Investigation on effect of joint clearance on dynamics of four-bar mechanism

As a result of design, manufacturing and assembly processes or a wear effect, clearances are inevitable at the joints of mechanisms. In this study, dynamic response of mechanism having revolute joints with clearance is investigated. A four-bar mechanism having two joints with clearance is considered...

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Bibliographic Details
Published in:Nonlinear dynamics 2009-10, Vol.58 (1-2), p.179-198
Main Authors: Erkaya, Selçuk, Uzmay, İbrahim
Format: Article
Language:English
Subjects:
Automotive Engineering
Classical Mechanics
Clearances
Control
Dynamic response
Dynamical Systems
Engineering
Genetic algorithms
Journal bearings
Mechanical Engineering
Neural networks
Original Paper
Shaking
Vibration
Wear mechanisms
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Summary:As a result of design, manufacturing and assembly processes or a wear effect, clearances are inevitable at the joints of mechanisms. In this study, dynamic response of mechanism having revolute joints with clearance is investigated. A four-bar mechanism having two joints with clearance is considered as a model mechanism. A neural network was used to model several characteristics of joint clearance. Kinematic and dynamic analyses were achieved using continuous contact mode between journal and bearing. A genetic algorithm was also used to determine the appropriate values of design variables for reducing the additional vibration effect due primarily to the joint clearance. The results show that the optimal adjusting of suitable design variables gives a certain decrease in shaking forces and their moments on the mechanism frame.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-009-9470-7