蒸気タービン翼根, 翼溝の接触解析技術と翼根形状最適化に関する研究

概要

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Recently, in order to improve power plant thermal efficiency, steam turbine blades have been used under the severe mechanical strength condition. In particular the blade root supports large centrifugal and vibrational forces. The optimum design for the root and groove shape of turbine blades must be performed in order to improve the mechanical reliability of turbine. In this paper, an effective method for solving this type of problem using sensitivity analysis based on FEM with linear programming is discussed. The optimal figure of the blade root and groove of which all peak stresses are reduced is obtained with this program system.
社団法人日本機械学会の論文
1997-01-25