Design and Development of a Test-Rig for Determining Vibration Characteristics of a Beam

Abstract

The paper discusses on the design and development of a test-rig for estimating the vibration characteristics of a beam. The salient features of the test rig, which makes it possible to conduct a set of experimental cases to determine the nature of vibration under different variations, and the test cases envisaged are discussed. Using the test-rig developed, the main objective is to analyse the transverse vibrations of flexible rectangular beams of aluminium alloy and mild steel for different cross sections and to study the importance of excitation on vibration response. Comparative study is performed based on the effect of variations in the characteristics of the beam on frequency and amplitude of vibration for different end conditions. An effort is made to estimate the relation between exciting centrifugal force due to rotating eccentric mass and amplitude of vibration for various cases under consideration.