QP980超高强钢翻边性能分析

Analysis of flange performance of QP980 ultra-high-strength steel

为满足汽车轻量化需求,以QP980超高强钢为原材料所制车门防撞杆为研究对象,通过仿真和试验分析,对QP980超高强钢车门防撞杆翻边性能进行研究。首先,在UG软件中设计车门防撞杆翻边成形方案;然后,通过经验公式,初步确定成形参数,采用Auto Form软件进行成形仿真,得到最大减薄率和回弹量;接着,分析车门防撞杆翻边成形,并利用响应面法对成形参数进行优化设计;最后,设计翻边成形的试验流程,对仿真分析的结果展开试验验证。结果表明,QP980超高强钢在进行翻边成形时,具有比普通高强钢更好的防破裂能力,回弹缺陷能够通过优化参数得到较好的控制。

To meet the lightweight demand of automobiles,the door anti-collision beam made of QP980 ultra-high-strength steel was taken as the research object.Through simulation and experimental analysis,the flange performance of QP980 ultra-high-strength steel door anticollision beam was studied.Firstly,the flanging forming scheme of the door anti-collision beam was designed in the UG software.Then,the forming parameters were preliminarily determined by the empirical formula,and the forming simulation was performed by AutoForm software to obtain the maximum thinning rate and springback amount.Then,the flanging forming of door anti-collision beam was analyzed,and the forming parameters were optimized by the response surface method.Finally,the test process of the flanging forming was designed,and the results of the simulation analysis were tested and verified.The results show that QP980 ultra-high-strength steel has better anti-breaking ability than ordinary high-strength steel during flanging forming,and the springback can be better controlled by optimizing parameters.