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Modeling and simulation of joint clearance effects on mechanisms having rigid and flexible links

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Abstract

In this study, kinematic and dynamic characteristics of a planar four-bar mechanism having joint clearance and link flexibility are investigated. Assuming that joint clearance as a virtual massless link, artificial clearances are developed at crank-coupler and coupler-follower joints. Contact model in joints with clearance is established using the nonlinear spring-damper model and the friction effect is considered using the Coulomb friction model. Then the simulation is implemented and the kinematic and dynamic characteristics of model mechanism are investigated. The computational methodology can predict the effects of clearance on planar mechanism having rigid and flexible links. The results are evaluated for the case of stationary phase, and naturally show that extreme values occur in output of the mechanism with clearances. Due primarily to the suspension effect of the flexible link, values of these peaks in the flexible mechanism decrease relative to that of the rigid mechanism. In addition, the flexibility has a significant effect on the vibration response of the mechanism with joint clearance.

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Correspondence to Selçuk Erkaya.

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Recommended by Editor Yeon June Kang

Selçuk Erkaya graduated from Mechanical Engineering Department at Erciyes University in 2001. He received M.Sc. and Ph.D. degrees from the same university. He currently works at Mechatronics Engineering Department at Erciyes University. His research areas are mechanism and machine theory, noise and mechanical vibrations, neural networks and optimization, robust design of mechanical systems.

İbrahim Uzmay graduated from Mechanical Engineering Department at Yildiz Technical University in 1978. He received M.Sc. and Ph.D. degrees from Yildiz and Istanbul Technical Universities, respectively. He currently works at Mechanical Engineering Department at Erciyes University. His research areas are mechanism and machine theory, noise and mechanical vibrations, Robots and control.

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Erkaya, S., Uzmay, İ. Modeling and simulation of joint clearance effects on mechanisms having rigid and flexible links. J Mech Sci Technol 28, 2979–2986 (2014). https://doi.org/10.1007/s12206-014-0705-2

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  • DOI: https://doi.org/10.1007/s12206-014-0705-2

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