An isoparametric eccentrically stiffened plate bending element

An 8 noded, eccentrically stiffened, plate bending element is introduced. The formulation allows for any number of stiffeners arbitrarily orientated within a plate element without disturbing their individual properties and positions. This is a distinct improvement over conventional lumped stiffener...

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Bibliographic Details
Published in:Engineering computations 1988-02, Vol.5 (2), p.110-116
Main Authors: Thompson, P.A., Bettess, P., Caldwell, J.B.
Format: Article
Language:English
Subjects:
Exact sciences and technology
finite element method
Fundamental areas of phenomenology (including applications)
Physics
plates
Solid mechanics
Static elasticity (thermoelasticity...)
stiffness
Structural and continuum mechanics
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Summary:An 8 noded, eccentrically stiffened, plate bending element is introduced. The formulation allows for any number of stiffeners arbitrarily orientated within a plate element without disturbing their individual properties and positions. This is a distinct improvement over conventional lumped stiffener modelling and equivalent orthotropic plate theory and considerably simplifies the modelling of stiffened structures. A technique is also presented which transforms stiffener positions defined in the global cartesian system to the local, isoparametric coordinates of the plate element which contains the given stiffener. Several examples are given which demonstrate the usefulness of the element.
ISSN:0264-4401
1758-7077
DOI:10.1108/eb023728