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J. Cent. South Univ. (2021) 28: 2091-2104 DOI: https://doi.org/10.1007/s11771-021-4755-1 Mechanical behaviors of cross roller bearings with raceway roundness error HUANG Jian(黄健), LI Chao-yang(李朝阳... Nature 2021 Abstract: Taking the raceway roundness error into account, mechanical characteristics of cross roller bearings (CRBs) were investigated. A static analysis model of CRBs considering......
Super-Elasticity Characteristics of TiNi Alloy Processed by Equal Channel Angular Extrusion () 摘要:A Ni-rich TiNi alloy was processed by Equal Channel Angular Extrusion (ECAE) at 500℃. After four... characteristics were discussed. 关键词:equal channel angular extrusion; TiNi shape memory alloy; R-phase transformation; martensitic transformation; super-elasticity; [全文内容正在添加中] ......
J. Cent. South Univ. Technol. (2011) 18: 1744-1749 DOI: 10.1007/s11771-011-0897-x Cellular automation model for analyzing capacity of branch road section WANG Ying-zi(王英姿)1, 2, LONG Dong-fang(龙东方... was put forward by introducing meeting behavior to reflect the relation between safe meeting speed and road width. The numerical simulation results depict several relation curves between road section......
such as die forging, rotary forging, and extrusion and cross wedge rolling (CWR) [1-4]. Of all the forming methods, CWR has been used to produce a wide range of stepped axisymmetric components [5]. Compared... on Mechanical Engineering and Mechanics. 2007, Pts 1 and 2: 1723-1727. [11] ZHAO J, LU L Q. The mechanism on defect of transition section with multi-wedge cross wedge rolling forming automotive semi......
/min (equal to the speed of field test), and every sleeper was pushed to a total distance of 8 mm. The lateral resistance and displacement curves were recorded. 3 Simulating parameters To calibrate...J. Cent. South Univ. (2016) 23: 2373-2381 DOI: 10.1007/s11771-016-3296-5 Discrete element method analysis of lateral resistance of fouled ballast bed XU Yang(徐旸)1, 2, 3, GAO Liang(高亮)1, 2, 3, ZHANG......
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pass. The diameter of equal cross-section channel is 58 mm. The ECAEed, i.e., equal channel angular extrusion processed, material was machined into samples with the height of 10 mm and diameter of 10... and ductility increased through severe plastic deformation [9-12]. During ECAE, a billet is pressed through a die that consists of two channels with equal cross-section, intersecting at some angle φ......
extrusion tooling based on SOLIDWORKS software. Figure 1 shows the dimensions and cross-section of the sheet-metal profile used in the present study. According to the P-ECAP die technique character... channel angular processing (ECAP) and porthole die extrusion techniques, a novel technique, namely portholes-equal channel angular processing (P-ECAP), was studied. Extrusion of AL6005A plate used......
Bonding interface zone of Mg-Gd-Y/Mg-Zn-Gd laminated composite fabricated by equal channel angular extrusion WU Di(吴 迪)1, 2, CHEN Rong-shi(陈荣石)1, HAN En-hou(韩恩厚)1 1. State Key Laboratory... 2009; accepted 30 January 2010 Abstract: In order to improve the mechanical properties and corrosion resistance of Mg alloys, the equal channel angular extrusion (ECAE) was employed to fabricate......
and die hole are smaller. The influence extent of heat transfer during the extrusion on the temperature inhomogeneity on the cross section of the profile from large to small is friction heat deformation heat, and the heat transfer between the metal and die. By using the die structure design and the rationalization of extrusion parameters, the temperature inhomogeneity on the cross section......
