| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
|
| Presentation Title |
Predicting Strength and Ductility of Multi-directionally Deformed Steel Plate: a Coupled Distortional Hardening and Continuum Damage Mechanics |
| Author(s) |
Myoung-Gyu Lee, Seonghwan Choi, Soo-Chang Kang |
| On-Site Speaker (Planned) |
Myoung-Gyu Lee |
| Abstract Scope |
Strength and ductility of steel plate formed by multi-axial bending process are predicted by advanced constitutive models implemented in finite element (FE) simulations. The constitutive model for simulating the complex deformation couples a distortional anisotropic hardening and continuum damage mechanics (CDM). In the anisotropic hardening model, the yield surface is distorted following non-proportional loading paths and it reproduces the Bauschinger effect and transient hardening behavior. Additionally, the concept of CDM is coupled to the hardening model to predict the flow stress covering from yielding to post-necking response. To identify the constitutive model parameters, tension-compression and two-step tension tests at various material orientations are conducted. The FE simulations for multi-axial bending process are performed, and the predicted yield strength, uniform elongation, and ultimate tensile strength are compared with experiments. The FE simulation with the developed coupled plasticity-damage model can predict the multi-directional bending deformation of steel plate within the reliable accuracy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Shaping and Forming, Mechanical Properties |