한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2010년도 춘계학술대회 논문집
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- Pages.615-620
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- 2010
철도차량 제동디스크 소재 열충격 실험에 대한 피로해석
A Fatigue Analysis of Thermal Shock Test in Brake Disc Material for Railway
- 발행 : 2010.06.10
초록
During braking of railway vehicles the repetitive thermal shock leads to thermal cracks on disc surface, and the lifetime of brake disc is dependent on the number of trimming works for removing these thermal cracks. Many tries for development of high heat resistant brake disc to extend the disc life and to warrant reliable braking performance has been continued. In present study, we carry out the computational fatigue analysis for thermal fatigue test in three candidate materials which were made to develop new high heat resistant material. Using FEM, we simulate thermal fatigue test in three candidate materials and conventional disc material. We then estimate the number of cycle to thermal crack initiation based on data from mechanical fatigue tests, and the results are compared with each material. For each material, the correction factor for
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