基于Pamstamp的5182铝合金发动机罩内板冲压数值模拟
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摘要
通过三个方向的单向拉伸试验及成形极限试验,获得了5182铝合金的材料性能数据,建立了5182铝合金成形用材料模型。基于Pamstamp软件,建立了铝合金发动机罩内板的冲压数值模型,获得了压边力为1 000 k N,摩擦因数为0. 12时铝合金发动机罩内板的成形性能。研究了工艺参数对铝合金发动机罩内板成形的影响,获得了压边力、摩擦因数对其减薄率和增厚率的影响规律。通过铝合金发动机罩内板冲压试验,验证了数值模拟的可靠性。
By means of the uniaxial tensile tests in three directions and the forming limit tests,the material property of the 5182 aluminum alloy sheet is obtained and then the material model of 5182 aluminum alloy is established. The numerical simulation model of stamping values of the aluminum alloy hood inner is constructed based on the Pamstamp software. The forming performance of aluminum alloy hood inner is obtained when blank holding force and friction coefficient are kept at 1 000 kN and 0. 12,respectively. The effects of blank holding force and friction coefficient on the thinning and thickening rate are obtained after investigation is carried out on the effect of parameters on the forming of aluminum alloy hood inner.The reliability of the results of numerical simulation is verified by the stamping test of the aluminum alloy hood inner.
By means of the uniaxial tensile tests in three directions and the forming limit tests,the material property of the 5182 aluminum alloy sheet is obtained and then the material model of 5182 aluminum alloy is established. The numerical simulation model of stamping values of the aluminum alloy hood inner is constructed based on the Pamstamp software. The forming performance of aluminum alloy hood inner is obtained when blank holding force and friction coefficient are kept at 1 000 kN and 0. 12,respectively. The effects of blank holding force and friction coefficient on the thinning and thickening rate are obtained after investigation is carried out on the effect of parameters on the forming of aluminum alloy hood inner.The reliability of the results of numerical simulation is verified by the stamping test of the aluminum alloy hood inner.
引文
[1]邹京滨,王祝堂.汽车车身铝合金薄板概要[J].轻合金加工技术,2016,44(6):1-6.
[2]苑锡妮,杨兵,曾渝. 5×××系铝合金汽车板研究进展[J].轻合金加工技术,2018,46(6):8-13.
[3]刘辉,江莉,何欢欢.某汽车发动机罩内板冲压成形数值模拟及试验[J].锻压技术,2017,42(2):56-59.
[4]李桂琴,卢仲珺.铝合金前门加强板零件冲压成形数值模拟及参数优化[J].锻压技术,2018,43(10):52-56.
[5]吴明清,鲍梅连,吴长忠.发动机罩内板拉延成形数值模拟及工艺优化[J].热加工工艺,2015,44(21):125-128.
[6]严勇,吴超,胡志力,等.汽车铝合金覆盖件成形数值模拟的各向异性屈服准则研究[J].塑性工程学报,2016,23(2):92-97.
[7]张秀娟,刘彦奎,魏延刚,等.各向异性铝合金板材本构关系及其有限元模拟[J].大连交通大学学报,2008,29(6):44-47.
[8] BARLAT F,LIAN J. Plastic behavior and stretchability of sheet metals. Part I:a yield function for orthotropic sheets under plane stress conditions[J]. International Journal of Plasticity,1989,5:51-66.
[9]田丽.基于Autoform汽车外罩板冲压成形的数值模拟[J].热加工工艺,2017,46(11):113-116.
[2]苑锡妮,杨兵,曾渝. 5×××系铝合金汽车板研究进展[J].轻合金加工技术,2018,46(6):8-13.
[3]刘辉,江莉,何欢欢.某汽车发动机罩内板冲压成形数值模拟及试验[J].锻压技术,2017,42(2):56-59.
[4]李桂琴,卢仲珺.铝合金前门加强板零件冲压成形数值模拟及参数优化[J].锻压技术,2018,43(10):52-56.
[5]吴明清,鲍梅连,吴长忠.发动机罩内板拉延成形数值模拟及工艺优化[J].热加工工艺,2015,44(21):125-128.
[6]严勇,吴超,胡志力,等.汽车铝合金覆盖件成形数值模拟的各向异性屈服准则研究[J].塑性工程学报,2016,23(2):92-97.
[7]张秀娟,刘彦奎,魏延刚,等.各向异性铝合金板材本构关系及其有限元模拟[J].大连交通大学学报,2008,29(6):44-47.
[8] BARLAT F,LIAN J. Plastic behavior and stretchability of sheet metals. Part I:a yield function for orthotropic sheets under plane stress conditions[J]. International Journal of Plasticity,1989,5:51-66.
[9]田丽.基于Autoform汽车外罩板冲压成形的数值模拟[J].热加工工艺,2017,46(11):113-116.