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This paper presents a free vibration analysis of un-damped woven roving laminated composite plate using Classical Laminate Plate Theory (CLPT), for different boundary conditions. The fiber glass/epoxy woven roving laminated composite plates have been prepared using hand layup method. Three different fiber orientations have been considered for the fiber glass/epoxy laminated composite plate, having 50% each percentage by volume of glass and epoxy. Effects of fiber orientation on different mechanical properties such as density, hardness, impact strength and impact strength have been studied. Finite element modeling of the composite plates has been performed using different boundary conditions such as CCCC, CFCF, and CFFF and the fundamental frequencies obtained from the computational modeling have been compared with the available literature.

The present study deals with the rheological behavior modeling of a dielectric elastomeric (DE) material class. The DE materials are commonly used to develop soft actuators and energy harvesters in soft robotics. DE is a class of electroactive polymers that produces large strains with an electrically induced load application. In this article, a micro mechanics-based thermodynamically consistent rheological model is derived to capture the electro–viscoelastic behavior of the DE material class. A multiplicative deformation gradient decomposition into elastic and viscous parts is incorporated to attain a transitional configuration. The decomposition is being used for setting up the constitutive evolution equations for an electro–viscoelastic deformation. The derived rheological model agrees well with existing experimental results. We succeed here to enable the effect of viscosity and electric field on the deformation simultaneously with a micro mechanics-based analytical finding with the least possible material parameters.