Session: FSI-04-01 FSI Design and AI for Industry

Paper Number: 154412

154412 - A New Continuous Decay/stribeck Friction Model 

Abstract: 

The friction model is a crucial element in the detailed analysis of the dynamics of mechanical systems across various industries. The Coulomb friction model is currently employed to simulate tube-support interactions in steam generators within the nuclear industry. However, this model is very basic and cannot capture all aspects of friction behavior, particularly the transition from static friction to kinetic friction.

In previous work, the parameters of different friction models were identified and validated using FEM (Finite Element Method). Several issues were detected, such as the discontinuity in the Stribeck or decay friction models. In this paper, we analyze this discontinuity and propose improvements by introducing a new friction model called 'A Continuous Decay/Stribeck Friction Model.' The identification of parameters, their sensitivity, and their effects on the frictional behavior and dynamic response of the system are also discussed. Additionally, the limitations of this model are addressed.

The experimental results presented in the works of Baumberger et al. involve the analysis of experimental data through parameter identification for the Stribeck and decay friction models, as well as the new proposed friction model. Additionally, the experimental results from the works of Oden and Martins were also analyzed in this study. However, the results will be presented in a separate article titled 'A Novel Decay Friction Model with Natural Continuity,' where the discontinuity observed during the transition between increasing and decreasing velocity is analyzed and resolved.

Presenting Author: Abdallah Hadji Polytechnique Montréal

Presenting Author Biography: Abdallah Hadji, ing., Ph. D.
Research Associate
Fluid Structure Interaction (FSI) LAB
Applied Mechanics Section
Polytechnique Montréal

Authors:

Abdallah Hadji Polytechnique Montréal
Njuki Mureithi Polytechnique Montréal