A field-consistent formulation for the eight-noded solid finite element

Chandra, Satish and Prathap, Gangan (1989) A field-consistent formulation for the eight-noded solid finite element. Computers and Structures, 33 (2). pp. 345-355. ISSN 0045-7949

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Abstract

A field-consistent eight-noded displacement-type solid element is derived by augmenting the usual eight trilinear shape functions with bubble functions and smoothing to achieve consistent definitions for the constrained strain fields. This produces an element that is free of parasitic shear and 'Poisson's locking' and is now also frame 13; invariant; i.e., the element stiffnesses are invariant regardless of the node numbering scheme or the orientation of the element local axes. The field- consistency approach is also used to free the element of locking in the incompressible/near-incompressible regime.

Item Type:	Article
Additional Information:	Copyright for this article belongs to Elsevier Science
Uncontrolled Keywords:	Locking;Solids;Stiffness;Formulations;Bubbles;Finite element method;Nodes;Frames;Orientation;Displacement;Strain;Bending moments;Isoparametric finite elements;Rectangular plates;Shear strain;Stress-strain relationships;Cantilever beams;Modulus of elasticity
Subjects:	ENGINEERING > Structural Mechanics
Depositing User:	M/S ICAST NAL
Date Deposited:	10 Feb 2010
Last Modified:	07 May 2012 05:34
URI:	http://nal-ir.nal.res.in/id/eprint/4422

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