Nonlinear Aspects of the Performance of Centrifugal Pendulum Vibration Absorbers

Newland, David

doi:10.1115/1.3670529

Cited by 88 publications

(50 citation statements)

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“…Based on purely linear considerations, the order of the path for a CPVA should be tuned to the frequency of the disturbance torque, that is, nJ G "n. In the linear, undamped case this makes the absorber perfectly e!ective, since the rotor vibrations are completely eliminated. However, the non-linear e!ects that arise from the frequency}amplitude dependence of the absorber can be handled by incorporating a small level of intentional linear mistuning on the path, a technique implemented in practice [14].…”

Section: General Path Representationmentioning

confidence: 99%

Performance and Dynamic Stability of General-Path Centrifugal Pendulum Vibration Absorbers

Alsuwaiyan

Shaw

2002

Journal of Sound and Vibration

122

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Section: General Path Representationmentioning

confidence: 99%

Performance and Dynamic Stability of General-Path Centrifugal Pendulum Vibration Absorbers

Alsuwaiyan

Shaw

2002

Journal of Sound and Vibration

122

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“…The nonlinear behavior of these devices was first pointed out by Den Hartog (127) , who noted that the frequency shift from softening nonlinear effects, arising from the circular path followed by the absorber mass, would be detrimental to absorber function. These properties were thoroughly fleshed out and translated into design recommendations by Newland (128) , whose intentional over-tuning recomendations are still in use for designing some absorber systems. More recently, these absorbers have been designed such that they follow noncircular paths that alleviate some of the unwanted nonlinear effects.…”

Section: Journal Of System Design and Dynamicsmentioning

confidence: 99%

A Review of Nonlinear Dynamics of Mechanical Systems in Year 2008

Shaw

Balachandran

2008

JSDD

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In this article, we provide an overview of a selection of topics of current interest in nonlinear dynamics and vibrations of mechanical systems. Specifically, we cover the traditional topics of structural dynamics, rotating systems, vibration control, vehicle dynamics, and machining, as well as some topics that have emerged more recently, namely micro-and nano-electromechanical systems, piecewise smooth systems, and structural health monitoring and system identification. In the introductory and closing sections, we offer our perspective on the state of affairs in nonlinear dynamics and its utility in the study of mechanical systems.

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“…It has long been known that intentional mistuning is useful for the case of torsional vibration absorber systems. In centrifugal pendulum vibration absorbers (CPVAs) with circular paths, intentional mistuning of the absorbers' paths, help to avoid nonlinear jump behavior [13] and other types of nonlinear instabilities [10]. The following numerical example will clarify these findings.…”

Section: Discussionmentioning

confidence: 97%

Localization in Multiple Nearly-Identical Tuned Vibration Absorbers

Alsuwaiyan¹

2013

IJET

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The forced vibration of multiple nearly identical translational vibration absorbers is considered. Localization, where the amplitudes of vibration of a group of the absorbers can become relatively large as compared to those of the corresponding perfectly tuned system is investigated. In this work, imperfections amoung the absorbers are allowed and brought into the analysis through the stiffnesses of the absorbers' springs. Steady-state analysis of the mathematical model is used to obtain the results. Results, which focus on translational absorber systems, are found to be consistent with previous results obtained for torsional vibration absorbers. It is found that strengths of the localized responses depend on the levels of imperfections, the relative imperfections among absorbers, and the absorbers' damping. Localization is shown to exist in the undamped multiple nearly-identical vibration absorbers system, or more generally, in the system where the ratio of the level of absorbers' damping to the level of imperfections in the absorbers is small. It is also shown that localized responses can be effectively avoided by introducing some intentional mistuning in the absorbers' stiffnesses. This mistuning should be small in absolute magnitude in order not to reduce the absorbers' performance and should be large when compared to the absorbers' imperfections.

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Nonlinear Aspects of the Performance of Centrifugal Pendulum Vibration Absorbers

Cited by 88 publications

References 0 publications

Performance and Dynamic Stability of General-Path Centrifugal Pendulum Vibration Absorbers

Performance and Dynamic Stability of General-Path Centrifugal Pendulum Vibration Absorbers

A Review of Nonlinear Dynamics of Mechanical Systems in Year 2008

Localization in Multiple Nearly-Identical Tuned Vibration Absorbers

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