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Numerical Experiments on the Optimum Design and Location of a Passive Vibration Absorber Applied to Multi Degrees of Freedom System Under Base Excitation


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DOI: https://doi.org/10.15866/ireme.v16i5.21899

Abstract


Numerical experiments are used to investigate the optimal design parameters and the location of a passive vibration absorber and its application to reduce resonant vibration amplitudes of a base excited, discrete, Multi Degrees of Freedom (MDOF) vertical system. Attaching a passive vibration absorber (simple undamped resonator) to the system’s end mass (top mass) is preferable when dealing with the vibrations of multi degrees freedom systems. As the absorber is moved closer to the primary system's farthest end, the amplitude reduction results get better. The numerical analysis is less sensitive to slight variations in mass ratio than minor variations in the absorber’s natural frequency, according to perturbation analysis on a two degree of freedom system. Introducing damping to the used passive vibration absorber has no discernible effect on the absorber’s effectiveness.
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Keywords


Multi Degrees of Freedom System; Passive Vibration Absorber; Optimum Design; Location; MATLAB/Simscape; Numerical Experiments

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References


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