The concept of vibration damping of the variable mass assembly

Abstract

An innovative method of damping vibrations using a variable mass assembly will be presented in this article. The concept was based on a physical pendulum model consisting of two connected elements. Mass exchange between the upper and lower member of the pendulum is modelled as a gravity a fluid flow. With the passage of time, the mass of the upper member of pendulum decreases and the mass of the lower member of pendulum increases. It is assumed preserve the mass of the whole system. The article will also present the application possibilities and a review of currently used vibration dampers.

Proposition of a structural health monitoring model for a concept of an innovative variable mass pendular tuned mass damper

“…The possible utilization of the variable mass phenomenon for vibration-damping purposes was previously studied and proved the concept's validity. A theoretical model of a double pendulum was analyzed as an alternative approach for dynamics control in [17] [19], continued in [18], and also independently in [20]. These separate researches conducted on chaotic systems led to the conclusion that the mass redistribution for a system in motion provides additional damping and thus reduces the vibration amplitudes.…”

Oscillator with Time-Variable Degree of Nonlinearity: Theory and Application in Aging of Polymer Composite Structure

“…In addition, variable mass dynamics is suitable for designing new vibration-damping equipment. Let us mention some of them: a variable mass negative stiffness dynamic vibration absorber [8], a non-piston MR suspension rod for variable mass systems [9], the variable mass pendulum type assembly for damping [10], etc. In [11], the self-adjustable tuned mass damper with variable mass is studied.…”