| 제목 |
공기압축기 로터 어셈블리 형상의 개선 설계와 피로수명 예측 |
| 분야 |
차체 및 구조 안전 |
| 언어 |
Korean |
| 저자 |
라쉬가캄카난게왈랄라리타(한국기술교육대학교), 이현희(한국기술교육대학교), 박소윤(한국기술교육대학교), 김태경(한국기술교육대학교), 이광주(한국기술교육대학교) |
| Key Words |
Air compressor(공기 압축기), Impeller(임펠러), Thrust disk(쓰러스트 디스크), Mean stress correction(평균응력 보정), Fatigue failure(피로 파괴) |
| 초록 |
Shape design improvement and fatigue life prediction of the air compressor rotor assembly in a fuel cell electric vehicle were studied. The rear disk thickness of the impeller was selected in order to minimize the maximum stress, and the relative displacement was closest to zero in order to avoid contact with the other components. Sensor sleeve length, thrust disk rear length, and sensor sleeve interference fit depth were selected in order to maximize the smallest safety factor of constituting components. The fatigue life of an existing air compressor rotor assembly was tested and analyzed. Among the methods to correct mean stress, the analysis result with Goodman’s correction method was the closest to the test result. The fatigue life of an air compressor rotor assembly under development was predicted by using Goodman’s correction method with optimal values of all design variables. |
| 원문(PDF) |
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