scholarly journals Experimental investigation of the transverse nonlinear vibration of an axially travelling belt

2016 ◽  
Vol 18 (8) ◽  
pp. 4885-4900
Author(s):  
En-Wei Chen ◽  
Hui-Hui Lin ◽  
Neil Ferguson
Keyword(s):  
Experimental Investigation ◽  
Nonlinear Vibration

Experimental Investigation of Nonlinear Vibration Absorbers

1999 ◽  
Author(s):  
Gregory S. Agnes
Keyword(s):  
Experimental Investigation ◽  
Nonlinear Systems ◽  
Nonlinear Vibration ◽  
Chaotic Behavior ◽  
System Response ◽  
Hopf Bifurcations ◽  
Vibration Absorbers ◽  
Nonlinear Case ◽  
Nonlinear Absorber ◽  
Poor Absorption

Abstract An experimental investigation of the performance of nonlinear vibration absorbers on nonlinear systems was performed. The results verify the previous analytical findings of the authors. Initially, for low excitation, the nonlinear absorber gives better results than the nonlinear case. However as the forcing level is increased, the system response undergoes a series of Hopf bifurcations leading to chaotic behavior and poor absorption of the vibrations.

Experimental Investigation of Pedestal Looseness in a Rotor-Bearing System

2009 ◽  
Vol 413-414 ◽  
pp. 599-605 ◽  
Author(s):  
Wen Xiu Lu ◽  
Fu Lei Chu
Keyword(s):  
Experimental Investigation ◽  
Nonlinear Vibration ◽  
Nonlinear Response ◽  
Harmonic Component ◽  
Vibration Characteristics ◽  
Experimental Setup ◽  
Rotor Bearing ◽  
Harmonic Components ◽  
Bearing System

An experimental setup of rotor-bearing system is installed and vibration characteristics of the system with pedestal looseness are investigated. The pretightening bolt between the bearing house and pedestal is adjusted to simulate the pedestal looseness fault. The vibration waveforms, spectra and orbits are used to analyze the nonlinear response of the system with pedestal looseness. Different parameters, including speed, looseness gap, imbalance mass and disk position are changed to observe the nonlinear vibration characteristics. The experiments show that the system motion generally contains the 1/2X fractional harmonic component and multiple harmonic components such as 2X, 3X, etc. Under some special conditions, the pedestal looseness occurs intermittently, that is, occurs in some periods and doesn’t in other periods.

scholarly journals Nonlinear vibration localisation in a symmetric system of two coupled beams

2020 ◽  
Author(s):  
Filipe Fontanela ◽  
Alessandra Vizzaccaro ◽  
Jeanne Auvray ◽  
Björn Niedergesäß ◽  
Aurélien Grolet ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Nonlinear Vibration ◽  
Piecewise Linear ◽  
Nonlinear Oscillators ◽  
Symmetric System ◽  
Weakly Coupled ◽  
Coupled Nonlinear Oscillators ◽  
Coupled Beams ◽  
Two Degree Of Freedom ◽  
Piecewise Linear Stiffness

Abstract We report nonlinear vibration localisation in a system of two symmetric weakly coupled nonlinear oscillators. A two degree-of-freedom model with piecewise linear stiffness shows bifurcations to localised solutions. An experimental investigation employing two weakly coupled beams touching against stoppers for large vibration amplitudes confirms the nonlinear localisation.

Do moods and expectancies have unique or interactive effects?: An experimental investigation

2014 ◽  
Author(s):  
Shane Close ◽  
Victoria Adkins ◽  
Kandice Perry ◽  
Katheryn Eckles ◽  
Jill Brown ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Interactive Effects
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