An_investigation_into_structure_failure_of_Chinese_high-speed_train.pdf

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An_investigation_into_structure_failure_of_Chinese_high-speed_train.pdf

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An_investigation_into_structure_failure_of_Chinese_high-speed_train

Engineering Failure Analysis 13 (2006) 427–441 /locate/engfailanalAn investigation into structural failures of Chinese high-speed trains Weihua Zhang *, Pingbo Wu, Xuejie Wu, Jing Zeng State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China Received 12 July 2004; accepted 26 December 2004 Available online 7 April 2005Abstract This paper focuses on the structural failures of various high-speed trains in China. The reasons for the structural failures of the trains are analyzed based on their design and service condition. Based on examples considered in the present paper, an optimization design method and a reasonable structure are put forward. For the motor car of the high speed train ‘‘Blue Arrow’’ dynamic stresses in service are investigated through field tests and theory analysis. According to the dynamic stress obtained by measurement on site, some results to evaluate service life are obtained. 2005 Elsevier Ltd. All rights reserved. Keywords: Structure; Failure; Stress; Bogie; High-speed train1. Introduction In China, railways are a major means of transportation for goods and passengers. Now the total of rail- way lines is more than 70,000 km. In the next 15 years, 30,000 km of new railway lines will be constructed. The speed of trains was very slow 10 years ago, about 50–70 km/h. From the last decade, a strategy to raise train speed was put forward by Chinese Railway Ministry. From 1997 to now, the service speed of passen- ger trains in the main lines increases from about 60 to 150 km/h. On some special passenger transportation lines, the train speed reaches 200 km/h. During the last few years, a prototype of EMU high-speed train was developed. The maximum field test speed of the high-speed train reaches 321.5 km/h. But with an increase of train speed, problems of structure reliability become very important in the running safety of the trains.1350-6307/$ - see front matter 2005 Elsevier Ltd. All rights reserve