Abstract A comprehensive investigation on the static and dynamic responses of a sphere located at elastic viscoelastic medium interfaces is performed in this study. First, mathematical models commonly used for predicting displacement an interface are presented their performances compared. After that, based finite element analyses, accurate model to predict valid different Poisson’s ratios small...

In this article, the H∞ optimization design of a hybrid vibration absorber (HVA), including both passive and active elements, for the minimization of the resonant vibration amplitude of a single degree-of-freedom (SDOF) vibrating structure is derived by using the fixed-points theory. The optimum tuning parameters are the feedback gain, the tuning frequency, damping and mass ratios of the absorb...

Contact time is one of the most important properties for inertial micro-switches. However, it is usually less than 20 μs for the switch with rigid electrode, which is difficult for the external circuit to recognize. This issue is traditionally addressed by designing the switch with a keep-close function or flexible electrode. However, the switch with keep-close function requires an additional o...

This article aims to popularize the methods for determining vibratory damping ratio, explain various mathematical and physical theorems related establishment of literal expressions. Vibration is an essential parameter reduce dynamic responses structures. The study aimed at its determination necessary safeguard buildings human lives during earthquake. Among main studied in this article, free vib...

The rigorous modeling of traveling loads on bridges in a dynamic regime is not an easy task as the load contributes to structural system with its mass and damping. In this paper, simplified approach for proposed. main simplification consists neglecting mass. validity proposed checked sensitivity analysis considering few realistic case-study bridges. ranges velocity traveling-force/bridge-weight...

Abstract Background Damping elements made of elastomer materials are used in almost every mechanical system to prevent damage components caused by impact-like excitations and the resulting high-frequency, large-amplitude oscillations. The dynamics these operating conditions exceed performance limits conventional experimental testing methods, impeding validated predictions damper’s transmission ...

A method of estimating damping parameters for multidegree-of-freedom vibration systems is outlined, involving a balance of dissipated and supplied energies over a cycle of periodic vibration. The power is formulated as the inner product between velocity and force terms, and integrated over a cycle. Conservative terms (mass and stiffness) drop out of the formulation. The displacement response an...