Theoretical Determination of Rigidity Properties of Orthogonally Stiffened Plates

1956 ◽  
Vol 23 (1) ◽  
pp. 15-20
Author(s):  
N. J. Huffington
Keyword(s):  
Elastic Constants ◽  
Orthotropic Plate ◽  
Constant Thickness ◽  
Stiffened Plates ◽  
Geometrical Configuration ◽  
Orthotropic Plates ◽  
Theoretical Determination

Abstract The analysis of bending and buckling of orthogonally stiffened plates may be simplified by conceptually replacing the plate-stiffener combination by an “equivalent” homogeneous orthotropic plate of constant thickness. This procedure requires the determination of the four elastic rigidity constants which occur in the theory of thin orthotropic plates. Methods are presented whereby these quantities may be determined analytically in terms of the elastic constants and geometrical configuration of the component parts of the structure.

Experimental Determination of the Elastic Behavior of Orthotropic Plates

1965 ◽  
Vol 87 (3) ◽  
pp. 315-317 ◽  
Author(s):  
Stephen W. Tsai
Keyword(s):  
Experimental Determination ◽  
Experimental Method ◽  
Elastic Constants ◽  
The Self ◽  
Experimental Confirmation ◽  
Elastic Behavior ◽  
Orthotropic Plates ◽  
Filament Wound

A simple experimental method is proposed for the determination of the elastic constants of orthotropic plates. This method employs the self-stabilizing feature of the pure twisting tests, from which relations among the independent elastic constants can be derived. Using filament-wound materials as test specimens, good experimental confirmation of the proposed method is found.

Determination of the orthotropic plate parameters of stiffened plates and grillages in free vibration

1967 ◽  
Vol 17 (6) ◽  
pp. 422-438 ◽  
Author(s):  
K. T. Sundara Raja Iyengar ◽  
R. Narayana Iyengar
Keyword(s):  
Free Vibration ◽  
Orthotropic Plate ◽  
Stiffened Plates

A theoretical determination of the elastic constants of ice

1948 ◽  
Vol 44 (3) ◽  
pp. 423-439 ◽  
Author(s):  
Angela H. A. Penny
Keyword(s):  
Single Crystals ◽  
Elastic Constants ◽  
Symmetry Transformation ◽  
Simplified Model ◽  
Experimental Measurements ◽  
Dynamical Matrix ◽  
Ice Crystal ◽  
Theoretical Determination ◽  
Symmetry Operations

A simplified model of the ice crystal, equivalent to Barnes's, was used. By applying the symmetry operations of this model to the dynamical matrix, it was made to depend on six arbitrary constants. By assuming that the tetrahedra of oxygen atoms which form the lattice are regular, and hence applying a further symmetry transformation to a smaller unit of the crystal, the number of arbitrary constants was reduced to two. The elastic constants were then found in terms of these two atomic constants. Two of the experimental measurements of the elastic constants of polycrystalline (quasiamorphous) ice were used to calculate the atomic constants and hence the elastic constants for single crystals.

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