Impacts with friction: structures, energy, measurements

Abstract

Many machine and mechanism processes are accompanied by impacts with friction. They arise by short-time contacts between two or more bodies, and they generate energy losses mainly due to friction in tangential contact directions. During the last two decades, a couple of impact models based on the theory of rigid body contact were established, connected with the names of Moreau, Fremond and Glocker, which all work quite satisfactorily with respect to practical applications, although some examples indicate deviations requiring more investigations with respect to the impact models and the type of examples considered. We shall focus on Glocker’s model, for which some experimental verifications are available by Beitelschmidt. On the basis of this model and its extensions, some investigations with respect to energy, structural features and experiments are presented. A selection of industry problems will close the paper.