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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... and the constitutive relation involving the void evolution. By assuming the voids in casting magnesium alloys were spherical, the growth equation of the voids was obtained from the incompressibility......
, a spherical void-cell model of the material was presented. The velocity and strain fields of the model were obtained from the assumption that the material matrix is homogeneous and incompressible... of the elastoplastic response and the porosity of casting magnesium alloy ZL102. The computed results show satisfactory agreement with experimental data. Key words: casting magnesium alloy; spherical void......
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......
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... cell including a spherical void was used to study the effects of crystallographic orientation on void growth and coalescence in single crystals by LIU et al[16]. It was found that void growth......
of the cell was equal to that of the aggregate. With this method a constitutive model for a cell containing a circular-cylindrical or spherical void was obtained. REUSCH et al[3] extended Gurson’s... Constitutive description of casting aluminum alloy based on cylindrical void-cell model CHEN Bin(陈 斌)1, PENG Xiang-he(彭向和)1, ZENG Xiang-guo(曾祥国)2, WU Xin-yan(吴新燕)1, SUN Shi-tao(孙士涛)1 1......
: The effects of voids (void content, void shape and size) on the interlaminar shear strength of [(±45)4/(0,90)/(±45)2]S and [(±45)/04/(0,90)/02]S composite laminates were investigated. Specimens with void contents in the range of 0.2%-8.0% for [(±45)4/(0,90)/(±45)2]S and 0.2%-6.1% for [(±45)/04/(0,90)/02]S were fabricated from carbon/epoxy fabric through varying autoclave pressures......
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......
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) instead of a spherical RVE is selected because 1) the cylindrical RVE is widely used to analyze void nucleation in Gurson type porous materials[17], 2) it is convenient to apply boundary conditions...; (d) Crack propagation; (e) Crack reaching tensile axis; (f) Spherical void nucleation about 45° from the tensile axis (B zone). After certain times of thermal cycling in the second step, B zone......
Strain distribution of strips with spherical inclusion during cold rolling YU Hai-liang(喻海良)1, BI Hong-yun(毕鸿运)2, LIU Xiang-hua(刘相华)1, TU Yan-feng(涂艳峰)1 1. State Key Laboratory of Rolling...; Abstract: The deformation of 304 stainless steel strips with a spherical inclusion during cold rolling was simulated by 3D finite element method, and the strain distribution......