Naslov
Meshless Local Petrov-Galerkin (MLPG) Formulations for Analysis of Shell-like Structures

Autori
Sorić, Jurica ; Jarak, Tomislav

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
ECCOMAS Multidisciplinary Jubilee Symposium: New Computational Challenges in Materials, Structures, and Fluids

Urednik/ci
Eberhardsteiner, Josef ; Hellmich, Christian ; Mang, Herbert A. ; Periaux, Jacques

Izdavač
Springer

Grad
Berlin

Godina
2009

Raspon stranica
277-289

ISBN
978-1-4020-9230-5

Ključne riječi
MLPG, mixed approach, shell-like structures, locking

Sažetak
Meshless computational strategies based on the local Petrov-Galerkin approach are proposed for the analysis of shell and plate structures. A fully displacement formulation is used in shell analysis, while a more efficient mixed algorithm is proposed for modelling of plate deformation responses. In both cases a concept of a three dimensional solid is applied. Discretization is carried out by using a moving least square approximation and simple polynomial functions. The Poisson’ s thickness locking is successfully eliminated in both formulations. In fully displacement approach, shear locking is minimized by raising the order of ap-proximation functions, and it is completely suppressed by using the inter-polation of the strain field in the mixed formulation. The numerical efficiency of the derived concepts is demonstrated by numerical examples.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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