A NEW TEST BENCH FOR FRICTION MEASUREMENTS AND THE EVOLUTION OF THE LUGRE MODEL TO THE FROZEN MODEL

After a description of existing experimental methods and models built on the dynamic behavior of friction forces between two solids, this paper presents an original new test bench and specific measurement techniques used to better define the accuracy of measurements. This test bench has been designed for a large range of tests in terms of static strain, dynamic excitation, frequency and kinds of surfaces. The second part describes the choice of the model which is a development of the Lugre model we have called "Frozen" Model. Methods for parametric identification are proposed and comparisons between experiments and simulations are presented. In the third part a critical analysis is carried out on the test bench and its applications. (This paper is a part of a study on the prediction of vibration level of space launchers - Ariane V program). A parametrical analysis was conducted to lead and conclude a study on the robustness of the chosen model.