This paper addresses the dynamics of locally-resonant sandwich beams, where multi-degree-of-freedom viscously-damped resonators are periodically distributed within core matrix. Using an equivalent single-layer Timoshenko beam model coupled with mass-spring-dashpot subsystems representing resonators, two solution methods presented. The first is a direct integration method providing exact frequen...

I The article presents an analytical solution to the problem of small oscillations a liquid in rigid tank with elastic baffle. This mechanical system is model for various oil tankers. frequency transcendental equation obtained closed form under certain assumptions, left side which meromorphic function infinite number simple poles. result achieved by expanding homogeneous into series terms eigen...

In this paper, dynamic analyses and field measurements of a tied arch railway bridge is presented. Excessive vibrations of the hangers were obtained, caused by resonance during train passages. The resulting increase of the stress level and number of stress cycles were shown to decrease the fatigue service life significantly. The most critical section is a threaded turnbuckle connection of the h...

This paper aims at investigating the effect of thermal stress on free linear vibrations of cables. An analytical model extending Irvine’s theory to thermoelasticity is proposed. In addition to the sag-extensibility parameter, this model yields a second dimensionless independent parameter related to the temperature change. Some general two-dimensional contour plots are presented giving the relat...

In the measurement of the amplitude of vibration of objects, holographic imaging techniques usually involve fringe counting; because of the limited resolution of the images, measurements of large amplitudes are not accessible. We demonstrate a technique that suppresses the necessity of fringe counting--frequency sideband imaging--where the order of the sideband is considered a marker of the amp...