共搜索到7558条信息，每页显示10条信息，共756页。用时：0小时0分0秒499毫秒
to its yield limit. At this time, the Rx/Ry nearly reaches its maximum value, the spherical deformation coefficient will not always be decreased as the spanwise forming curvature radius will not reduce...Trans. Nonferrous Met. Soc. China 29(2019) 270-278 Effect of prestressed ultrasonic peen forming parameters on bending curvature and spherical deformation of plate Tao ZHANG1,2, Lei LI1, Shi-hong LU1......
J. Cent. South Univ. (2020) 27: 1880-1890 DOI: https://doi.org/10.1007/s11771-020-4415-x A non-monotonic blow-off limit of micro-jet methane diffusion flame at different tube-wall thicknesses LI... on the blow-off limit is investigated via numerical simulation in the present work. The results show that the blow-off limit of micro-jet methane diffusion flame firstly increases and then decreases......
THE STABILITY INVESTIGATION OF FERROELECTRIC SrBi2Ta2O9 THIN FILMS ANNEALED IN FORMING GAS A.D.Li1,N.B.Ming1,D.S.Wang1,Z.G.Liu1,D.Wu1,T.Yu1,A.Hu1 (1.National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China) Abstract:The hysteresis loop changes of ferroelecric SrBi2 Ta2 O9 (SBT) thin films (330nm) vsthe temperature of forming gas (5%o hydrogen+95%o nitrogen......
......
, 2014. LU Jin-dong. Research on warm forming limit of automotive lightweight aluminum alloy sheet[D]. Dalian: Dalian University of Technology, 2014. [2] 李传福, 张丽萍. 浅谈铝合金材料在未来汽车轻量化中的应用与发展[J]. 装备制造技术, 2015(4... aluminum alloy under the condition of hot forming were studied. The results show that with the increase of temperature, the formability of the material is significantly improved, and the limit drawing......
FEM SIMULATION FOR LASER FORMING PROCESSING Y.B.Chen1,S.Y.Lin2,X.Y.Wang2,L.Q.Li1 (1.State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China;2.Harbin Research Institute of Welding, Harbin 150001, China) Abstract:Laser forming involves heating sheet metal workpiece along a certain path with a defocused laser beam directed irradiate......
range of micro heat pipe (MHP) with the sintered wick, the forming principle of copper powders in wicks and MHP’s heat transfer capabilities were first analyzed, then copper powders with different... theoretical analysis, which suggests that the larger the wick’s porosity, the better the heat transfer capabilities of the MHP. Key words: micro heat pipe; copper powders; wick; forming principle ......
J. Cent. South Univ. Technol. (2008) 15(s1): 215-220 DOI: 10.1007/s11771-008-349-4 Application research on metal rheological forming of reproducing kernel partial method YIN Shui-ping(殷水平), LUO... guidance for the application of meshless in actual engineering. Key words: numerical simulation; meshless method; reproducing kernel partial method(RKPM); rheological forming 1 Introduction Numerical......
field, which leads to thermal stress, occurs in metal sheet. Once the thermal stress goes beyond the material yield limit at corresponding temperature, expectable bending forming can be obtained due... Numerical simulation of temperature field in plasma-arc flexible forming of laminated-composite metal sheets SONG Wen-qing(宋文庆)1, XU Wen-ji(徐文骥)1, WANG Xu-yue(王续跃)1, MENG Jian-bing(孟......
Microstructure behavior and metal flow during continuously extending-extrusion forming of semisolid A2017 alloy GUAN Ren-guo(管仁国), WEN Jing-lin(温景林), WANG Shun-cheng(王顺成), LIU Xiang-hua(刘相华...; 1 Introduction Semisolid metal forming process is a kind of near-net-shape technology and attracts attentions all over the world[1-4]. Most available semisolid processes......
