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Analysis of rectangular square plates by the mixed Meshless Local Petrov-Galerkin (MLPG) approach (CROSBI ID 147919)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Jarak, Tomislav ; Sorić, Jurica Analysis of rectangular square plates by the mixed Meshless Local Petrov-Galerkin (MLPG) approach // Computer modeling in engineering & sciences, 38 (2008), 3; 231-262

Podaci o odgovornosti

Jarak, Tomislav ; Sorić, Jurica

engleski

Analysis of rectangular square plates by the mixed Meshless Local Petrov-Galerkin (MLPG) approach

A new mixed meshless formulation based on the interpolation of both strains and displacements has been proposed for the analysis of plate deformation responses. Kinematics of a three dimensional solid is adopted and discretization is performed by the nodes located on the upper and lower plate surfaces. The governing equations are derived by employing the local Petrov-Galerkin approach. The approximation of all unknown field variables is carried out by using the same Moving Least Squares functions in the in-plane directions, while linear polynomials are applied in the transversal direction. The shear locking effect is efficiently minimized by interpolating the strain field independently from the displacements. The Poisson’ s thickness locking phenomenon is eliminated by introducing a new procedure based on the modification of the nodal values for the normal transversal strain component. The numerical efficiency of the derived algorithm is demonstrated by the numerical examples.

mixed approach; plates; MLPG; shear locking; thickness locking

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Podaci o izdanju

38 (3)

2008.

231-262

objavljeno

1526-1492

Povezanost rada

Strojarstvo

Indeksiranost