Five types of tensile tests were conducted to study the yield behavior of 2A12-T4 aluminum alloy. Parallel finite element models were built for each test and solved with ABAQUS with different yield criterions. The result shows that any of the four criterions: von Mises yield criterion, Tresca criterion, Twin-Shear criterion and yon Mises criterion with hydrostatic pressure correction, overestimates the yield strengths of the specimens. Rather than hydrostatic pressure, Lode stress parameter is the key factor that affects the differences between experimental and simulation results. Based on this concept, a new yield model with Lode dependence modified from yon Mises criterion is postulated. Although one more parameter needs to be confirmed, the simulation results of this yield model are better than those of other criterions.
参考文献
| [1] | G I Taylor;H Qulnney .[J].Philosophical Transactions of the Royal Society,1931,230:323. |
| [2] | W A Spitzig .[J].Acta Metallurgica,1979,27:523. |
| [3] | W A Spitzig;R J Sober;O Richmond .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1976,7A:1703. |
| [4] | W A Spitzig;O Richmond .[J].Acta Metallurgica,1984,32:457. |
| [5] | B S Thomas;J W Yoon .[J].International Journal of Plasticity,2004,20:705. |
| [6] | H Aretz .[J].Mechanics Research Communications,2007,34:344. |
| [7] | J Baxdet .[J].Journal of Applied Mechanics,Transactions of the ASME,1990,57:498. |
| [8] | P Menetrey;K Willam .[J].ACI Structural Journal,1995,92:311. |
| [9] | O Cazacu;F Barlat .[J].International Journal of Plasticity,2004,20:2027. |
| [10] | Y L Bai;T Wierzbicki .[J].International Journal of Plasticity,2008,24:1071. |
| [11] | W L Hu;Z R Wang .[J].Computational Materials Science,2005,32:31. |
| [12] | M H Yu .[J].Applied Mechanics Reviews,2002,55:169. |
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