Static mechanics analysis of no bumping or vibration welding structure applied in high-speed & heavy-load CWR with single inclined surface

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	Static mechanics analysis of no bumping or vibration welding structure applied in high-speed & heavy-load CWR with single inclined surface
其他题名	Static mechanics analysis of no bumping or vibration welding structure applied in high-speed&heavy-load CWR with single inclined surface
	Song YuQuan 1; Luo WuWei 2; Tao Yi 2
	2010
发表期刊	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN	1674-7321
卷号	53 期号:12 页码:3153-3160
摘要	Nowadays, the sleeper, railroad bed, welding technology and materials of the high-speed & heavy-load Continuous Welded Rail (CWR) have been improved greatly. However, the orientation relationship between welding surface and rail is still orientation structure, which appeared 185 years ago in UK, namely, the welding surface is normal to the longitudinal direction of the rail. Thus rail welds are subject to vertical pure shear stress, lateral pure shear stress and axial pure tensile stress. Pure shear stress and pure tensile stress are both dangerous stresses, which result in failure of welds under high-speed & heavy-load condition for a long time. When the wheels pass rail welds, it is difficult to avoid vertical bumping and lateral vibration. In order to solve these problems, in this paper we put forward the single inclined welding surface having dip angle alpha with the lateral rail or dip angle beta with the vertical rail and analyze the position geometry and stress state. Thus the vertical bumping and lateral vibration are basically eliminated, then the bearing capacity of the welding surface is significantly improved, and the stress of axial pure tensile and lateral pure shear of the welding surface is reduced.
其他摘要	Nowadays, the sleeper, railroad bed, welding technology and materials of the high-speed&heavy-load Continuous Welded Rail(CWR)have been improved greatly. However, the orientation relationship between welding surface and rail is still orientation structure, which appeared 185 years ago in UK, namely, the welding surface is normal to the longitudinal direction of the rail. Thus rail welds are subject to vertical pure shear stress, lateral pure shear stress and axial pure tensile stress. Pure shear stress and pure tensile stress are both dangerous stresses, which result in failure of welds under high-speed&heavy-load condition for a long time. When the wheels pass rail welds,it is difficult to avoid vertical bumping and lateral vibration. In order to solve these problems,in this paper we put forward the single inclined welding surface having dip angleαwith the lateral rail or dip angleβwith the vertical rail and analyze the position geometry and stress state. Thus the vertical bumping and lateral vibration are basically eliminated, then the bearing capacity of the welding surface is significantly improved, and the stress of axial pure tensile and lateral pure shear of the welding surface is reduced
关键词	continuous welded rail single inclined welding surface bearing capacity stress state regularity
收录类别	CSCD
语种	英语
资助项目	[Ministry of Railway of China]
CSCD记录号	CSCD:4109455
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157842
专题	中国科学院金属研究所
作者单位	1.吉林大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Song YuQuan,Luo WuWei,Tao Yi. Static mechanics analysis of no bumping or vibration welding structure applied in high-speed & heavy-load CWR with single inclined surface[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2010,53(12):3153-3160.
APA	Song YuQuan,Luo WuWei,&Tao Yi.(2010).Static mechanics analysis of no bumping or vibration welding structure applied in high-speed & heavy-load CWR with single inclined surface.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,53(12),3153-3160.
MLA	Song YuQuan,et al."Static mechanics analysis of no bumping or vibration welding structure applied in high-speed & heavy-load CWR with single inclined surface".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 53.12(2010):3153-3160.