scholarly journals Nonlinear Analysis and Experiments on Torsional Vibration of a Rotor with a Centrifugal Pendulum Vibration Absorber

2008 ◽  
Vol 2 (3) ◽  
pp. 715-726 ◽  
Author(s):  
Yukio ISHIDA ◽  
Tsuyoshi INOUE ◽  
Taishi KAGAWA ◽  
Motohiko UEDA
Keyword(s):  
Nonlinear Analysis ◽  
Torsional Vibration ◽  
Vibration Absorber ◽  
Centrifugal Pendulum Vibration Absorber

Torsional Vibration Suppression by the Roller Type Centrifugal Vibration Absorbers

2007 ◽  
Author(s):  
Yukio Ishida ◽  
Tsuyoshi Inoue ◽  
Tomohiko Fukami ◽  
Motohiko Ueda
Keyword(s):  
Torsional Vibration ◽  
Vibration Suppression ◽  
Vibration Absorber ◽  
Torsional Vibrations ◽  
Vibration Absorbers ◽  
Dynamical Characteristics ◽  
Centrifugal Pendulum Vibration Absorber ◽  
Automobile Engines ◽  
Long Time ◽  
The Difference

The centrifugal pendulum vibration absorber (CPVA) has been used for a long time as a method to suppress torsional vibrations. Recently, the roller type CPVA, that has a similar characteristic but simpler structure, has been investigated and started to be used in some automobile engines. However, the dynamical characteristics of the roller type CPVA are not known well. In this study, the nonlinear equations motion of the roller type CPVA are derived and their characterictics are investigated theoretically and experimentally. Especially, the difference between pendulum type CPVA and roller type CPVA is discussed from the viewpoint of the effect of a vibration suppression.

Hybrid Torsional Vibration Damper Incorporating Conventional Centrifugal Pendulum Vibration Absorber and Magnetorheological Damper

2014 ◽  
Author(s):  
Ehab Abouobaia ◽  
Rama Bhat ◽  
Ramin Sedaghati
Keyword(s):  
Torsional Vibration ◽  
Mr Damper ◽  
Analytical Investigation ◽  
Rotor System ◽  
Magnetorheological Damper ◽  
Vibration Absorber ◽  
Vibration Damper ◽  
Power Requirement ◽  
Rotor Systems ◽  
Centrifugal Pendulum Vibration Absorber

A hybrid torsional vibration damper is proposed in this study incorporating a conventional Centrifugal Pendulum Vibration Absorber (CPVA) and a Magnetorheological (MR) damper. While CPVAs are simple and reliable passive torsional vibration absorbers, their performance is limited to the designed tune conditions. MR dampers have recently received considerable attention due to their inherent fail-safe feature, low power requirement and capability to attenuate vibration under unpredictable environmental conditions. The present research aims at developing a novel hybrid torsional vibration damper combining conventional CPVA with the MR damper capable of suppressing torsional vibration at varying excitation frequencies. This research presents results from analytical investigation of rotor systems integrated with the proposed hybrid torsional vibration damper. The system under investigation consists of a rotor with attached hybrid torsional MR damper subjected to an external harmonic torque. The CPVA has been connected to the cylindrical housing of the MR damper. Different cases have been investigated including: 1- Rotor system without any damper, 2- Rotor system with only CPVA, 3- Rotor system with only torsional MR damper and 4- Rotor system with the hybrid torsional damper. Results for each case have been illustrated and compared against one another.

Chaos of Nonlinear Vibratory System With Single Well Potential

1995 ◽  
Author(s):  
Wei Zhang
Keyword(s):  
Nonlinear System ◽  
Torsional Vibration ◽  
Chaotic Motion ◽  
Chaotic Dynamics ◽  
Combustion Engine ◽  
Dynamical Behavior ◽  
Vibration Absorber ◽  
Vibratory System ◽  
Centrifugal Pendulum Vibration Absorber ◽  
Single Well

Abstract In this paper we study chaotic dynamics of nonlinear vibratory system under combined parametric and forcing excitations with single well potential. Especially we focus on chaos of a centrifugal pendulum vibration absorber. The centrifugal pendulum vibration absorber is an efficient device that is used to reduce torsional vibration in crank shaft of internal combustion engine. Because reduced dynamical model of the centrifugal pendulum vibration absorber is a nonlinear system, there is very rich dynamical behavior in this system. We use Meknikov’s method and numerical method to study chaotic dynamics of the centrifugal pendulum vibration absorber and discuss the route from bifurcations of T2 torus to chaotic motion.

Vibration Mode Structure of Cyclically Symmetric Centrifugal Pendulum Vibration Absorber Systems

2012 ◽  
Author(s):  
Chengzhi Shi ◽  
Robert G. Parker
Keyword(s):  
Degree Of Freedom ◽  
Vibration Absorber ◽  
Vibration Modes ◽  
Rotational Degree ◽  
Cyclic Symmetry ◽  
Mode Structure ◽  
Vibration Properties ◽  
Centrifugal Pendulum Vibration Absorber ◽  
Gyroscopic Effects ◽  
Modal Vibration

This work develops an analytical model of centrifugal pendulum vibration absorber systems with equally-spaced, identical absorbers and uses it to investigate the structure of the modal vibration properties. The planar model admits two translational and one rotational degree-of-freedom for the rotor and a single arclength degree-of-freedom for each absorber. The gyroscopic effects from rotor rotation are taken into account. Examination of the associated eigenvalue problem reveals well-defined structure of the vibration modes resulting from the cyclic symmetry of the absorbers. The vibration modes are classified into rotational, translational, and absorber modes. Characteristics of each mode type are analytically proved.

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