alexa Models and Computational Methods for Dynamic Friction Phenomena
Engineering

Engineering

Journal of Steel Structures & Construction

Author(s): J T Oden, JAC Martins

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This paper addresses the general problem of formulating continuum models of a large class of dynamic frictional phenomena and of developing computation methods for analyzing these phenomena. Of particular interest are theories which can adequately predict stick-slip motion, frictional damping in structural dynamics, and sliding resistance. This work is divided into three principal parts. In Part I, a large body of experimental and theoretical literature on friction is critically reviewed and interpreted as a basis for models of dynamic friction phenomena. In Part II, continuum models of interfaces are developed which simulate key interface properties identified in Part I. Variational principles for a class of dynamic friction problems are also established. In Part III, finite element models and numerical algorithms for analyzing dynamic friction are presented. Also, a dynamic stability analysis is presented in which it is established that stick-slip motion can be associated with dynamic instability of the governing nonlinear system for certain ranges of slip velocity and coefficient of friction. Numerical results suggest that the new models derived here can satisfactorily depict a large and important class of dynamic friction effects.

This article was published in Computer Methods in Applied Mechanics and Engineering and referenced in Journal of Steel Structures & Construction

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