Forming of 2A12 Aluminum Alloy Double Curvature Thin-wall Part based on the Hill (1948) Anisotropic Yield Criterion
In order to solve the existing problems such as the less-plump corners and wrinkle during the forming process of a double curvature thin-wall part. Material parameter formulas are calculated based on Hill 1948 anisotropic yield criterion and J2 flow rule. The material mechanical property parameters of 2A12 are obtained using uniaxial tensile experiment. Single factor test method is used and LS-DYNA is applied to conduct finite element analysis. So the influence law of holding force, blank shape and blank size imposed on the finite element model are calculated in sequence. On the basis of these laws, that the blanking force, blank dimension and blank shape are decided. Stamping die for the experiment model is designed and made, deformation measurement technology of coordinate grid circle is used to carry out strain analysis. From the comparison result between experiment and simulated data, it can be seen that Hill 1948 yield criterion and J2 flow law can better solve the formability of 2A12 sheet.
anisotropic yield criterion blank holding force aluminum alloy
De-hai ZHANG Jin Liang Cheng GUO Yan-qin Ll Zhe GUO
School of Mechanical Engineering,Xian Jiaotong University,China Department of Manufacturing Technology,Henan Xinfei Electric Co.,Ltd,China
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
1176-1180
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）