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This article is cited in 4 scientific papers (total in 4 papers)
Transversely isotropic tensor closest in euclidean norm to a given anisotropic elastic modulus tensor
N. I. Ostrosablin Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract:
The problem of determining the transversely isotropic tensor closest in Euclidean norm to a given anisotropic elastic modulus tensor is considered. An orthonormal basis in the space of transversely isotropic tensors for any given axis of symmetry was obtained by decomposition of a transversely isotropic tensor in the general coordinate system into an isotropic part, two deviator parts, and a nonoric part. The closest transversely isotropic tensor was obtained by projecting the general anisotropy tensor onto this basis. Equations for five coefficients of the transversely isotropic tensor were derived and solved. Three equations that are stationary conditions were obtained for the direction cosines of the axis of rotation (symmetry). Solving these equations yields the absolute minimum distance from the transversely isotropic tensor to the given anisotropic elastic modulus tensor. The transversely isotropic elastic modulus tensor closest to the cubic symmetry tensor was found.
Keywords:
elastic moduli, irreducible invariant decompositions, transversely isotropic tensor, Euclidean distance, closest.
Received: 22.05.2018 Revised: 05.09.2018 Accepted: 24.09.2018
Citation:
N. I. Ostrosablin, “Transversely isotropic tensor closest in euclidean norm to a given anisotropic elastic modulus tensor”, Prikl. Mekh. Tekh. Fiz., 60:1 (2019), 124–141; J. Appl. Mech. Tech. Phys., 60:1 (2019), 106–122
Linking options:
https://www.mathnet.ru/eng/pmtf488 https://www.mathnet.ru/eng/pmtf/v60/i1/p124
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