S.V. Modak

TL;DR: A detailed comparison of the inverse eigensensitivity method and the response function method of analytical model updating on the basis of computer simulated experimental data is given for studying the convergence of the two methods and the accuracy with which they predict the corrections required in a finite element model.

TL;DR: In this paper, the influence of internal rotor material damping and fluid film forces on the modal behavior of a flexible rotor-shaft system was studied, and it was shown that correct estimation of internal friction, in general, and the journal bearing coefficients at the rotor spin-speed are essential to accurately predict the rotor dynamic behaviour.

TL;DR: In this paper, a harmonic elimination method was proposed to eliminate the harmonics from the randomdec signatures of a beam and a more complex F-shape structure, which resembles in shape to the skeleton of a drilling or milling machine tool.

TL;DR: In this paper, a model updating technique is used to update a finite element model of a structure so that an updated model predicts the dynamics of a structural structure more accurately, and the suitability of updated models for predicting the effect of structural modifications is evaluated by some computer and laboratory experiments.