FATIGUE LIFE ESTIMATION OF TURBOMACHINERY BLADES
After a brief review of development of rotors and the need to perform life estimation of the modern machinery, this paper presents a comprehensive method of life estimation of advanced high speed rotating machinery concerning stress based, strain based and linear elastic fracture mechanics methods. A novel feature presented here includes a complete analytical procedure to determine a nonlinear damping model for material and friction effects without depending on costly experimental procedures. Using this nonlinear damping model, a method to determine resonant stress and stress distribution around the critical is also illustrated. The effect of acceleration on the blade resonant stress is included in the cumulative damage while crossing a critical speed. To help the designers speed up the simulation and assess life, a process simulation of all the above effects are integrated into one single platform and the way it works is illustrated.
J.S.Rao
Altair Engineering, India, Mercury 2B Block, 5th Floor Prestige Tech Park Sarjapur Marathhalli Outer Ring Road Bangalore 560 087
国际会议
The Fifth International Conference on VETOMAC-V(第五届振动工程及机械技术国际会议)
武汉
英文
1-19
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）