Analysis of FCC sheet metal forming with rate-independent polycrystalline plasticity FEM

作者：Zhang, SR^*; Li, DY; Luo, YB; Peng, YH

来源：Transactions of Nonferrous Metals Society of China, 2004, 14(2): 362-365.

• FCC Sheet metal
• rate-independent
• texture
• polycrystalline plasticity FEM
• orientation probability assignment

A rate-independent polycrystalline plasticity constitutive model considering self and latent hardening was developed, Next, a new orientation probability assignment method was proposed and the crystal orientations were assigned to FE integration points, which represent crystals and can rotate individually. Then cup drawing of FCC aluminum sheet was studied using crystalline plasticity finite element analysis. The results show that the validity of proposed model is proved through comparison between numerical results and experimental ones {001} <110> texture can lead to earing at 45degrees dircction while {124} <211> texture at 0degrees and 90degrees directions. For the rolled aluminum sheet, which contains strong {001} <110> texture, earing is formed at 45degrees direction after cup drawing, For the annealing aliminum sheet, due to the balance between two main texture, the flange earing tendency is not obvious.

• 出版日期2004-4
• 单位上海交通大学