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Foundation ::
Engineering Applications ::
COMPPAP
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COMPPAP
Composite Plate Buckling Analysis Program
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Moderators:
Adopt This Application!
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SOURCE CODE AVAILABLE
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The Composite Plate Buckling Analysis Program (COMPPAP) was written
to help engineers determine buckling loads of orthotropic (or isotropic)
irregularly shaped plates without requiring hand calculations from design
curves or extensive finite element modeling.
COMPPAP is a one element
finite element program that utilizes high-order displacement functions.
The high order of the displacement functions enables the user to produce
results more accurate than traditional h-finite elements. This program
uses these high-order displacement functions to perform a plane stress
analysis of a general plate followed by a buckling calculation based on the
stresses found in the plane stress solution. The current version assumes a
flat plate (constant thickness) subject to a constant edge load (normal or
shear) on one or more edges.
COMPPAP uses the power method to find the eigenvalues of the buckling
problem. The power method provides an efficient solution when only
one eigenvalue is desired. Once the eigenvalue is found, the eigenvector,
which corresponds to the plate buckling mode shape, results as a byproduct.
A positive feature of the power method is that the dominant eigenvalue
is the first found, which is this case is the plate buckling load. The
reported eigenvalue expresses a load factor to induce plate buckling.
COMPAP carries the NASA case number MSC-22428. It was originally released as part of the NASA COSMIC collection.
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