Browse > Article
http://dx.doi.org/10.5139/JKSAS.2002.30.6.084

Thermo-Mechanical Stress Analysis of Power Generation Turbine Blades  

Kim, Jong-Un (한국항공대학교 항공기계공학과 대학원)
Lee, Soo-Yong (한국항공대학교 항공우주 및 기계공학부)
Park, Jung-Sun (한국항공대학교 항공우주 및 기계공학부)
Lee, An-Sung (한국기계연구원 구조시스템연구부 회전체연구그룹)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.30, no.6, 2002 , pp. 84-91 More about this Journal
Abstract
Temperature distribution in the GTD111 turbine blade used in power plaints is calculated by heat transfer analysis. Linear stress analysis of the turbine blade is also carried out under thermal loads and centrifugal forces. The numerical results of steady state heat transfer analysis slow that high temperature distribution occurs at the leading edge and tip section of the blade. The thermal stress result indicates that the equivalent stress at the tip of the pressure surface is higher than other sections of the blade. Maximum centrifugal stresses without the thermal effect occurs at the front of the fir tree. From the thermal-centrifugal stress analysis, maximum equivalent stress occurs at the fir tree. Stresses applied by the thermal loads and centrifugal forces are less than the yield stress. The GTD111 turbine blade is safe to be used in the power plants.
Keywords
Turbine Blade; Heat Transfer; Thermal Stress; Centrifugal Stress; Yield Stress;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Daleo, J. A, Wilson, J. R., "GTD111 Alloy Material Study," Journal of Engineering for Gas Turbine and Power, Vol 120, pp.375 - 382, April, 1998.   DOI   ScienceOn
2 Daleo, J. A, Ellison, K. A, Woodford, D. A, "Application of Stress Relaxation Testing Metallurigical Life Assessment Evaluation of GTD111 Alloy Turbine Buckets," Journal of Engineering for Gas Turbine and Power, Vol 121, pp.129 -137, January, 1999.   DOI   ScienceOn
3 임종순, 허승진, 전경렬, 이규봉, 유영면, "발전용 터빈 로우터의 수명예측을 위한 열응력 해석," 대한기계학회논문집, 제14권 제2호, pp.276-287, 1990.
4 전재영, "파괴 및 피로 해석을 통한 터어빈 로우터의 운전 수명계산(I)," 대한기계학회논문집, 제11권 제4호, pp.537-548, 1987.
5 Incropera, Frank, P., DeWitt, David P., Fundamentals of Heat and Mass Transfer, 4th Ed., John Wiley & Sons, Inc., 1996.
6 Woodford, David A "Creep Strength and Fracture Resisstance of Directionally Solidified GTD111," The Minerals, Metal & Materials Society, pp.353 - 357, 1996.