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RESEARCH PAPERS

Acoustoelastic Response of a Polycrystalline Aggregate With Orthotropic Texture

[+] Author and Article Information
G. C. Johnson

Department of Mechanical Engineering, University of California, Berkeley, Calif. 94720

J. Appl. Mech 52(3), 659-663 (Sep 01, 1985) (5 pages) doi:10.1115/1.3169117 History: Received March 01, 1984; Revised October 01, 1984; Online July 21, 2009

Abstract

Estimates of the effective second-order and third-order elastic constants of a polycrystalline aggregate exhibiting texture are presented for the case of orthotropic sample symmetry and cubic crystalline symmetry. The nature of the texture is brought into the analysis through the crystallites’ orientation distribution function which is written in a series of generalized spherical harmonics. The effective response is evaluated using a Voigt-type procedure in which the crystal stiffnesses are averaged over the orientation distribution function. In evaluating the results, it is found that only seven terms in the expansion for the orientation distribution function are required for the exact representation of the effective properties.

Copyright © 1985 by ASME
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