DETERMINATION OF THE EQUIVALENT ELASTIC COEFFICIENTS OF THE COMPOSITE MATERIALS BY THE VIBRATORY ANALYSIS

R. Tchatchou Metchunzin, G.E. Ntamack, K. Mansouri, Charif DªOuazzane S.

Abstract: We must first find a behaving law of a material, before using it in the structure. The establishment of this law in the case of a composite material requires the knowledge of his elastic equivalent coefficient. In this work, we will present the vibratory technic with which we can extract the equivalent elastic coefficients of some composite materials. The relationships we have obtained through this analysis permits to evaluate the equivalent elastic coefficients of composite materials as a function of their self throb. Those relationships are first validated with the determination of mechanical characteristics of conventional materials. After that, equivalent elastic coefficients of some composite materials are evaluated. Simulated results we have obtained are discussed in comparison of Voigt and Reuss boundaries.

Keywords: Composite materials, Vibration, Self throb, Young’s Modulus, Finite Elements Method

DOI: https://doi.org/10.15623/ijret.2013.0206024