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Trans. Nonferrous Met. Soc. China 28(2018) 2324-2334 Numerical simulations on material flow behaviors in whole process of friction stir welding En-zhi GAO1,2, Xing-xing ZHANG1, Chun-zhong LIU2, Zong... movement. There are very different flow patterns at the upper and lower parts of the weld. The material on the upper surface has the spiral downward movement that is affected by the shoulder and the lower......
BEHAVIOR OF FLOW STRESS OF ALUMINUM SHEETS USED FOR PRESSURE CAN DURING COMPRESSION AT ELEVATED TEMPERATURE G.S. Fu1,W.Z. Chen1,K.W. Qian1 (1.School of Mechanical Engineering, Fuzhou University, Fuzhou 350002, China) Abstract:The behavior of flow stress of Al sheets used for pressure can prepared by different melt-treatment during plastic deformation at elevated temperature was studied......
capacity calculations by some researchers[5-11]. 2.1 Nonassociated flow rule The plasticity theory indicates that, if the dilatancy angle is not identical to the friction angle, the material...; 0≤η≤1. The case η=1 indicates that the material follows an associated flow rule. For a coaxial nonassociated flow rule, if the soil mass is assumed to follow Mohr-Coulomb failure criterion......
流从外界输入到流程工序的物流图 Fig. 5 Material flows diagram for materials flow containing Mn input to process from surrounding 此种情况下电解锰单位产品能耗E1如式(3)所示:  ...; Material flows diagram for materials flow containing Mn returning to upstream process maching 此种情况下电解锰单位产品能耗E2如式(7)所示: (7) 与电解锰单位产品理想能耗相比,其能耗增量如式(8)所......
, an ideal condition that the frictional coefficient is zero is considered. Fig.1 Finite element analysis model Table 1 Parameters of material[17-18] Table 2 Flow stress model of materials[18-19... plastic strain εp. The plastic wave velocity vp can be obtained by applying the material parameters and flow stress model to Eqn.(7), as shown in Fig.8. The plastic wave velocity vp decreases......
Simulation of Flow Field of Molten Salt in Neodymium Metal Electrolytic Cell Using Vortex-Flow Function Method Kong Xiangmin1,Ren Yonghong2,Xie Liying1 (1.Baotou Research Institute of Rare Earth, Baotou 014010, China;2.China Metallurgical Import &Export Baogang Company, Baotou 014010, China) Abstract:With the applications of Nd-Fe-B material extending in recent years, the materials......
J. Cent. South Univ. Technol. (2008) 15: 575-580 DOI: 10.1007/s11771-008-0108-6 Hot deformation behaviors and flow stress model of GCr15 bearing steel LIAO Shu-lun(廖舒纶)1, 2, ZHANG Li-wen(张立文)1... to be 351kJ/mol and 4.728, respectively. Meanwhile, models of flow stress and dynamic recrystallization (DRX) grain size were also established. The model predictions show good agreement with experimental......
J. Cent. South Univ. Technol. (2008) 15: 276-279 DOI: 10.1007/s11771-008-0051-6 Seismic failure mechanisms for loaded slopes with associated and nonassociated flow rules YANG Xiao-li(杨小礼), SUI... bound method of limit analysis and finite difference method of numerical simulation, considering the influence of associated and nonassociated flow rules. Quasi-static representation of soil inertia......
; flow pattern; simply supported beam ______________________________________________________________________________ 1 Introduction Mineral resources are important material foundation of both national...J. Cent. South Univ. Technol. (2007)04-0580-04 DOI: 10.1007/s11771-007-0111-3 Quality evaluation of layerlike backfilling and flow pattern of backfill slurry in stope PENG Xin(彭 欣), LI Xi......