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J. Cent. South Univ. (2017) 24: 675-682 DOI: 10.1007/s11771-017-3468-y Transient thermal behavior of radial fins of rectangular, triangular and hyperbolic profiles with temperature-dependent... focuses on transient thermal behavior of radial fins of rectangular, triangular and hyperbolic profiles with temperature-dependent properties. A hybrid numerical algorithm which combines differential......
Numerical modelling of stress analysis around rectangular tunnels withlarge discontinuities (fault) by a hybridized indirect BEMNooraddin Nikadat, Mohammad Fatehi, Abolfazl Abdollahipour(Mining &.... The effect of large discontinuities (faults) behavior on a jointed medium around rectangular tunnels is studied. A hybridized indirect boundary element code named TFSDDM (fictitious stress displacement......
Secondary hardening behavior of 15CrMnMoV thin rolled tubeCi DING and Weixin HAN Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China摘 要:15CrMnMoV rolled tube is applied to many critical parts of helicopter. The secondary hardening behavior of the steel which varied with the treating process is essential for further usage......
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J. Cent. South Univ. (2019) 26: 1794-1806 DOI: https://doi.org/10.1007/s11771-019-4134-3 Limit variation analysis of shallow rectangular tunnels collapsing with double-layer rock mass based... theorem of limit analysis, the progressive collapse of shallow rectangular tunnels with double-layer rock mass has been theoretically analyzed based on the three-dimensional (3D) velocity discontinuity......
Non-steady FE analysis on porthole dies extrusion of aluminum harmonica-shaped tube CHENG Lei(程 磊), XIE Shui-sheng(谢水生), HUANG Guo-jie(黄国杰), WU Peng-yue(吴朋越), HE You-feng(和优锋) State Key...-viscoplasticity finite element method, the porthole die extrusion process of an aluminum harmonica-shaped tube was successfully simulated based on software Deform-3D. The distribution of stress field......
New technology for brazing aluminum clustered tube of refrigeratorHE Peng(何 鹏)1, FENG Ji-cai(冯吉才)1, YU Ze-xing(余泽兴)2, JIA Jin-guo(贾进国)2, MAI Han-hui(麦汉辉)2(1. State Key Laboratory of Advanced Welding... brazing for the aluminum clustered tube of refrigerator was analyzed. According to characteristic of aluminum and aluminum alloy, a kind of high frequency power supply was devised and applied......
the formulation of these defects, the bites condition and contact status between rectangular groove and workpiece during rolling the first and second spring boards were analyzed. Then, a new oval-diamond groove... with design requirement.Key words:roll forging; spring board; oval-diamond groove; rectangular groove; automobile front axles......
words: concealed karst cave; deep rectangular cavity; collapse mechanism; rock mass Cite this article as: HUANG Fu, ZHANG Min, JIANG Zhen. Collapse mode of rock mass induced by a concealed karst cave... karst cave. On the basis of the feature of the roof collapse above a deep rectangular cavity, a failure mechanism is constructed by using arbitrary curves. Employing this failure mechanism, we obtained......