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| 3D modeling microstructure and crystal plasticity finite element simulation |
| Received:November 27, 2017 Revised:February 28, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20171127001 |
| KeyWord:Voronoi diagram polycrystal CPFEM crystal orientation anisotropy |
| Author | Institution |
| 辛存 |
1. 太原理工大学 应用力学与生物医学工程研究所, 太原 ;
2. 太原理工大学力学学院, 材料强度与结构冲击山西省重点实验室, 太原 ;
3. 太原理工大学力学国家级实验教学示范中心, 太原 |
| 赵聃 |
1. 太原理工大学 应用力学与生物医学工程研究所, 太原 ;
2. 太原理工大学力学学院, 材料强度与结构冲击山西省重点实验室, 太原 ;
3. 太原理工大学力学国家级实验教学示范中心, 太原 |
| 闫晓鹏 |
1. 太原理工大学 应用力学与生物医学工程研究所, 太原 ;
2. 太原理工大学力学学院, 材料强度与结构冲击山西省重点实验室, 太原 ;
3. 太原理工大学力学国家级实验教学示范中心, 太原 |
| 王志华 |
1. 太原理工大学 应用力学与生物医学工程研究所, 太原 ;
2. 太原理工大学力学学院, 材料强度与结构冲击山西省重点实验室, 太原 ;
3. 太原理工大学力学国家级实验教学示范中心, 太原 |
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| Abstract: |
| The anisotropic mechanical performance especially under finite deformation is the key factor in structural design of materials and service life of spacecraft.The phenomenal model can't reflect material microstructures(grain shape,orientation,etc.)which mainly influence the macroscopic plastic anisotropy.In this paper,the three-dimensional Voronoi model that can reflect the actual structure of crystals is established.Finite deformation response of aluminum alloy based on the crystal plasticity theory is calculated.First,the material microstructure of representative volume element(RVE)is established.The accuracy of calculation by crystal plastic finite element method(CPFEM)is compared with that of experiment.Second,the macroscopic anisotropy influenced by grain morphology and orientation distribution in simple tension is analyzed.The influences on the macroscopic mechanical properties of microscopic properties are discussed from both viewpoints of structure and material.Finally,results show that the model established can reflect the mechanical properties of aluminum alloy,which is useful for providing reliable predictions of mechanical properties of actual structures in aerospace and other manufacture engineering fields. |
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