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축대칭 등가 모델을 활용한 터빈 휠의 퓨즈 섹션부 파손 속도 예측 Prediction of Burst Speed on the Fuse Section of Turbine Wheel Using Equivalent Axisymmetric Model

김동현, 최복록
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한국기계기술학회지 (韓國機械技術學會誌)
제26권 제6호 (2024.12)
pp.1214-1219
한국기계기술학회 (Korean Society of Mechanical Technology)
초록

The turbine wheel plays a crucial role in operating turbines, and with recent advancements in technology, the performance requirements for turbine wheels have significantly increased. Consequently, it is essential to predict failure speeds, as turbine wheels must maintain high stability and reliability under harsh operating conditions. In this study, only the centrifugal loads generated by rotati were considered, excluding conditions such as temperature and pressure. A round-shaped fuse section was applied to the turbine wheel, and the stresses induced by variations in shape were analyzed to predict failure speeds. The results obtained using the Hallinan criteria were compared with the results from finite element analysis (FEA) to validate the predicted failure speeds, showing good agreement between the two methods.

키워드
터빈 휠퓨즈 섹션파손 속도유한요소해석축대칭 모델 Turbine wheelFuse sectionBurst speedFinite element analysisAxisymmetric model
목차
Abstract
1. 서 론
2. 유한요소 해석
    2.1 터빈 휠의 형상 및 재료 물성
    2.2. 유한요소 모 델
    2.3 하중 및 구속조건
    2.4 유한요소 해석 및 파손 속도 예측
3. 파손 속도 비교 및 검토
    3.1 Burst speed 계산식
    3.2 Hallinan Criteria과 FEA 파손 속도 비교
4. 결 론
References
저자
  • 김동현(student , the department of automotive engineering, Graduate School, Gangneung-Wonju National Univ.) | D. H. KIM
  • 최복록(Professor, Gangneung- Wonju National University, School of Mechanical & Automotive Engineering) | B. L. CHOI Corresponding author