Fatigue Behavior Analysis and Simulation of Foreign Object Damage on S38C High-speed Railway Axle

GAO Jiewei; YU Minghua; ZHU Shunpeng; LIAO Ding; LI Yabo; HAN Jing

doi:10.3901/JME.2022.24.178

Volume 58 Issue 24

Dec 2022

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JOURNAL OF MECHANICAL ENGINEERING > 2022 > 58(24): 178-187.

GAO Jiewei, YU Minghua, ZHU Shunpeng, LIAO Ding, LI Yabo, HAN Jing. Fatigue Behavior Analysis and Simulation of Foreign Object Damage on S38C High-speed Railway Axle[J]. JOURNAL OF MECHANICAL ENGINEERING, 2022, 58(24): 178-187. doi: 10.3901/JME.2022.24.178

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GAO Jiewei, YU Minghua, ZHU Shunpeng, LIAO Ding, LI Yabo, HAN Jing. Fatigue Behavior Analysis and Simulation of Foreign Object Damage on S38C High-speed Railway Axle[J]. JOURNAL OF MECHANICAL ENGINEERING, 2022, 58(24): 178-187. doi: 10.3901/JME.2022.24.178

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Fatigue Behavior Analysis and Simulation of Foreign Object Damage on S38C High-speed Railway Axle

doi: 10.3901/JME.2022.24.178

GAO Jiewei^{1, 2
,},
YU Minghua³,
ZHU Shunpeng^{1,*
,
,},
LIAO Ding¹,
LI Yabo⁴,
HAN Jing³

1.
School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731
2.
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031
3.
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031
4.
CRRC Qingdao Sifang Co., Ltd., Qingdao 266111

Received Date: 26 Jan 2022
Rev Recd Date: 30 Sep 2022

Available Online: 07 Mar 2024

Issue Publish Date: 20 Dec 2022

Abstract

Abstract

Foreign object damage(FOD) is one of the typical issues leading to fatigue failure of high-speed railway axles. Morphologies of the damage on S38C high-speed railway axles were observed by stereomicroscopy. FODs were simulated by firing tungsten steel spheres or cubes under different velocities and incident angles to the outer surfaces of specimen extracted from S38C axle. Step-loading method was employed to determine the four-point bending fatigue strength. Morphologies of damages were investigated by scanning electron microscopy(SEM), and also the fracture surfaces. Statistics of surface damages on S38C axles show that a large fraction of damages are scratches and the percentage of notch is small. Damage volume of normal impact by spherical projectiles increases with improvement of impact velocity. Material losses and microcracks appear in the crater rim and cracks initiated by adiabatic shear band can be found on the floor. Chipping due to deformation and cutting is the feature of damage by incline impact. The shape of impact damage by tungsten cube is various. Regardless of the impact condition, fatigue strength declines with increase of damage depth and it is feasible to assess impact damage by depth alone. The results provide guidance to the maintenance of S38C railway axles subjected to FODs.
- high-speed railway,
- S38C axle,
- foreign object damage,
- fatigue behavior

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References(24)

References

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