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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
Alternative TitleStatic mechanics analysis of no bumping or vibration welding structure applied in high-speed&heavy-load CWR with single inclined surface
Song YuQuan1; Luo WuWei2; Tao Yi2
2010
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN1674-7321
Volume53Issue:12Pages:3153-3160
AbstractNowadays, 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.
Other AbstractNowadays, 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
Keywordcontinuous welded rail single inclined welding surface bearing capacity stress state regularity
Indexed ByCSCD
Language英语
Funding Project[Ministry of Railway of China]
CSCD IDCSCD:4109455
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157842
Collection中国科学院金属研究所
Affiliation1.吉林大学
2.中国科学院金属研究所
Recommended Citation
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.
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