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

Erkaya S., UZMAY I.

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, cilt.28, sa.8, ss.2979-2986, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 8
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1007/s12206-014-0705-2
  • Dergi Adı: JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2979-2986
  • Anahtar Kelimeler: Bearing vibration, Contact forces, Dry contact, Flexible link, Joint clearance, SLIDER-CRANK MECHANISM, CONTACT FORCE MODELS, MULTIBODY SYSTEMS, DYNAMIC-ANALYSIS, IMPACT ANALYSIS
  • Erciyes Üniversitesi Adresli: Evet

Özet

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.