Header menu link for other important links
X
A volume-averaged nodal projection method for the Reissner–Mindlin plate model
A. Ortiz-Bernardin, P. Köbrich, J.S. Hale, E. Olate-Sanzana, S.P.A. Bordas,
Published in Elsevier B.V.
2018
Volume: 341
   
Pages: 827 - 850
Abstract
We introduce a novel meshfree Galerkin method for the solution of Reissner–Mindlin plate problems that is written in terms of the primitive variables only (i.e., rotations and transverse displacement) and is devoid of shear-locking. The proposed approach uses linear maximum-entropy basis functions for field variables approximation and is built variationally on a two-field potential energy functional wherein the shear strain, written in terms of the primitive variables, is computed via a volume-averaged nodal projection operator that is constructed from the Kirchhoff constraint of the three-field mixed weak form. The meshfree approximation is constructed over a set of scattered nodes that are obtained from an integration mesh of three-node triangles on which the meshfree stiffness matrix and nodal force vector are numerically integrated. The stability of the method is rendered by adding bubble-like enrichment to the rotation degrees of freedom. Some benchmark problems are presented to demonstrate the accuracy and performance of the proposed method for a wide range of plate thicknesses. © 2018 Elsevier B.V.
About the journal
JournalData powered by TypesetComputer Methods in Applied Mechanics and Engineering
PublisherData powered by TypesetElsevier B.V.
ISSN00457825
Open AccessYes
Concepts (17)
  •  related image
    Benchmarking
  •  related image
    Degrees of freedom (mechanics)
  •  related image
    Galerkin methods
  •  related image
    Locks (fasteners)
  •  related image
    MAXIMUM ENTROPY METHODS
  •  related image
    Potential energy functions
  •  related image
    Shear strain
  •  related image
    Stiffness matrix
  •  related image
    Bench-mark problems
  •  related image
    Mesh-free method
  •  related image
    MINDLIN PLATE MODELS
  •  related image
    PRIMITIVE VARIABLES
  •  related image
    PROJECTION OPERATOR
  •  related image
    SHEAR-LOCKING
  •  related image
    TRANSVERSE DISPLACEMENTS
  •  related image
    VANP METHOD
  •  related image
    MINDLIN PLATES