Comparison of mathematical models of torque transmitted by multi-disc wet clutch with experimental results

Abstract

In the paper results of experimental tests on a multi-disc wet clutch are presented. Typical, single-sided multi-disc wet clutch was analysed. Experimentally obtained data present torque capacity of the clutch with varying number of friction surfaces. The results are also compared to characteristics obtained based on several known mathematical models. It was found that differences between most of known models describing torque transmitted by clutches and experimental results are considerable. The best correspondence between model and experiment was reached for Bąk’s model. Nevertheless, differences between the model and data gained via experiment might differ substantially i.e., characteristic of proposed model are mostly shifted upwards in relation to experimental characteristics. The paper also includes a brief description of a test stand and its scheme. The article presents also a figure which contains diagrams presenting all characteristics as functions of average contact pressure on friction surfaces.