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was used to generate the virtual polycrystalline microstructure. The effect of grain size and necking during the tensile test has been analyzed. 2 Theory of crystal plasticity 2.1 Kinematics of crystalline... Simulation of polycrystalline aluminum tensile test with crystal plasticity finite element method SI Liang-ying(司良英)1, 2, L? Cheng(吕 程)2, K. Tieu2, LIU Xiang-hua(刘相华)1 1. State Key Laboratory......
method based on conventional plastic deformation theory is unable to capture the anisotropy of metal polycrystals. Therefore, crystal plasticity finite element method (CPFEM) becomes a candidate... constitutive model are summarized as follows. In the framework of crystal plasticity theory [20, 21], a crystalline material is embedded on its lattice, whereas the lattice itself undergoes elastic deformation......
are discussed in detail. 2 Crystal plasticity theory The crystalline material under load undergoes crystallographic slip due to dislocation motion on the active slip systems and elastic deformation including...; Abstract: The crystal plasticity finite element method(CPFEM), which incorporates the crystal plasticity......
was developed considering grains at free surface layer as single grains. Based on the rate-dependent crystal plasticity theory, the analysis of the scale effect mechanism on upsetting deformation... an analysis model based on the crystal plasticity theory. For lower constriction, the grains at the free surface layer of a micro rod were treated as single grains, and their deformation behavior......
; Abstract: With applied dislocation theory, the effects of shear and normal stresses on the slide and climb motions at the same section of a crystal were analyzed. And, based on the synergetic... A novel limiting strain energy strength theory LIU Guang-lian(刘光连) School of Mechanics & Electrical Engineering, Central South University, Changsha 410083, China Received 10 August 2009......
Simulation of lattice orientation effects on void growth and coalescence by crystal plasticity Mei YANG1,Xianghuai DONG1 (1.Department of Plastic Forming,Shanghai Jiaotong University,Shanghai 200030,China) Abstract:A three dimensional rate-dependent crystal plasticity model is applied to study the influence of crystal orientation and grain boundary on the void growth and coales- cence. The 3D......
formulation of the interface model according to the bounding surface plasticity theory is described first. Similar to granular soils, it has been shown that the mechanical behavior of sand-structure... as the atmospheric pressure (i.e., patm=101 kPa). In the elasto-plasticity theory, the plastic strain rate vector is calculated by áΛ?R  ......
on the base of crystal plasticity theory. It describes the mechanism of crystalline dislocation slip in plastic deformation of crystal. The combination of MCR with FEM, namely, crystal plastic finite... and efficiency are the key problems for numerical modeling of crystal plasticity, which will limit its development and application in finite element (FE) simulation evidently. Since implicit iterative algorithms......
J. Cent. South Univ. Technol. (2010) 17: 674-682
DOI: 10.1007/s11771-010-0539-8
Effect of Nb on plasticity and oxidation behavior of TiAlNb intermetallic compound by density functional theory
LI... be improved with the Nb content of 8.33%-12.5% (mole fraction).
Key words: TiAl; density functional theory; Nb doping; plasticity; oxidation behavior
: In order to predict the earing behavior during deep drawing of magnesium alloy accurately, a crystal plasticity theory combined with finite element method was proposed. First of all, based... of magnesium alloy based on crystal plasticity theory[J]. Chinese Journal of Rare Metals, 2008, 32(6): 766-773. [23] WALDE T, RIEDEL H. Simulation of earing during deep drawing of magnesium alloy AZ31......AZ31镁合金板材冲压成形制耳的晶体塑性模拟
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来源: 《中国有色金属学报2014年第8期》——唐伟琴 李大永 彭颖红