Geodesic
Properties of operator constitutive relations in mechanics of deformable solid
Theoretical and applied mechanics, Tome 50 (2023) no. 2, p. 103

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The constitutive relations between stresses and strains in the mechanics of a deformable solid, including their operator connection, are considered. Some important and frequently occurring properties of tangent modulus and tangent pliability as rank four tensors are described. Depending on this, a possible classification of continuous media is proposed. Scleronomous and rheonomic media, homogeneous and inhomogeneous media (in particular, composites), media with memory, spatially nonlocal media, materials with hard or soft characteristics are distinguished. For non-linearly elastic isotropic media, the apparatus of tensor nonlinear isotropic functions of one argument is developed. Particular attention is paid to the three-term representation of power tensor series in three-dimensional space, reversibility of tensor functions, Taylor tensor series, tensor linearity (quasilinearity) and nonlinearity.
DOI : 10.2298/TAM230719008G
Classification : 74A20, 74B20
Keywords: constitutive relation, operator, material function, tangent module, tangent pliability, soft (hard) characteristics, rheonomous and scleronomous media, composite, non-local medium, isotropic tensor function 
Dimitri V. Georgievskii. Properties of operator constitutive relations in mechanics of deformable solid. Theoretical and applied mechanics, Tome 50 (2023) no. 2, p. 103 . doi: 10.2298/TAM230719008G
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