On twisting of orthotropic plates in a large deflection regime

Chandra, R (1976) On twisting of orthotropic plates in a large deflection regime. AIAA Journal, 14 (8). pp. 1130-1131. ISSN 0001-1452

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The paper analyzes the large deflection behavior of an orthotropic square plate subjected to pure twisting moments distributed at all four edges of the plate supported at two opposite corners from below and at a third corner from above. The load is applied at the fourth corner. An expression relating load to deflection is derived by applying the principle of total potential energy. This expression is used to plot load-deflection curves, neglecting the contribution of self weight, for isotropic (aluminum), glass-epoxy, graphite-epoxy, and boron-epoxy plates. It is shown that the load-deflection curve is linear up to deflections of the order of plate thickness. This means that for the four cases considered, small deflection theory is adequate to predict the deflections as long as these are of the order of plate thickness. The load-deflection expression can be used to determine the shear modulus of plates by measuring deflections in the large deflection range.

Item Type: Article
Additional Information: Copyright for this article belongs to AIAA
Uncontrolled Keywords: Bending moments;Deflection;Orthotropic plates;Plate theory;Twisting;Aluminum;Boron reinforced materials;Carbon fiber reinforced platics;Glass fiber reinforced plastics;Load distribution(forces);Metal plates;Rectangular plates
Subjects: AERONAUTICS > Aeronautics (General)
Depositing User: M/S ICAST NAL
Date Deposited: 03 Mar 2010
Last Modified: 24 May 2010 04:24
URI: http://nal-ir.nal.res.in/id/eprint/3730

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