Dynamics analysis of planar mechanical system considering revolute clearance joint wear

• A new nonlinear contact force model is used to model the contact in clearance joints.
• The wear characteristics of revolute clearance joint are analyzed.
• The integration of dynamics analysis and wear analysis is presented.
• The dynamics of mechanism with non-regular clearance caused by joint wear is investigated.

In this work, the dynamics and wear phenomenon of clearance joint in planar mechanical system is presented using a computational methodology. The contact model in clearance joint is established using a hybrid nonlinear contact force model and the friction effect is considered by using a modified Coulomb friction model. The wear prediction of revolute clearance joint in mechanical systems is presented based on the Archard wear model. Finally, the integration of dynamics analysis and wear analysis is presented. An academic four-bar multibody mechanical system with revolute clearance joint is used as numerical example application to perform the investigation.