A finite element analysis of friction damping in a slip joint

摘要

Micro-slip along frictional interfaces often provides the dominant damping mechanism in a built-up structure and plays an important role in the dynamic behavior of the structure. This paper presents the results of a finite element study of the effect of dry friction on the damping response of a slip joint. The emphasis of this paper is to understand the evolution of the slip and stick regions along the joint interface during loading and to quantify the amount of energy dissipation during cyclic loading and its dependence on structural and loading parameters. Finite element predictions have been compared to experimental measurements and early analytical predictions in the literature. This study seems to demonstrate the potential of the finite element method in providing adequate "numerical" test data for formulating lumped-parameter structural models that can simulate the nonlinear dynamic behavior of bolted joints.