Wang Y.-J.,Tsinghua University |
Fang G.,Tsinghua University |
Zhang J.-H.,Tsinghua University |
Zeng P.,Tsinghua University |
And 2 more authors.
Cailiao Kexue yu Gongyi/Material Science and Technology | Year: 2012
The ABAQUS/Explicit was used to model the two-pass power spinning process of the automobile spoke with varying thickness, and the elastic-plastic finite element method (FEM) was carried out to simulate the forming and springback. The severe thinning of a blank was generated with the spinning proceeding, and the formability becomes low at the close up of the spun spoke due to the thickness reduction of 50%. During the simulation, because the FE meshes at the deformation area were distorted seriously, the Arbitrary Lagrange Euler (ALE) technology was used to prevent the mesh distortion and improve the calculation accuracy. The simulated thickness of the spun spoke has good agreement with the measured thickness from experiment. The springback and the residual stress in a spun spoke were calculated by ABAQUS/Standard. The distribution of equivalent plastic strain and springback characteristic are analyzed, and the springback is proportional to the thickness reduction.