Abstract
This work presents the results of comparative analyses of the influence of tangential longitudinal and tangential transverse vibrations on friction force in sliding motion. The analyses were conducted in the function of two principal vibrations parameters such as the frequency f and amplitude u0. It has been demonstrated that, during longitudinal vibrations, the amplitude va of their velocity constitutes a key parameter on whose magnitude the initiation of reduction in friction force depends. However, the level of the reduction cannot be determined unequivocally based on the magnitude of this parameter alone. Analyses were carried out in the Matlab-Simulink environment with the use of our own original models and computational procedures utilizing Dahl’s, Dupont’s and LuGre dynamic friction models for the description of friction force. The results of simulating analyses were experimentally verified.
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