Force and moment corrections for the warped four-node quadrilateral plane shell element

Naganarayana, BP and Prathap, Gangan (1989) Force and moment corrections for the warped four-node quadrilateral plane shell element. Computers and Structures, 33 (4). pp. 1107-1115. ISSN 0045-7949

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Abstract

A four-node quadrilateral plate element can be used as a facet shell element only if provision is made to allow for non coplanarity of the four nodes. The element stiffnesses are generated for a 'mean plane' equidistant from the four nodes, and are corrected by introducing equilibrated forces and moments as the element is 'moved' to the original nodes. In this paper, a rational procedure is introduced for determining the 'kick-off forces', and it is shown that the procedure used in NASTRAN violates a virtual work condition and leads to difficulties in certain warped configurations.

Item Type: Article
Additional Information: Copyright for this article belongs to Elsevier Science
Uncontrolled Keywords: Beams (Supports);Nastran;Plate theory;Shell theory;Tensile stress;Cartesian coordinates;Matrices (Mathematics); Twisting;Virtual properties;Shells;Stiffness;Computer aided analysis
Subjects: ENGINEERING > Structural Mechanics
ENGINEERING > Mechanical Engineering
Depositing User: Users 90 not found.
Date Deposited: 10 Feb 2010
Last Modified: 07 May 2012 05:34
URI: http://nal-ir.nal.res.in/id/eprint/4424

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