Research Article
Mechanical Vibration Analysis of Fiber Reinforced Polymer Composite Beams Using Analytical and Numerical Methods
@INPROCEEDINGS{10.1007/978-3-030-80618-7_24, author={Nigatu D. Tilahun and Hirpa G. Lemu}, title={Mechanical Vibration Analysis of Fiber Reinforced Polymer Composite Beams Using Analytical and Numerical Methods}, proceedings={Advances of Science and Technology. 8th EAI International Conference, ICAST 2020, Bahir Dar, Ethiopia, October 2-4, 2020, Proceedings, Part II}, proceedings_a={ICAST PART 2}, year={2021}, month={7}, keywords={Beam of composites Vibration analysis Natural frequency Numerical analysis Resonance frequency}, doi={10.1007/978-3-030-80618-7_24} }- Nigatu D. Tilahun
Hirpa G. Lemu
Year: 2021
Mechanical Vibration Analysis of Fiber Reinforced Polymer Composite Beams Using Analytical and Numerical Methods
ICAST PART 2
Springer
DOI: 10.1007/978-3-030-80618-7_24
Abstract
In this study, the free and forced vibration analysis of fiber reinforced plastic composite beam has been conducted using numerical method (finite element analysis) and mathematical modeling in MATLAB. Mechanical and physical properties of the beam material are found using strength of material and semiempirical approach to get the equivalent properties. The beam is configured as cantilever beam with dimensions of 191 mm × 33 mm × 5.66 mm for all analyses of the vibration. For modal analysis of the vibrations, different effects such as fiber volume ratio, fiber materials, angle of orientation and stacking sequence of laminates are studied. From these effects, stacking sequence of laminates have highest influence on variation of stiffness and natural frequencies with unique fiber volume ratio and same fiber material. Forced vibration analysis was carried out using the same beam configuration as modal analysis, but with different stacking sequence of layers with harmonically exited loads. It has been observed that the vibration resonance occurred close to the natural frequencies of the beam.
