Railway wheels and axles are the most critical parts of the railway rolling stock. The wheel carry axle loads and guide the vehicles on the track. Therefore, the contact surface of wheel are subjected to wear and fatigue process. The wheel damage can be divided into three types; wear, contact fatigue failure and thermal crack due to braking. Therefore, in the contact surface between the wheel and the rail, the materials are heat treated to have a specific hardness. The manufacturing quality of the wheel have a considerable influence on the formation of tread wear and damage. Also, the residual stress on wheel is formed during the manufacturing process is one of the main sources of the damage. In this paper, the mechanical characteristic and the residual stress according to wheel material have been evaluated by applying finite element analysis and conducting mechanical tests.
[1]
주기남,et al.
Seed 레이저용 정상분산 영역에서 발진하는 간단한 구조의 이터븀 기반 모드 잠금 광섬유 레이저
,
2014
.
[2]
Keun-Bong Yoo,et al.
The Characteristics of Residual Stresses in the Welded Joint of P92 Steel for Fossil Power Plant by the X-ray Diffraction
,
2008
.
[3]
Won-Ho Yang,et al.
Influence of the Hole Eccentricity in Residual Stresses Measurement by the Hole-drilling Method
,
2000
.
[4]
Chan-Gi Park,et al.
Determination of non-uniform residual stress by the hole drilling method
,
1998
.
[5]
Seok-Jin Kwon,et al.
Evaluation of Residual Stress for Thermal Damage of Railway Wheel Tread
,
2011
.