Prediction of Dynamic Stick-Slip Events in Belt-Drives Using a High-Fidelity Finite Element Model

Abstract

A high-fidelity dynamic finite element model of a one-pulley belt-drive system is used to study how the Coulomb friction coefficient and adhesion stress affect belt stick-slip events over driver and driven pulleys. The model shows that at Coulomb friction coefficient below a certain critical value, the belt undergoes pure sliding in the slip arc on driver and driven pulleys with no stick-slip dynamic events. Above that friction coefficient value dynamic stick-slip events start to occur in both driver and driven pulleys resulting in torque pulses, which for practical belt-drives may cause non-smooth operation, excessive belt noise and/or excessive belt wear. For driver pulleys the dynamic stick-slip events are in the form of Shallamach waves, while for driven pulleys the dynamic stick-slip events are in the form of expansion pulses. The model results are validated using recently generated experimental results.

Discussion of Stick-Slip Dynamics of 2DOF Sliding Systems Based on Dynamic Vibration Absorbers Analysis

“…Therefore, it is important to understand the condition of stick-slip occurrence and develop design guidelines for suppressing it. Stick-slip is often observed in rubber sliding parts such as windshield wipers [1,2] and rubber belts [3,4]. In addition, stick-slip is observed in many industrial products, including automotive parts such as disc brakes and clutches [5,6].…”