某新能源汽车企业采用高耐蚀钢S450AW冲压右门板零件,出现四个拐角凸台高度明显偏低的问题,无法满足产品要求。为快速解决生产实际问题,根据产品数模制作拉延及整形分析模型,采用计算机辅助工程(CAE)模拟完成右车门板冲压全工序模拟分析...某新能源汽车企业采用高耐蚀钢S450AW冲压右门板零件,出现四个拐角凸台高度明显偏低的问题,无法满足产品要求。为快速解决生产实际问题,根据产品数模制作拉延及整形分析模型,采用计算机辅助工程(CAE)模拟完成右车门板冲压全工序模拟分析,将仿真分析结果与ATOS I 350&TRITOP三维光学测绘仪逆向扫面实际冲压模具上下模的模面进行对比研究,确定了冲压问题的产生原因并制定模具优化方案。实施优化方案并冲压验证,解决零件凸台高度不足问题,为今后解决此类问题提供了可供选择的技术方案。展开更多
As one of the oldest creatures on the earth, the tortoises have formed a nearly perfect shell structure after millions of years of evolution In this paper, Chinese tortoise shell is studied. Firstly, the scanni...As one of the oldest creatures on the earth, the tortoises have formed a nearly perfect shell structure after millions of years of evolution In this paper, Chinese tortoise shell is studied. Firstly, the scanning model of the tortoise shell is established by means of computer tomography （CT） scanning technology and MIMICS software. Secondly, the solid model of three-dimensional structure of the tortoise shell is constructed by using geomagic studio reverse engineering software. Afterwards, the compression numerical simulation of the tortoise shell structure under low strain rate is conducted with the help of finite element software LS-DYNA. Finally, load-bearing characteristics of the tortoise shell structure and dome-shaped structure are compared and analyzed. The results show that compared withthe dome-shaped structure with the same volume, tortoise shell structure has a higher structural rigidity and can withstand higher pressure. Therefore, tortoise shell structure provide some reference to the design of armored vehicles, sheltersand other types of thin shell structures.展开更多
文摘某新能源汽车企业采用高耐蚀钢S450AW冲压右门板零件,出现四个拐角凸台高度明显偏低的问题,无法满足产品要求。为快速解决生产实际问题,根据产品数模制作拉延及整形分析模型,采用计算机辅助工程(CAE)模拟完成右车门板冲压全工序模拟分析,将仿真分析结果与ATOS I 350&TRITOP三维光学测绘仪逆向扫面实际冲压模具上下模的模面进行对比研究,确定了冲压问题的产生原因并制定模具优化方案。实施优化方案并冲压验证,解决零件凸台高度不足问题,为今后解决此类问题提供了可供选择的技术方案。
文摘As one of the oldest creatures on the earth, the tortoises have formed a nearly perfect shell structure after millions of years of evolution In this paper, Chinese tortoise shell is studied. Firstly, the scanning model of the tortoise shell is established by means of computer tomography （CT） scanning technology and MIMICS software. Secondly, the solid model of three-dimensional structure of the tortoise shell is constructed by using geomagic studio reverse engineering software. Afterwards, the compression numerical simulation of the tortoise shell structure under low strain rate is conducted with the help of finite element software LS-DYNA. Finally, load-bearing characteristics of the tortoise shell structure and dome-shaped structure are compared and analyzed. The results show that compared withthe dome-shaped structure with the same volume, tortoise shell structure has a higher structural rigidity and can withstand higher pressure. Therefore, tortoise shell structure provide some reference to the design of armored vehicles, sheltersand other types of thin shell structures.
