Vibration of woven fiber laminated composite plates in hygrothermal environment

Abstract

The present study deals with both experimental and numerical investigation on the free vibration behavior of laminated composite plates subjected to varying temperature and moisture. A simple laminated plate model is developed for the vibration of composite plates subjected to hygrothermal loading. A computer program based on finite element method in the MATLAB environment is developed to perform all necessary computations. The woven fiber glass/epoxy specimens were hygrothermally conditioned in a humidity cabinet where the conditions were maintained at temperatures of 300–425 K and relative humidity ranging from 0% to 1.0% for moisture concentrations. Quantitative results are presented to show the effects of geometry, material and lamination parameters of woven fiber laminate on the free vibration of composite plates for different temperature and moisture concentrations. The numerical and experimental results show that there is reduction in natural frequency in Hz with the increase in temperature and moisture concentration for laminates with simply supported and clamped boundary conditions with different aspect ratio and side-to-thickness ratios.

Free Vibration Bahaviour of Fiber Metal Laminates, Hybrid Composites, and Functionally Graded Beams using Finite Element Analysis

“…The effective material properties were calculated based on Eqs. (7), (8), and (9), when y = −h/2, E = E s , ρ = ρ s and similarly, when y = +h/2, E = E a , ρ = ρ a (i.e. the material properties varied continuously from steel at the bottom surface to aluminum at the top surface).…”

“…7 Rath and Sahu presented an experimental and numerical investigation on the free vibration behavior of laminated composite plates subjected to varying temperatures and moisture, and observed that there was a reduction in the natural frequency with the increase in temperature and moisture concentration in laminated composites. 8 The linear and nonlinear free vibrations of rotating composite Timoshenko beams was studied by Arvin and Bakhtiari-Nejad by basing the formulation on the nonlinear Von-Karman strain-displacement relationships.…”

Free Vibration Analysis of Laminated Composite Plates with General Boundary Elastic Supports Under Initial Thermal Load

“…For handling the random Eigen value problem, the finite element method is applied. The research transacted for together numerical and experimental examinations of the free vibration behavior under different moisture and temperature of composite laminated plates presented at [9]. The governing equations have been found based on first-order 24 shear deformation theory (FSDT) for the behavior structural of the composite laminated plates.…”

Effect of basalt fiber hybridization on the vibration‐damping behavior of carbon fiber/epoxy composites

“…In recent years, fiber reinforced composite materials have been undergoing intensive developments and are being increasingly used in a wide range of engineering applications as an alternative to conventional monolithic materials. Compared with the conventional monolithic materials, fiber reinforced composite materials offer significant performance advantages for a variety of static and dynamic mechanical properties such as excellent strength‐ and stiffness‐to‐weight ratios , better fatigue resistance , high resistance to corrosion and chemical attacks , good thermal insulating , and better vibration damping . Because of the effects on structural stability, reliability and performance of structural components, the vibration damping characteristics have made fiber reinforced composite materials attractive in the fields of high performance structural applications subjected to vibratory loads such as cars, marine vessels, aircrafts, space shuttles, etc.…”