汽车横梁内高压成形规律仿真分析  

Simulation Analysis on the Hydroforming Law of Beam in the Vehicle

作　　者：罗建斌[1] 吴量 苏海迪 苗明达 

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：《装备制造技术》2017年第8期82-85,共4页Equipment Manufacturing Technology

基　　金：广西教育厅2014年度高等学校科研项目(YB2014204);广西重点实验室建设项目(14-A-01-03);广西工学院博士基金项目(校科博13Z10);广西科技大学研究生教育创新计划项目(GKYC201702)

摘　　要：采用非线性有限元软件对汽车横梁开展弯管和内高压成形的多道次成形全过程数值模拟,并探讨了内高压成形过程中不同液压加载方式以及摩擦系数对成形构件壁厚分布的影响规律。仿真分析的结果表明:在内压力加载方式中,前期增长较缓慢,后期增长较迅速的折线加载方式下成形件的成形效果最好;在摩擦系数中,μ=0.125下成形质量最高。因此,选择合适的液压加载方式以及降低摩擦系数可在一定程度上提高成形件的成形质量。Using the nonlinear finite element software, the whole multi-forming process of beam bending and hydroforming in the vehicle has been simulated. The influece law of internal pressure loading way and friction coefficient on wall thickness distribution of the tube has also been explored. The simulation analysis result shows that the forming effect is the best under the internal pressure which is increased slowly firstly and is improved rapidly lastly.For the friction coefficient, the forming quality is the highest under μ = 0.125.So, in some extent, the forming quality can been enhanced by selecting the proper hydraulic loading method and reducing friction coefficient.

关 键 词：汽车横梁 管材内高压成形 液压加载路径 摩擦系数 仿真分析 

分 类 号：TG394[金属学及工艺—金属压力加工]