Study and Analysis of Anti Vibratory Passive and Active Methods Applied to Complex Mechanical System

Abstract

This paper studies problematic of a mechanical system composed of different coupled parts submitted to a high speed shock and proposes analysis of anti vibratory passive and active methods based on an experimental and theoretical coupled approach. After a shock, different parts of the system oscillate. If one of them is excited at a particular frequency, such as its proper frequency, important oscillations appear and can lead to the deterioration of the system by introducing important stresses. In this paper, we propose an analysis in order to understand this kind of problem and what we can do to avoid it. Firstly, we discuss problematic and we expose the studied system. In a second time, we develop two approaches of modeling that allow us to understand the phenomenon by carrying out numerical simulations. Then cross checking of model is completed via experimental study on drop test bench. Passive minimization method of vibrations based on experimental and theoretical coupled approach is exposed. Finally, a comparative analysis of different methods of control and experimental results of controlled system are presented.

A Study on Design and Analysis of Hybrid Vibration Damper with Energy Harvesting and Optimal Damping Effect

“…In the following, we present results of experiments of hybrid system for a given input speed. The PID controller with minimization of acceleration of the upper sprung mass (m s ) is chosen in order to determine the target control force [10]. Moreover, the controller starts only at the impact of the system on the ground.…”

Grazing bifurcation analysis of a relative rotation system with backlash non-smooth characteristic

“…[23] The anti vibratory passive and active methods were applied to complex mechanical systems. [24] The nonlinear free vibrations of the electromechanical integrated toroidal drive system were investigated using the perturbation method. [25] However, all the systems studied in the above-mentioned literatures are smooth dynamical systems, in which the nonsmooth factors are neglected.…”