...Shreyas Hegde; Jonathan D. Inge; Robert Kielb This paper is a continuation of previous papers by the authors that focuses on predicting the mistuned embedded rotor blade forced response. The compressor under consideration is a part of a 3.5stage rig located at Purdue University. Previously...

...Anthony Tacher; Fabrice Thouverez; Jason Armand Intentional frequency mistuning referred to as detuning is known to be an effective mean to prevent aeroelastic flutter in gas turbines. The Coriolis effect, which is usually discarded, can reduce the mistuning effects and therefore compromise...

...Alex Nakos; Bernd Beirow; Arthur Zobel The radial turbine impeller of an exhaust turbocharger is analyzed in view of both free vibration and forced response. Due to random blade mistuning resulting from unavoidable inaccuracies in manufacture or material inhomogeneities, localized modes...

... a robust methodology to account for the additional effect of mistuning remains a big challenge in the community. In this paper, the structure is mistuned through the friction coefficient of the dampers and not by altering its geometry, as is usually done in the literature. First, assuming a cyclic...

...Samuel Quaegebeur; Benjamin Chouvion; Fabrice Thouverez; Loic Berthe Cyclic structures such as turbomachinery present material and geometrical variations between sectors. These discrepancies are called mistuning and break the cyclic symmetry of the structure. Computing the forced response...

... in the frequency range [4775,7958] Hz were considered for the excitation. In both of these cases, the optimum mistuning pattern was found to be all B, which is readily recovered by the subspace algorithm. A reduction of the damping to 0.1% of critical was then performed, and the repeated analysis led to the full...