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Effects of play and inerter nonlinearities on the performance of Tuned Mass Damper
Last modified: 2017-05-29
Abstract
In this paper we analyze the dynamics of tuned mass dampers with inerters.
In the beginning, we describe the influence of inertance value with
respect to the overall mass of the damping device. For further analysis
we pick 3 practically significant cases - each corresponding to different
composition of tuned mass damper inertia. Then we focus on the effects
caused by different types of inerters' nonlinearities. Viscous damping,
dry friction and play in the inerter gears influence the dynamics of the
tuned mass damper and affect its damping efficiency. Finally, we examine
the dynamics of the model that incorporates all of these factors and
propose its simplification which is genuine but more convenient. Our
results show how to adjust the inerter type and the parameters depending
on our needs and intended application. The knowledge on how to model
the behaviour of tuned mass dampers with inerters will be of practical
use to engineers working with mechanical dampers.
In the beginning, we describe the influence of inertance value with
respect to the overall mass of the damping device. For further analysis
we pick 3 practically significant cases - each corresponding to different
composition of tuned mass damper inertia. Then we focus on the effects
caused by different types of inerters' nonlinearities. Viscous damping,
dry friction and play in the inerter gears influence the dynamics of the
tuned mass damper and affect its damping efficiency. Finally, we examine
the dynamics of the model that incorporates all of these factors and
propose its simplification which is genuine but more convenient. Our
results show how to adjust the inerter type and the parameters depending
on our needs and intended application. The knowledge on how to model
the behaviour of tuned mass dampers with inerters will be of practical
use to engineers working with mechanical dampers.