DYNAMIC RESPONSE OF BOLTED JOINTS UNDER HARMONIC EXCITATIONS

Abstract

Three dimensional finite element modeling of two flexible plates connected by a shear bolted lap joint is done in order to determine the dynamic characteristics of the model. Energy dissipation occurs due to friction and micro slip between the contacting surfaces of the plates when they are subjected to vibrations. Hysteresis curves are drawn to calculate this dissipated energy under different harmonic loadings. This work involves use of ANSYS to analyze the three dimensional model. A FE analysis will be performed on the contacting surfaces to observe the variation in different dynamic parameters of the joint. And by using Proper Orthogonal Decomposition (POD) concept, the POM modes will be determined for the system to show how they can be helpful in the reduction of the model.