ABSTRACT
Dynamic friction force is the amount of force necessary to keep the two objects moving relative to each other. This dynamic friction force depends on several parameters, such as relative velocity, contact surface, normal load etc. the main aim of this project work is to analyze the effect of relative velocity on the dynamic friction. Till now only the analytical results regarding effect of relative velocity on dynamic friction are available which are based on several assumptions for simplifying the study. In this project, an effort has been made to characterize the dynamic friction force with relative velocity experimentally. In this project, we consider the classical “mass on a moving belt” model for describing friction-induced vibration. By using this model we can study the stick-slip phenomena. In this work, an experimental setup is built to observe, record and analyze friction damped oscillation. In this project, the dynamics of „mass on a moving belt‟ is solved numerically and the effect of different parameters on the response is studied and these computational results are used to build up a model. A modified experimental setup is used for experimental study of stick-slip vibration which is used for characterizing friction with relative velocity. The experiments are conducted for different sets of parameters and it is found that the variation of friction force is linear with relative velocity.
