基于Autoform-Sigma的汽车顶盖后横梁冲压工艺参数优化
发布时间：2018-12-15 00:02
【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。
[Abstract]:Taking the rear beam of automobile roof as the research object, the stamping numerical simulation was carried out by using Autoform software. According to the results of the first simulation, the parameters of stamping process were optimized by Autoform-Sigma module, which were selected as design variables, such as the coefficient of drawing bar and the blank holding force near the location of crack and wrinkle. After 123 iterations, when Sigma converges, the optimal simulation results are obtained and the optimal stamping process parameters are determined. The optimal simulation results show that there is no cracking or risk of cracking in the original cracking area, and the area with insufficient deformation is greatly reduced, while the main strain and thinning rate are greatly reduced. According to the optimized stamping process parameters, the stamping test results show that the forming parts do not appear wrinkling and cracking defects, which is consistent with the numerical simulation results, and verifies the correctness of the stamping process parameters optimization.
【作者单位】： 常熟理工学院机械工程学院;
【基金】：国家自然科学基金资助项目(61404012) 江苏省科技计划项目(BE2011096)
【分类号】：U466;TG386
[Abstract]:Taking the rear beam of automobile roof as the research object, the stamping numerical simulation was carried out by using Autoform software. According to the results of the first simulation, the parameters of stamping process were optimized by Autoform-Sigma module, which were selected as design variables, such as the coefficient of drawing bar and the blank holding force near the location of crack and wrinkle. After 123 iterations, when Sigma converges, the optimal simulation results are obtained and the optimal stamping process parameters are determined. The optimal simulation results show that there is no cracking or risk of cracking in the original cracking area, and the area with insufficient deformation is greatly reduced, while the main strain and thinning rate are greatly reduced. According to the optimized stamping process parameters, the stamping test results show that the forming parts do not appear wrinkling and cracking defects, which is consistent with the numerical simulation results, and verifies the correctness of the stamping process parameters optimization.
【作者单位】： 常熟理工学院机械工程学院;
【基金】：国家自然科学基金资助项目(61404012) 江苏省科技计划项目(BE2011096)
【分类号】：U466;TG386
【参考文献】
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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年04期
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3 李奇涵;王文广;邓义;张效林;林秀波;刘海静;;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年12期
4 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年12期
5 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年04期
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