- 접촉피로에 의한 표면피팅의 유한요소 시뮬레이션
- ㆍ 저자명
- 이환우,김성훈,Rhee. Hwan-Woo,Kim. Sung-Hun
- ㆍ 간행물명
- 한국정밀공학회지
- ㆍ 권/호정보
- 2010년|27권 3호|pp.80-88 (9 pages)
- ㆍ 발행정보
- 한국정밀공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
A simple computational model for modeling of subsurface crack growth under cyclic contact loading is presented. In this model, it is assumed that the initial fatigue crack will initiate in the region of the maximum equivalent stress at certain depth under the contacting surface. The position and magnitude of the maximum equivalent stress are determined by using the equivalent contact model, which is based on the Hertzian contact conditions with frictional forces. The virtual crack extension method is used for simulation of the fatigue crack growth from the initial crack up to the formation of the surface pit due to contact fatigue. The relationships between the stress intensity factor and crack length are then determined for various combinations of equivalent contact radii and loadings.