。Compared with conventional stamping and welding process,tube hydroforming technology has some advantages such as higher precision,weight reduced,material economized and so on.So tube hydroforming technology has become one of the main ways to reduce vehicle body weight from the manufacturing process.The home?made equipment was used to carry out simple tube hydroforming experiment.The numerical simulation of the entire process was also conducted by the finite element software.The correctness and dependability of the simulation result were verified by test.Based on it,the hydroforming process of car engine beam was analyzed by simulation method.The influences of friction coefficient and axial feeding path on the forming quality were studied.The simulation results show that decreasing the friction coefficient can effectively reduce wall thinning of the engine beam,while the axial feeding path has an obvious impact on the thickness distribution.

关 键 词：发动机横梁 管件内高压成形 摩擦因数 轴向补料路径 仿真研究 

分 类 号：TG394[金属学及工艺—金属压力加工]