American Society of Civil Engineers


Structure Optimal Design of Maglev Train Car Body


by Shuguang Yao, (Key Laboratory for Track Traffic Safety of Ministry of Education, Central South University, Changsha, 410075, Hunan, China, E-mail: ysgxzx@163.com), Hongqi Tian, (Key Laboratory for Track Traffic Safety of Ministry of Education, Central South University, Changsha, 410075, Hunan, China), and Ping Xu, (Key Laboratory for Track Traffic Safety of Ministry of Education, Central South University, Changsha, 410075, Hunan, China)

pp. 2339-2347, (doi:  http://dx.doi.org/10.1061/40996(330)345)

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Document type: Conference Proceeding Paper
Part of: Logistics: The Emerging Frontiers of Transportation and Development in China
Abstract: The sidewall stiffness of the Chinese Maglev train is so weak that it disagrees with the situation of passing each other in open air at high speed. The first problem of the structure optimal design to settle down is to enhance the sidewall stiffness. The car body weight was defined as the object variables, and the deflections and stresses in the sidewall were defined as state variables, and the board thickness of profiled extrusion material and composite plate were defined as design variables. Combined with finite element analysis technology, the optimal design of the maglev train body structure was carried out by mathematical programming approach method. The transversal displacement in the sidewall from load case 6 reduced from 3.8241mm to 3.2mm and from load case 7 reduced from 2.9153mm to 2.3531mm after 18 times iteration calculation optimized. The displacement value was decreased by 20%. The proposed method can be used to optimize the existing and new car body structure of domestic maglev train.


ASCE Subject Headings:
Optimization models
Magnetic levitation trains
Finite element method
Mathematical models