Vibration response analysis of mistuned bladed disk consisting of directionally solidified blade

Abstract

Recently, DS (Directionally Solidified) and SC (Single Crystal) alloys have been widely applied for gas turbine blades instead of CC (Conventionally Casting) alloys. In this study, the mistuning analysis of the bladed disk consisting of DS blades is carried out, considering the deviations of the elastic constant and the crystal angle of the DS blade. The FMM is used to analyze the mistuned bladed disk. The maximum amplitude of the mistuned bladed disk of the DS blade is estimated by the Monte Carlo simulation combining with the response surface method, and the calculated results are compared with those of the CC blade.