Vibration control for a pendulum system by moving the pivot and the weight : An experimental investigation

2002 ◽  
Vol 2002 (0) ◽  
pp. 72
Author(s):  
S. Kai ◽  
K. Yoshida ◽  
Y. Nishimura
Keyword(s):  
Experimental Investigation ◽  
Vibration Control ◽  
Pendulum System

Experimental Investigation of the Dynamics and Bifurcations of an Impacting Spherical Pendulum

1995 ◽  
Author(s):  
S. Garza ◽  
A. Ertas
Keyword(s):  
Experimental Investigation ◽  
Natural Frequency ◽  
Large Deflection ◽  
Type I ◽  
Type Ii ◽  
Spherical Pendulum ◽  
Pendulum System ◽  
Parametric Forcing

Abstract An experimental investigation was performed to determine the dynamics of an inverted, impacting spherical pendulum with large deflection and vertical parametric forcing. The pendulum system was studied with nine different bob and two different base configurations, for twenty times the natural frequency at shaker powers of 0 to 125 mm-hz. It was found that sustained conical motions did not naturally occur. The spherical pendulum system was analyzed to determine under what conditions the onset of Type I and sustainable Type II responses occurred.

scholarly journals Using nonlinear jumps to estimate cubic stiffness nonlinearity: An experimental study

2016 ◽  
Vol 230 (19) ◽  
pp. 3575-3581 ◽  
Author(s):  
Bin Tang ◽  
MJ Brennan ◽  
V Lopes ◽  
S da Silva ◽  
R Ramlan
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Vibration Control ◽  
Theoretical Basis ◽  
Mechanical Design ◽  
Type System ◽  
Restoring Force ◽  
Surface Method ◽  
System Properties ◽  
Cubic Stiffness

Attempts are being made to improve mechanical design by using nonlinearity rather than eliminating it, especially in the area of vibration control and in energy harvesting. In such systems, there is a need to both predict the dynamic behavior and to estimate the system properties from measurements. This paper concerns an experimental investigation of a simple identification method, which is specific to systems in which the behavior is known to be similar to that of a Duffing-type system. It involves the measurement of jump-down frequencies and the amplitudes of displacement at these frequencies. The theoretical basis for the method is briefly described as, is an experimental investigation on a beam-shaker system. The results are comparable with those determined by the restoring force surface method. The method described in this article has the advantage that the data can be collected and processed more easily than the restoring force surface method and can be potentially more suitable for the engineering community than existing identification measures.

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