A study on two types of rolling cylinder vibration absorbers

Oleg Shiryayev, Nader Vahdati

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Mitigation of unwanted oscillations in structures induced by environmental and seismic loadings is an important problem in civil and mechanical engineering. Tuned mass dampers and dynamic vibration absorbers are widely used for mitigation of vibrations in various structures and systems. These devices usually represent a single degree of freedom mechanical oscillator connected to the main system. Vibration energy is transferred from the targeted vibration mode of the main system to the dynamic vibration absorber and dissipated in it, thereby reducing the amplitudes of motion and stresses experienced by the main system. A variety of designs for dynamic vibration absorbers and dampers have been developed over many decades. In general, they can be categorized as either employing an elastic restoring force, or gravitational pendulum types. Pendulum-based designs include hanging type and supported type. The supported type pendulum absorbers gained popularity due to their compactness, affordability, and simplicity of installation and maintenance. Examples of such devices include sliding pendulums, rocking block pendulums, track nonlinear energy sinks, unbalanced rolling spheres, and rolling ball pendulums. In this work we derive modeling equations and investigate the performance of two unidirectional devices, both of them incorporate a rolling cylinder. In one case the cylinder rolls inside a semicircular cavity, and in another case the cylinder rolls on a flat surface, while being restrained by an elastic element arranged in a vertical orientation. We present results of numerical investigations of the performance of these devices and compare them with the traditional translational spring-mass-damper type device.

Original languageBritish English
Title of host publication"Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021
EditorsEleonora Carletti, Malcolm Crocker, Marek Pawelczyk, Jiri Tuma
ISBN (Electronic)9788378807995
StatePublished - 2021
Event27th International Congress on Sound and Vibration, ICSV 2021 - Virtual, Online
Duration: 11 Jul 202116 Jul 2021

Publication series

Name"Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021
ISSN (Print)2329-3675

Conference

Conference27th International Congress on Sound and Vibration, ICSV 2021
CityVirtual, Online
Period11/07/2116/07/21

Keywords

  • Pendulum
  • Vibration absorbers
  • Vibration mitigation

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