Analysis Of Vibratory Stress Of Integral Shroud Blade For Mechanical Drive Steam Turbine.
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The advanced integral shroud blade (ISB) structure has been developed to improve the reliability and thermal efficiency of mechanical drive steam turbines. This advanced ISB has been applied to not only the control stage blades but also the intermediate stage blades. Turbines using these advanced blades have been successfully operated. This paper presents the analysis method to calculate the vibratory stresses of the ISB caused by the stage interaction force and the shock load. The vibration response characteristics are explained and comparisons are made to the advanced ISB structure and the conventional grouped blade structure, using the calculated results. Additional verification test results to confirm the validity of the proposed analysis method are also shown.
Kaneko, Yasutomo; Mori, Kazushi; Miyawaki, Toshihiro; Hata, Satoshi (2007). Analysis Of Vibratory Stress Of Integral Shroud Blade For Mechanical Drive Steam Turbine.. Texas A&M University. Turbomachinery Laboratories. Available electronically from