首页|A dynamic simulation of the wheel-rail impact caused by a wheel flat using a 3D rolling contact model

A dynamic simulation of the wheel-rail impact caused by a wheel flat using a 3D rolling contact model

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A three-dimensional (3-D) wheel-rail rolling contact model with a wheel flat was built using commercial software Hypermesh,and the dynamic finite element simulation was conducted using LS-DYNA 3D/explicit code.Influences of the train speed,flat length and axle load on the vertical wheel-rail impact response were discussed,respectively.The results show that the maximum vertical wheel-rail impact force induced by the wheel flat is higher than that generated by the perfect wheel,and these two dynamic impact forces are much greater than the static axle load.Besides,the maximum von Mises equivalent stress and maximum equivalent plastic strain are observed on the wheel-rail contact surface,and both of them as well as the maximum wheel-rail impact force are sensitive to train speed,flat length and axle load.

High-speed trainWheel-rail impactWheel flatFE simulation

Liangliang Han、Lin Jing、Kai Liu

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State Key Laboratory of Traction Power, Southwest Jiaotong University, 111 North Section 1, Second Ring Road, Chengdu 610031, Sichuan Province, China

This study is supported by the National Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesResearch Fund of State Key Laboratory of Traction Power

514753922682015RC092015TPL_T02

2017

10.1007/s40534-017-0131-0

铁道工程科学(英文)
西南交通大学

铁道工程科学(英文)

影响因子：0.403
ISSN：2662-4745
年,卷(期)：2017.25(2)
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