锻压技术

基于Autoform-Sigma的汽车顶盖后横梁冲压工艺参数优化

英文标题：Process parameters optimization on rear cross beam of car roof panel based on Autoform-Sigma

作者：李英焦洪宇牛曙光

单位：常熟理工学院

分类号：TG385.2

出版年,卷(期):页码：2015,40(9):16-20

摘要：

以汽车顶盖后横梁为研究对象，利用Autoform软件对其进行冲压数值模拟。根据首次模拟结果选择开裂、起皱等缺陷位置附近的拉延筋系数及压边力为设计变量，利用Autoform-Sigma模块对其冲压工艺参数进行优化。经过123次迭代，当Sigma 优化收敛时，获得了最优模拟结果并确定了最优冲压工艺参数。最优模拟结果表明，原开裂区域未出现开裂或存在破裂风险，且变形不充分的区域大幅减小，同时主应变和减薄率等指标大幅度下降。按优化后的最优冲压工艺参数进行冲压成形试验，成形件未出现起皱、开裂缺陷，与数值模拟结果一致，验证了冲压工艺参数优化的正确性。

For the rear cross beam of car roof panel, the numerical simulation of its forming process was conducted by Autoform. Based on the results of the initial stimulation, blankholder force and drawbead coefficients nearby defects like fracture and wrinkle were chosen as the design variable, and then process parameters were optimized by Autoform-Sigma. When the optimization was convergent, the optimal result was obtained after 123 iterations and the optimal stamping process parameters were confirmed. The optimal result shows that defects like fracture and wrinkle do not appear in original fracture areas, and the areas of inadequate deformation decreases, as well as principal strain and thinning ratio declines drastically. Based on the above optimal process parameters, stamping tests were carried out, and productions were obtained without defects of wrinkle and crack, which are consistent with the numerical results, and the correctness of stamping process parameters optimization was verified sufficiently.

基金项目：

国家自然科学基金资助项目（61404012）；江苏省科技计划项目（BE2011096）

李英（1979-），女，硕士，讲师;通讯作者：焦洪宇（1981-），男，博士，讲师

参考文献：

［1］宫晓峰，于仁萍. 基于Autoform 汽车后围上盖板拉延成形模拟应用[J]. 锻压技术，2014，39(4):149-153.Gong X F，Yu R P. Application of drawing simulation for automobile reinforcement upper back based on Autoform[J]. Forging & Stamping Technology，2014，39(4):149-153.
［2］肖良红，罗慧娜，向俊仲，等.基于Autoform的轿车行李箱内板成形工艺优化[J].锻压技术，2014，39(6)：60-64.Xiao L H，Luo H N，Xiang J Z，et al. Forming process optimization for inner panel of car trunk lid based on Autoform[J]. Forging & Stamping Technology，2014，39(6)：60-64.
［3］田野，吕明达，黄余平. 汽车前门加强板冲压工艺参数优化[J].锻压技术， 2014，39(12):35-38.Tian Y，Lv M D，Huang Y P. Parameter optimization of stamping process on auto front door reinforcing plate[J].Forging & Stamping Technology, 2014，39(12):35-38.
［4］雷改丽. 基于Autoform 的汽车覆盖件正交试验有限元分析[J].热加工工艺，2011，40（15）：103-105.Lei G L. Simulation analysis on orthogonal experiment of automotive panel based on Autoform[J]. Hot Working Technology, 2011，40（15）：103-105.
［5］张骥超，刘罡，林忠钦，等.侧围外板冲压工艺稳健性优化设计[J]. 上海交通大学学报，2012，46(7)：1005-1010.Zhang J C，Liu G，Lin Z Q，et al. Robust optimization for an autobody outer panel stamping process[J].Journal of Shanghai Jiaotong University，2012，46(7)：1005-1010.
［6］龚志辉，兰质纯，周顺峰，等. 汽车覆盖件模具凸型面拉延方法[J]. 机械工程学报，2014，50（20）：129-135.Gong Z H， Lan Z C，Zhou S F，et al. Method on convex surface drawing for automobile panel[J]. Journal of Mechanical Engineering，2014，50（20）：129-135.
［7］傅旻，孔垂有，张勇. 汽车覆盖件成形中拉延筋的设计与数值模拟[J]. 机械设计与制造，2014，(2)：239-242.Fu M，Kong C Y，Zhang Y. Drawbead design and simulation of automobile panel forming[J]. Machinery Design ＆ Manufacture，2014，(2)：239-242.
［8］刘细芬，黄华艳，张洪锐. 基于CAE 技术的汽车覆盖件拉延模具设计[J].机械设计与制造，2010，(4)：242-244.Liu X F，Huang H Y，Zhang H R. Die design of drawing for the automobile panel based on CAE technology[J]. Machinery Design ＆ Manufacture，2010，(4)：242-244.
［9］庄蔚敏，曹德闯，叶辉. 基于连续介质损伤力学预测7075铝合金热冲压成形极限图[J]. 吉林大学学报，2014，44（2）： 409-414.Zhang W M，Cao D C，Ye H. Prediction of FLD for AA7075 under hot stamping based on continuum damage mechanics[J]. Journal of Jilin University，2014，44（2）：409-414.
［10］李奇涵，王文广，邓义，等. 基于数值模拟的油箱底壳拉延筋设置与优化[J].锻压技术，2014，39(12):31-34.Li Q H，Wang W G，Deng Y，et al. Design and optimization of drawbead of oil pan drawing based on numerical simulation[J].Forging & Stamping Technology, 2014，39(12):31-34.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】