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A physical mechanism based investigation on the elasto-plastic-damage behavior of anisotropic aluminum alloys under finite deformation |
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| Authors: | Cen Chen NaiGang Liang Fang Liu Qiang Fu |
| Affiliation: | 1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China 2. School of Transportation, Wuhan University of Technology, Wuhan, 430063, China 3. China National Light Weight Gas Turbine Development Center, Beijing, 100190, China |
| Abstract: | The elasto-plastic-damage behavior of anisotropic aluminum alloys is investigated under finite deformation using a physical mechanism based constitutive model. With an application to the structural calculation, the present model is used to describe and analyze the mechanical response of anisotropic 6260-T6 aluminum alloy extrusions. For the tensile specimens extracted along three different material orientations from the extruded aluminum profile, twelve simulations are carried out covering four different specimen geometries. The simulation results in force-displacement response and central logarithmic axial strain evolution are compared with experimental results. From the comparisons, it can be concluded that the present model has the capacity to describe the behavior of anisotropic material. From the force-displacement curves, the anisotropy is observed in different material orientations, and the physical mechanism of anisotropy is analyzed. |
| Keywords: | elasto-plastic-damage behavior anisotropy physical mechanism finite deformation constitutive theory component assembling model |
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