Abstract
The vane used in a low pressure end of steam turbine is usually fixed to shroud and casing by welding both ends. In such a vane structure, the damping in operation is comprised of the material damping and the aerodynamic damping, because the structural damping is very small. In this paper, the vane is modeled by the uniform beam fixed at both ends, and the effect of the material damping on the vane flutter is studied. The critical material damping for vane flutter and the allowable vibratory stress are calculated and compared for the solid vane and the hollow vane.
