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; 文章编号:1672-7207(2008)04-0748-07 Numerical simulation of extrusion process of X5214 aluminum alloy profile LIN Gao-yong, ZHOU Jia, ZHENG Xiao-yan, FENG Di..., Changsha 410083, China) Abstract: The finite element method (FEM) and the finite volume method (FVM) were used for numerical simulation of the extrusion process. The forming of a complex thin-walled......
of suspension system and geometric parameters have significant effect on vehicle performance. Key words: off-road vehicles; handling; anti-roll bar; coil spring; vehicle lateral dynamic; Trucksim software Cite... and steady states with evaluation of vehicle’s variables such as vehicle’s slip angle, lateral acceleration and vehicle’s rotational speed. Suspension system geometry can markedly change the amounts......
and Ag-Dy binary phase diagrams, the 700℃ isothermal section of Au-Ag-Dy ternary system(Dy≤35%, mole fraction) was established by X-ray diffraction analysis, differential thermal analysis and optical microscopy. It is found that there is a long single-phase region, Au(Ag) or Ag(Au), along the Au-Ag binary isomorphous system on the gold-silver-rich side of the 700℃ isothermal section and between......
Effects of liquefaction-induced large lateral ground deformation on pile foundationsWANG Yan-li(王艳丽)1, 2, CHENG Zhan-lin(程展林)1, WANG Yong(王勇)2(1. Key Laboratory of Geotechnical Mechanics... Mechanics, Chinese Academy of Sciences), Wuhan 430071, China)Abstract:The pile-soil system interaction computational model in liquefaction-induced lateral spreading ground was established by the finite......
下的玻璃润滑膜的温度分布和黏度变化规律,并根据玻璃软化规律预测玻璃润滑膜的厚度,并提出玻璃润滑工艺的改进方案. 关键词:钛合金；型材挤压；玻璃润滑；有限元模拟 中图分类号:TG 146.4 文献标志码:A FEM simulation of glass lubrication during section extrusion... words: titanium alloy; section extrusion; glass lubrication; finite element simulation 在金属的塑性变形过程中,摩擦和润滑在变形过程中起着重要的作用[1].由于挤压加工在变形初期和变形后期的非稳态金属流动,在所有的金属塑性加工工艺中,挤压加工可能是针对润滑问题最为敏感的加工方法,常常伴随着挤压制品的表面质量下......
Trans. Nonferrous Met. Soc. China 22(2012) s21-s26 Influence of tool parameters on internal voids in cross wedge rolling of aluminum alloy parts JIA Zhi, ZHOU Jie, JI Jin-jin, YU Ying-yan, XIAO Chuan School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China Received 9 July 2012; accepted 3 August 2012 Abstract: The internal void of cross wedge rolling (CWR) part......
Influence of extrusion temperature on microstructure and mechanical properties of Mg-4Y-4Sm-0.5Zr alloy LI Da-quan(李大全)1, 2, WANG Qu-dong(王渠东)2, DING Wen-jiang(丁文江)2, J. J. BLANDIN3, M... of the extruded alloy are obviously refined by the occurrence of DRX. The average grain size of the extruded alloy increases with increasing the extrusion temperature, leading to a slight decrease of the ultimate......
; Time-dependent lateral... the lateral response of pile in the two types of soil. The whole geotechnical model is suitable for problem of piles to determine the design quantities such as lateral deformation, lateral soil stress......
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Al2Ce compound. Al2Ce has the refining effect on the microstructure of alloy. During the extrusion at 523 K, dynamic recrystallization happens in the alloy. The dynamic recrystallization refines the grain size of alloy obviously. The phases are refined clearly after extrusion deformation, and the strength and ductility of the alloy are increased accordingly. Key words: Mg-Li alloy; microstructure......
