Although the incidence of floor vibration problems appears to be on the rise, the use of mechanical damping devices to control vibrations is limited. In a recent survey of vibration control methods, Murray reports that passive-mechanical damping methods, including viscous damping, visco-elastic damping, and tuned-mass dampers, have often gone untried outside the laboratory or have had marginal ...

The effect of using elastic glue in between a timber construction’s two floor layers – gypsum board and particle board – was investigated. In a new timber based building, the impact sound insulation was reduced by 2 dB when elastic glue was introduced in the production. To find out the long-term effects, six different elastic glues was involved in a laboratory test in which layers of floor plas...

This paper considers how forces are produced by surface curvature e ects in systems where an object B is kinematically immobilized to 2nd order by nger bodies A1; : : : ;Ak. A paradox is used to demonstrate that the conventional rigid body idealization is insu cient to explain how these contact forces are generated. In order to explain the paradox, a class of con gurationspace based elastic def...

Conclusions The present study has investigated the problem of the elastic response of a generic space vehicle with degraded joints. The steppedbeam formulation based on elementary beam theory is employed for extracting modal parameters of a normalized generic space vehicle. Next, the modal superposition principle is used with a low damping value for obtaining the elastic response of the vehicle...

We experimentally study the nonlinear fluid damping of a rigid but elastically mounted pitching wing in absence freestream flow. The dynamics elastic mount are simulated using cyber-physical system. perturb and measure coefficient from damped oscillations over large range frequencies, amplitudes, pivot locations sweep angles. A universal scaling is proposed to incorporate all these parameters. ...

This paper considers the influence of transitional modes movement (acceleration, braking) a multi-link vehicle on vibration protection transported non-fixed or partially fixed cargoes. The impact phenomenon, in this case, can be strengthened by existence coupling mechanisms between links vehicle. To reduce such horizontal loads, it is advisable to use elements with viscoelastic damping devices ...

The aim of the work is to scientifically substantiate a way improve technical, economic and agrotechnological performance indicators machine-tractor units, compiled on basis traction power equipment category 1.4, main technological operations in cultivation various crops by reducing level dynamic processes their connections. It established that elastic damping mechanism with nonlinear character...

A cam driving a lumped inertia through a massless, elastic, slider-crank fol­ lower linkage with two concentrated masses located at the pin joints is considered. An iterative procedure taking the elasticity, damping, and changing geometry of the linkage into account is developed for synthesizing the cam profile to produce a desired output motion at a given design speed. The steady state solutio...