The simulation of structural problems involving the deformations volumetric bodies is paramount importance in many areas engineering. Although use tetrahedral elements extremely appealing, discretisations are generally known as very stiff and hence often avoided typical workflows. development mixed displacement–pressure approaches has allowed to effectively overcome this problem leading a class...

A constitutive model based on two–dimensional unstructured Galerkin finite volume method (GFVM) is introduced and applied for analyzing nonlinear behavior of cracked concrete structures in equilibrium condition. The developed iterative solver treats concrete as an orthotropic nonlinear material and considers the softening and hardening behavior of concrete under compression and tension by using...

Our recent work in which we study the propagation of the general Hermite-sinusoidal-Gaussian laser beams in wireless broadband access telecommunication systems is elaborated in this paper to cover the special case of an off-axis Gaussian beam. We mainly investigate the propagation characteristics in atmospheric turbulence of an off-axis Gaussian beam possessing Gaussian distributed random displ...

We consider the multidirectional swelling and drying of hydrogels formed from super-absorbent polymers water, focusing on elastic deformation caused by differential swelling. By modelling as instantaneously incompressible, linear-elastic materials considering situations in which there can be large isotropic strains (arising swelling) while deviatoric remain small, it is possible to describe acc...

Stretching process of sheet metals in both cases of axisymmetric and non-axisymmetric is analyzed. A rigid-plastic, normal anisotrop material is assumed and large strain formulation is applied. Triangular elements are used and stiffness equations of elements are obtained from virtual work principle. These nonlinear equations are linearized by Newton-Raphsons method and are solved by Gaussian el...