유한요소법을 이용한 조건에 따른 마모 영역별 2차원 프레팅 마모 해석

다국어 초록 (Multilingual Abstract)

In nuclear power plant, fretting wear, caused by flow induced vibration (FIV), can make a serious problem in a U-tube bundle in steam generator. In this study, finite element analysis of the fretting wear on the secondary side of the steam generator was investigated which arises between U-tubes and their supports or foreign objects. Using finite element method, two-dimensional models with cylindrical or plate supports were adopted to investigate the fretting wear problems. As boundary conditions, various combinations of loads are applied to verify different fretting mechanisms, such as stick only, stick-slip and gross slip wear. For this purpose, four different load conditions are considered and in the finite element analysis, ABAQUS are used with the program which is developed to calculate wear depth and modify input files at each cycle. As a result, regions for each wear mechanism are found and fretting wear map is constructed, which can be used as a reference or criterion for fretting wear experiments.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 유한요소해석
• 3. 결과 및 토의
• 4. 결론
• 참고문헌