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Buckling and postbuckling behavior of compression-loaded isotropic plates with cutoutsAn experimental study of the buckling and postbuckling behavior of square and rectangular compression loaded aluminum plates with centrally located circular, square, and elliptical cutouts is presented. Experimental results indicate that the plates exhibit overall trends of increasing buckling strain and decreasing initial postbuckling stiffness with increasing cutout width. Corresponding plates with circular and square cutouts of the same width buckle at approximately the same strain level, and exhibit approximately the same initial postbuckling stiffness. Results show that the reduction in initial postbuckling stiffness due to a cutout generally decreases as the plate aspect ratio increases. Other results presented indicate that square plates with elliptical cutouts having a large cutout-width-to-plate-width ratio generally lose prebuckling and initial postbuckling stiffness as the cutout height increases. However, the plates buckle at essentially the same strain level. Results also indicate that postbuckling stiffness is more sensitive to changes in elliptical cutout height than are prebuckling stiffness and buckling strain.
Document ID
19900019543
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Nemeth, Michael P. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1990
Subject Category
Structural Mechanics
Report/Patent Number
L-16789
NAS 1.60:3024
NASA-TP-3024
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference
Location: Long Beach, CA
Country: United States
Start Date: April 2, 1990
End Date: April 4, 1990
Accession Number
90N28859
Funding Number(s)
PROJECT: RTOP 505-63-01-08
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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