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Elasto-plastic finite element analysis of squaring circular tube HUANG Yuung-ming(黄永明) Department of Mechanical and Computer-Aided Engineering, St. John’s University, Taipei 25135, China... deformation theory was established, and Lagrangian formulation for simulating the squaring process of circular tube was updated. Incremental Coulomb’s friction law was used in the global stiffness matrix......
Undercooling and rapid solidification of Nb-Si eutectic alloys studied by long drop tube WANG Yu-ren(王育人), DONG Shu-yong(董树勇), WEI Bing-chen(魏炳忱), LI Wei-huo(李维火) National Microgravity Laboratory... turbine applications. The two-phase Nb/Nb5Si3 in situ composites exhibit a good balance in mechanical properties. Using the 52 m drop tube, the effect of undercooling and rapid solidification......
Low cyclic fatigue performance of concrete-filled steel tube columnsQIN Peng(秦鹏), TAN Yang(谭杨), XIAO Yan(肖岩)(College of Civil Engineering, Hunan University, Changsha 410082,China)Abstract:Eight... of steel tube in compression zone, and low cycle fatigue tearing rupture failure of steel tube. The seismic behavior was evaluated through the energy index obtained from each cycle.Key words:concrete......
route on the value,distribution,and homogeneity of hardness has been investigated by applying Vickers micro-hardness measurements at various locations of the tube’s transverse planes.Significant... indicate that there is about 50%and 62%reduction of the grain size,compared to the annealed condition,following ECAP process of the copper tube sample after the first and the third pass via route BC......
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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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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 temperature in the reactor, while the increase in external pressure at the material inlet rapidly decreases the average temperature, Venturi temperature, and outlet temperature. The CH4 and O2inside the reactor are combusted completely, and when the material inlet pressure is \90 Pa, the La Cl3 is fully pyrogenated. The contents of CO2, La2O3, and HCl fluctuate near the Venturi tube and finally......
