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L. Ercoli

Universidad Nacional del Sur

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Applied Acoustics | 1987

WHIRLING OF FLEXIBLE SHAFTS WITH INTERMEDIATE SUPPORTS

P.A.A. Laura; S. La Malfa; L. Ercoli; Víctor H. Cortínez

Abstract The present paper deals with an approximate solution of the title problem using the Rayleight-Schmidt procedure. It is shown that rotating shafts of non-uniform cross section can be analyzed in a straightforward manner. Experimental and analytical results are obtained for the case of uniform shafts with intermediate supports, and good engineering agreement is shown to exist.

The Shock and Vibration Digest | 1997

A review of studies dealing with dynamic stiffening of thin, elastic plates

P.A.A. Laura; L. Ercoli; S. La Malfa; D. Pasqua

Several studies have shown that removing mass from a plate has the same, or even greater effect, as losing rigidity. The result is a lighter structure with an equal or higher fundamental frequency of transverse vibration; in other words, dynamic stiffening has been achieved.

Applied Mechanics Reviews | 1991

Analytical and Experimental Investigation on a Vibrating Timoshenko Beam Clamped at One End and Carrying a Finite Mass at the Other

P.A.A. Laura; R.E. Rossi; L. Ercoli; S. La Malfa

An exact solution of the title problem is presented. Experimental results are obtained and it is shown that they are in reasonably good agreement with the analytical predictions.

Journal of Sound and Vibration | 1983