Suppressing Structural Vibration Using Multiple Arrays Of Linear Dynamic Vibration Absorber (DVA)

Chan, Chen Hua (2018) Suppressing Structural Vibration Using Multiple Arrays Of Linear Dynamic Vibration Absorber (DVA). Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Suppressing Structural Vibration Using Multiple Arrays Of Linear Dynamic Vibration Absorber (DVA).pdf - Submitted Version Download (232kB)

Abstract

A fixed-free beam is a structural element supported at one side only and have no any constraint at other side. Exposure to vibration can cause excessive deflections and structure might failed. The aim of this research is to study the application of multi dynamic vibration absorber on a fixed- free beam strucure. For experimentation, two absorbers were fabricated to be installed to the beam and subjected to a force vibration frequency loading using shaker. The resonance frequencies of interest were 14Hz and 99.6Hz. The vibration level of beam is measured for comparing the effect with the presence of application vibration absorbers to see the reduction in its amplitudes. The results shows the reduction of amplitude with single vibration absorber. With application of multiple DVAs, the frequency bandwidth of suppression is increased. Configuration of vibration absorbers on location did not affect its performance in vibration suppression at second natural frequency. From these results, it showd that distributed vibration absorbers is the prefered method of configuration where the range of frequency bandwidth is greatest. The knowledge gained from this research can be used to minimize the vibration amplitdue of sturcutures and increase their life-span. This application can be apply in suppresing the vibration of machine, bridge, and fluttering of airplane wing.

Actions (login required)

View Item