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Nonclassical constitutive model involving void evolution of casting magnesium alloy CHEN Bin(陈斌), PENG Xiang-he(彭向和), FAN Jing-hong(范镜泓), SUN Shi-tao(孙士涛) College of Resource and Environment...> Abstract: The void evolution equation and the elastoplastic constitutive model of casting magnesium alloy were investigated. The void evolution equation consists of the void growth and the void......
Constitutive model for casting magnesium alloy involving spherical void evolution CHEN Bin(陈 斌), PENG Xiang-he(彭向和), FAN Jing-hong(范镜泓), SUN Shi-tao(孙士涛) Department of Engineering Mechanics... containing numerous voids. These voids will evolve during material deformation and markedly affect material behaviors, so it is important to investigate the equation of the void evolution......
Constitutive description for casting magnesium alloy involving void evolution CHEN Bin(陈 斌)1, 2, YUAN Quan(袁 权)1, 2, LUO Ji(罗 吉)1, 2, FAN Jing-hong(范镜泓)1 1. College of Resources and Environmental... been made in the analyses of the void evolution and the corresponding mechanical properties of materials[3-7]. It has been found that the microvoids usually distribute randomly in materials, and void......
Detailed Evolution Mechanism of Interfacial Void Morphology in Diffusion BondingChao Zhang,Hong Li,Miaoquan LiSchool of Materials Science and Engineering, Northwestern Polytechnical University摘 要... properties of joints were examined, and the evolution of interfacial void morphology was analyzed in detail. The results showed that there were four typical interfacial void shapes generating sequentially......
of a cylindrical void-cell model the evolution equation of the voids was obtained. The evolution equation was embedded into a nonclassical elastoplastic constitutive relation, and an elastoplastic constitutive relation involving void evolution was obtained. A corresponding finite element procedure was developed and applied to the analyses of the distributions of the axial stress and porosity......
Void damage evolution of LF6 aluminum alloy welded joints under external load and thermal cycling conditions MI Guo-fa(米国发)1, ZHAO Da-wei(赵大为)1, DONG Cui-fen(董翠粉)1, NIU Ji-tai(牛济泰)1, 2, JIN Cheng... aerospace thermal cycling tests, the effect of thermal cycle on the void damage evolution mechanism of LF6 aluminum alloy welded joint was investigated. The results show that micro-voids form around......
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......
evolution during the process of creep,based on some hypothesis from experiments.The model was implemented and then was used to predict the evolution of void fraction in the 2.25Cr-1Mo steel of uniaxial...A 2-D mesoscopic model for the evaluation of creep damage induced by void growth in polycrystalline metalsKimiaki YOSHIDA摘 要:At elevated temperature,creep......
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; Abstract: The influence of crystallographic orientation on the void growth in FCC crystals was numerically simulated with 3D crystal plasticity finite element by using a 3D unit cell including a spherical void, and the rate-dependent crystal plasticity theory was implemented as a user material subroutine. The results of the simulations show......