Determination of Elastic Constants of Orthotropic Plates By A Modal Analysis/Method of Superposition

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.

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Determination of orthotropic bone elastic constants using FEA and modal analysis

Journal of Biomechanics ◽

10.1016/s0021-9290(02)00022-2 ◽

2002 ◽

Vol 35 (6) ◽

pp. 767-773 ◽

Cited By ~ 150

Author(s):

W.R. Taylor ◽

E. Roland ◽

H. Ploeg ◽

D. Hertig ◽

R. Klabunde ◽

...

Keyword(s):

Modal Analysis ◽

Elastic Constants

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Experimental Determination of the Elastic Behavior of Orthotropic Plates

Journal of Engineering for Industry ◽

10.1115/1.3670829 ◽

1965 ◽

Vol 87 (3) ◽

pp. 315-317 ◽

Cited By ~ 27

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.

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Modal Analysis Method for Determination of Elastic Constants

Volume 3B: 15th Biennial Conference on Mechanical Vibration and Noise — Acoustics, Vibrations, and Rotating Machines ◽

10.1115/detc1995-0475 ◽

1995 ◽

Author(s):

V. Marchand ◽

J. Pouyet

Keyword(s):

Free Vibration ◽

Circular Plate ◽

Frequency Spectrum ◽

Elastic Constants ◽

Natural Frequencies ◽

Ritz Method ◽

Grid Method ◽

Analysis Method ◽

Experimental Frequency

Abstract The purpose of this paper is to present an original means to determine materials elastic constants using a free vibration method. This experimental device enables us to obtain the natural frequencies of a free circular plate subject to heating at temperatures ranging from 20 to 1000 °C. The vibrations of the sample are recorded by a microphone. The identification of experimental natural frequencies is obtained by comparison with frequency spectrum resulting from two experimental means. A grid method consists in determining the elastic constants of the materials by comparing the experimental frequency with the frequencies calculated analytically using Ritz method.

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