Probabilistic analysis of bladed turbine disks and the effect of mistuning

Probabilistic progressive buckling of trusses

“…2 ' 3 In the recent past, NESSUS has been used for the analysis of Space Shuttle Main Engine (SSME) components. Representative examples include a probabilistic assessment of a mistuned bladed disk assembly 4 and an evaluation of the reliability and risk of a turbine blade under complex service environments. 5 Furthermore, NESSUS has also been used to computationally simulate and probabilistically evaluate a cantilever truss typical for space-type structures 6 and to quantify the uncertainties in the structural responses (displacements, member axial forces, and vibration frequencies).…”

Effects of Damping and Damping Mistuning on the Forced Vibration Response of Bladed Disks

“…A similar conclusion was reached by Srinivasan and Fabunmi (1984) and Ewins (1988) in connection with the mode shapes. Finally, Shah et al (1990) have allowed in their bladed disk model variations of the damping coefficients in addition to stiffness mistuning.…”