Abstract
Maglev train with no mechanical contact of the innovative technology, as well as a series of excellent economic and environmental advantages came into being. More and more people pay attention to it, and it has become one of the most promising transportation means in the new century. According to the actual operation of maglev train, a boundary constraint method is proposed in this paper. On the basis of the actual operation of maglev train, a method of boundary constraint is proposed, and the finite element model is established by using HyperMesh software. Afterwards using ANSYS analysis software to analyzed the statics performance of levitation chassis under the four working conditions of maglev vehicle, and static strength of the levitation chassis based on von Mises stress was assessed. In accordance with the results, the parts with high stress are optimized. The result showed that the stress intensity on the back of the air spring mounting base is relatively high. This situation can be improved by changing the radius to 40 mm fillets. The strength of other parts meets the standard requirement and provided the basis for further optimization calculation. The results have laid a foundation for the fatigue strength test of the suspension chassis of high-speed maglev train.
Highlights
Maglev train is a modern high-tech rail transit project driven by magnetic levitation force
According to the actual operation principle of the levitation chassis, the vertical constraint is at the shaking pillow connected with the car body, the transverse constraint is at the mounting seat of the guiding electromagnet, and the longitudinal constraint is at the connecting hole of the longitudinal beam and the traction rod
In this paper, according to the structural characteristics of levitation chassis of the high-speed maglev train with a speed of 600 km/h designed by CRRC Qingdao Sifang co., Ltd., hypermesh and ANSYS software are used to design a modeling scheme for the mechanical connection mode and the secondary suspension, and the static strength is calculated according to four abnormal working conditions
Summary
Maglev train is a modern high-tech rail transit project driven by magnetic levitation force. It realizes the levitation and guidance between the train and the track without contact through electromagnetic force, and uses the electromagnetic force generated by linear motor to pull the train to run. For high-speed maglev train levitation chassis, we analyze the connection mode of levitation chassis and secondary suspension part and establish the finite element model with hypermesh software. ANSYS finite element analysis software is used to analyze the static strength of levitation chassis under four different working conditions and we put forward feasible suggestions for structure optimization [3]. 93 Xu Shimeng et al.: Finite Element Modeling and Static Strength Analysis on Structure Strength of the High-Speed Maglev Bogie
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