Theoretical and Experimental Analysis of the Vibrational Behavior of a Polyester Composite Material

摘要

Polyester composite materials are being used increasingly in numerous and diversified activities, they are often subjected to harmful vibrations. The molding techniques of the polyester composite materials have been developing increasingly, among these techniques we name: contact molding and projection molding. This work aims to study the vibrational behavior of two polyester composite beams obtained using the two mentioned techniques. To this end, we proceed to an experimental study to determine the mechanical characteristics of the polyester composite beams, and we conduct a vibrational analysis. Besides, we proceed to a theoretical study using a polynomial field of displacement based on trigonometric series, and we apply the Hamilton's principle. The experimental results allow adjusting the analytical method used, and comparing the two molding techniques of polyester composite materials.