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Membrane triangles with corner drilling freedoms. I - The EFF elementThe formulation of 3-node 9-DOF membrane elements with normal-to-element-plane rotations (drilling freedoms) is examined in the context of parametrized variational principles. In particular, attention is given to the application of the extended free formulation (EFF) to the construction of a triangular membrane element with drilling freedoms that initially has complete quadratic polynomial expansions in each displacement component. The main advantage of the EFF over the free formulation triangle is that an explicit form is obtained for the higher-order stiffness.
Document ID
19930040306
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Alvin, Ken
(NASA Langley Research Center Hampton, VA, United States)
De La Fuente, Horacio M.
(NASA Langley Research Center Hampton, VA, United States)
Haugen, Bjorn
(NASA Langley Research Center Hampton, VA, United States)
Felippa, Carlos A.
(Colorado Univ. Boulder, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1992
Publication Information
Publication: Finite Elements in Analysis and Design
Volume: 12
Issue: 4-Mar
ISSN: 0168-874X
Subject Category
Structural Mechanics
Accession Number
93A24303
Funding Number(s)
CONTRACT_GRANT: NAG1-756
CONTRACT_GRANT: NAG3-934
CONTRACT_GRANT: NSF ASC-87-17773
Distribution Limits
Public
Copyright
Other

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