Abstract
IN recent years there have been several publications by Laval1, LeCorre2 and other authors3–5 suggesting a more general approach to crystal elasticity, which, among other features, requires for a triclinic crystal 45 independent elastic constants instead of the classical 21 (with corresponding increases in each of the crystal classes). The stress tensor is not symmetrical, and body couples (or volume couples) act in the crystal.
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References
Laval, J., “L'état solide”, Rapports et Discussions, Congrès Solvay 1951 (Stoops, Bruxelles); J. Physique Rad., 18, 247, 289, 369 (1957).
LeCorre, Y., Bull. Soc. Franc. Minér. Crist., 76, 464 (1953); 77, 1363 and 1393 (1954) ; 78, 33 (1955). J. Physique Rad., 19, 541 (1958).
Viswanathan, K. S., Proc. Ind. Acad. Sci., A, 39, 196 (1954); 41, 98 (1955).
Raman, C. V., and Viswanathan, K. S., Proc. Ind. Acad. Sci., A, 42, 1, 51 (1955).
Joel, N., and Wooster, W. A., Nature, 180, 430 (1957).
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JOEL, N., WOOSTER, W. Number of Elastic Constants required in Crystal Elasticity. Nature 182, 1078–1079 (1958). https://doi.org/10.1038/1821078b0
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DOI: https://doi.org/10.1038/1821078b0
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