Finite element simulations of wheel-rail impact response induced by wheel tread spalling of high-speed trains

WANG Jinneng; GUO Xin; JING Lin; WANG Kaiyun

doi:10.11883/bzycj-2021-0374

Volume 42 Issue 4

May 2022

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WANG Jinneng, GUO Xin, JING Lin, WANG Kaiyun. Finite element simulations of wheel-rail impact response induced by wheel tread spalling of high-speed trains[J]. Explosion And Shock Waves, 2022, 42(4): 045103. doi: 10.11883/bzycj-2021-0374

Citation:

WANG Jinneng, GUO Xin, JING Lin, WANG Kaiyun. Finite element simulations of wheel-rail impact response induced by wheel tread spalling of high-speed trains[J]. Explosion And Shock Waves, 2022, 42(4): 045103. doi: 10.11883/bzycj-2021-0374

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Finite element simulations of wheel-rail impact response induced by wheel tread spalling of high-speed trains

doi: 10.11883/bzycj-2021-0374

WANG Jinneng^1
,,
GUO Xin^{1, 2},
JING Lin^{1
,
,},
WANG Kaiyun¹

1.
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2.
CRRC Qishuyan Institute Co. Ltd., Changzhou 213011, Jiangsu, China

Received Date: 2021-09-07
Rev Recd Date: 2021-10-21

Available Online: 2022-03-11

Publish Date: 2022-05-09

Abstract

Abstract

Wheel tread spalling is one of the common forms of wheel out-of-roundness damage of railway vehicles. During the wheel-rail rolling contact process, the wheel tread spalling will circularly impact the rail, inducing an abnormal large dynamic wheel-rail interaction, which has a serious effect on the stability and safety of high-speed trains. In order to reveal the mechanism of dynamic wheel-rail interaction induced by wheel tread spalling of high-speed trains, a three-dimensional finite element model for the wheel-rail rolling contact was built using the commercial software LS-DYNA. The mechanical responses of the wheel-rail impact caused by the wheel tread spalling of high-speed trains were simulated via the implicit-to-explicit sequential solution. The response characteristics of the wheel-rail vertical/longitudinal contact forces, contact pressure, contact patch, adhesion-slip areas, speed distribution of rail surface nodes, and the stress/strain states during the wheel-rail impact process were analyzed. Meanwhile, the effects of key parameters such as train speed, spalling length and spalling depth on the wheel-rail impact responses were discussed. The results indicate that the wheel-rail vertical dynamic contact force caused by the wheel tread spalling first increases with the train speed and then decreases, and the maximum value appears at a train speed of 300 km/h, which can reach 1.35 times the quasi-static wheel-rail vertical contact force. The maximum wheel-rail longitudinal force fluctuates slightly with the increase of the train speed, and is about 1.25 times the steady wheel-rail longitudinal contact force. The maximum wheel-rail vertical contact force, tangential contact force, the maximum von Mises stress, and equivalent plastic strain of the wheel-rail are monotonically increase with the spalling length. The spalling depth has almost no effect on the wheel-rail contact force, the maximum von Mises stress and equivalent plastic strain of the rail, but has a significant effect on the maximum von Mises stress and equivalent plastic strain of the wheel. The obtained results can provide technical support for the optimal design of the wheel-rail system and the safety of the train operation.
- wheel tread spalling,
- impact response,
- wheel-rail rolling contact,
- high-speed train,
- finite element simulation

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References(26)

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