Development and validation of a friction model for simulation of friction clutch dynamics in a multi-body system

摘要

This paper deals with the development and validation of a mathematical friction model for numerical friction clutch simulation within a dynamic multi-body system of complete vehicle powertrains to be used by the commercial numerical code AVL EXCITE. The corresponding requirements and demands of the automotive industry and the given software environment are presented along with the advantages of the new friction model. The focus is to find a model capable rendering important friction dynamics and true stick. Detailed tribological analysis of the developed friction model is done and results for the so called STICK/SLIP test are given, to show the capabilities and properties of the friction model. Validation of the developed friction model on a special test bed is presented. A comparison of experimental validation measurement results and numerical simulation results shows a remarkably good agreement.