| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Stress-relaxation Age Forming of A Component with Complex and Large Curvatures: Simulation and Manufacturing |
| Author(s) |
Qi Rong, Zhusheng Shi, Yong Li, Jianguo Lin |
| On-Site Speaker (Planned) |
Zhusheng Shi |
| Abstract Scope |
Stress-relaxation age forming (SRAF) of a panel component (820*300*3 mm) with complex and large curvatures has been simulated and corresponding SRAF test of an Al-Mg-Si alloy, AA6082-T6, has been carried out in this study. An FE model is established to simulate the stress-relaxation ageing (SRA) behaviour of AA6082 during SRAF at various stress levels, for the first time, ranging from elastic to plastic regions and a unified constitutive model for SRA of the material has been implemented into finite element (FE) software ABAQUS via the user-defined subroutine CREEP. An optimised tool surface was determined from FE simulation through springback predication and compensation and was used for manufacturing test. A good agreement of the formed shape has been achieved between the FE simulation and the SRAF test, with a maximum shape error below 4 mm, satisfying the industrial requirement. Hardness results from the formed plate show insignificant change of strength during SRAF, in good agreement with the simulation. The effects of the initial plastic strain and creep strain generated during loading and stress-relaxation stages on the formed shape have also been analysed. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |