椭圆形封头旋压成形过程数值模拟与分析
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摘要
通过对标准椭圆形封头旋压成形工艺进行合理的简化,利用几何方法确定了一次旋压成形过程中旋轮的运动轨迹。在此基础上,应用ANSYS/LS-DYNA软件建立了标准椭圆形封头旋压成形的三维有限元模型,并得到了符合实际要求的数值分析结果。根据模型结果和弹塑性有限元理论,对旋压成形过程中毛坯的变形机理进行了分析,得出了封头在成形过程中不同旋压阶段和不同位置的应力、应变以及厚度减薄率的分布规律,为封头旋压成形过程的研究提供了有效的方法和可靠的依据。
Through reasonable simplification of the spinning forming process of standard elliptical head,the trajectory of the spinning roller is determined by geometric method in the single-pass spinning forming process.On this basis,the three-dimensional finite element model of the standard elliptical head is formed by adopting ANSYS/LS-DYNA software.The model obtains the numerical analysis results that meet the actual requirements.According to the model results and elastoplastic finite element theory,the deformation mechanism of the blank during the spinning forming process is analyzed,and the distribution of stress,strain and thickness at different positions during the forming process is obtained.This provides an effective method and reliable basis for the study on the spinning forming process of head.
Through reasonable simplification of the spinning forming process of standard elliptical head,the trajectory of the spinning roller is determined by geometric method in the single-pass spinning forming process.On this basis,the three-dimensional finite element model of the standard elliptical head is formed by adopting ANSYS/LS-DYNA software.The model obtains the numerical analysis results that meet the actual requirements.According to the model results and elastoplastic finite element theory,the deformation mechanism of the blank during the spinning forming process is analyzed,and the distribution of stress,strain and thickness at different positions during the forming process is obtained.This provides an effective method and reliable basis for the study on the spinning forming process of head.
引文
[1]华凯旋,余小鲁,王柯智.大型压力容器厚壁封头成形工艺及质量控制研究现状分析[J].锻压技术,2015,40(2):8-14.
[2]林波,谷建民,周尚荣,等.超半球壳体多道次拉深旋压工艺研究[J].机械工程学报,2011,47(6):86-91.
[3]刘兴家,张奕黄.封头旋压成形旋轮运动轨迹确定方法的研究[J].塑性工程学报,1997,4(4):84-90.
[4]SHIMIZU I.Asymmetric forming of aluminum sheets by synchronous spinning[J].Journal of Materials Processing Technology,2010,210(4):585-592.
[5]KAWAI K,YANG L N,KUDO H.A flexible shear spinning of axi-symmetrical shells with a general-purpose mandrel[J].Journal of Materials Processing Technology,2007,113(1):28-33.
[6]张艳秋,徐文臣,单德彬,等.薄壁铝合金封头旋压成形工艺研究[J].锻压技术,2006,31(3):74-78.
[7]胡福泰,王家勋.封头旋压数值分析[J].塑性工程学报,1999,6(1):65-68.
[8]张晋辉,詹梅,杨合,等.工艺参数对剪切旋压旋压力和壁厚差的影响[J].材料科学与工艺,2007,15(2):182-185,191.
[9]李文平,张涛,林刚.碟形封头冷旋压成形时的数值分析及旋压力计算[J].金属成形工艺,2003,21(1):7-9.
[10]郭改丽,程巩固,安红萍,等.大型带法兰封头整锻成形工艺数值模拟[J].大型铸锻件,2010,(2):1-4.
[11]冯仲仁,乔长江.钢管混凝土拱桥矢跨比对稳定性影响的研究[J].交通科技,2006,(2):9-10+21.
[12]林正华.牛顿与二阶拟牛顿混合迭代方法[J].高等学校计算数学学报,1994,(3):217-224.
[13]BELYTSCHKO T,LIU W K,MORAN B.Nonlinear finite elements for continua and structures[M].John Wiley&Sons Inc.,2014.
[14]王生武,温爱玲,邴世君,等.滚压强化的残余应力的数值仿真及工艺分析[J].计算力学学报,2008,25(S1):113-118.
[15]秦小勇,李晓杰,Dik.voerman,等.基于LS-DYNA强夯冲击数值模拟[J].水运工程,2007,(9):31-35.
[16]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.压力容器封头:GB/T25198-2010[S].北京:中国标准出版社,2011.
[2]林波,谷建民,周尚荣,等.超半球壳体多道次拉深旋压工艺研究[J].机械工程学报,2011,47(6):86-91.
[3]刘兴家,张奕黄.封头旋压成形旋轮运动轨迹确定方法的研究[J].塑性工程学报,1997,4(4):84-90.
[4]SHIMIZU I.Asymmetric forming of aluminum sheets by synchronous spinning[J].Journal of Materials Processing Technology,2010,210(4):585-592.
[5]KAWAI K,YANG L N,KUDO H.A flexible shear spinning of axi-symmetrical shells with a general-purpose mandrel[J].Journal of Materials Processing Technology,2007,113(1):28-33.
[6]张艳秋,徐文臣,单德彬,等.薄壁铝合金封头旋压成形工艺研究[J].锻压技术,2006,31(3):74-78.
[7]胡福泰,王家勋.封头旋压数值分析[J].塑性工程学报,1999,6(1):65-68.
[8]张晋辉,詹梅,杨合,等.工艺参数对剪切旋压旋压力和壁厚差的影响[J].材料科学与工艺,2007,15(2):182-185,191.
[9]李文平,张涛,林刚.碟形封头冷旋压成形时的数值分析及旋压力计算[J].金属成形工艺,2003,21(1):7-9.
[10]郭改丽,程巩固,安红萍,等.大型带法兰封头整锻成形工艺数值模拟[J].大型铸锻件,2010,(2):1-4.
[11]冯仲仁,乔长江.钢管混凝土拱桥矢跨比对稳定性影响的研究[J].交通科技,2006,(2):9-10+21.
[12]林正华.牛顿与二阶拟牛顿混合迭代方法[J].高等学校计算数学学报,1994,(3):217-224.
[13]BELYTSCHKO T,LIU W K,MORAN B.Nonlinear finite elements for continua and structures[M].John Wiley&Sons Inc.,2014.
[14]王生武,温爱玲,邴世君,等.滚压强化的残余应力的数值仿真及工艺分析[J].计算力学学报,2008,25(S1):113-118.
[15]秦小勇,李晓杰,Dik.voerman,等.基于LS-DYNA强夯冲击数值模拟[J].水运工程,2007,(9):31-35.
[16]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.压力容器封头:GB/T25198-2010[S].北京:中国标准出版社,2011.