The target of this study is to reduce the impact initial imperfection on nonlinear dynamical performance laminated composite plates by taking advantage orthotropic characteristics changing carbon fiber sawing in mass matrix and orientation with different patterns studying effect optimization without (Wo) aspect ratios (W/L) various boundary conditions through analyzing load-displacement respons...

This paper investigates the capacity of solid finite elements with independent interpolations for displacements and strains to address shear, membrane volumetric locking in analysis beam, plate shell structures. The performance proposed strain/displacement formulation is compared standard one through a set eleven benchmark problems. In addition relative both element formulations, studies effect...

An easy-to-implement method to measure relevant elastic and damping properties of the constituents of a sandwich structure, possibly with a heterogeneous core, is proposed. The method makes use of a one-point dynamical measurement on a thick plate. The hysteretic model for each (possibly orthotropic) constituent is written generically as “E(1 + jη)” for all mechanical parameters. The estimation...

Theproblemofpiezoelectric laminateswith speciŽ ed surface tractions and surface and internal electric potentials is studied. By writing the governing equations in the state-space formulation, employing an asymptotic expansion technique, and expressing electric displacement jumps across internal electrodes in terms of basic unknowns, the three-dimensional problem is reduced to a hierarchy of two...

We obtain the existence and the uniqueness at the same time in the reconstruction of orthotropic conductivity in two space dimensions by using two sets of internal current densities and boundary conductivity. The curl free equation of Faraday’s law is taken instead of the elliptic equation in a divergence form which is typically used in electrical impedance tomography. A reconstruction method b...