Annular Rod Torsion under Orthotropic Creep
I. A. Banshchikova
Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: structural alloys, orthotropy, creep, torsion, annular rod, minimum additional scattering and total power, characteristic point
Abstract
Solutions to a problem of a solid circular rod made of orthotropic creep material and subjected to torsion by a constant moment are generalized to the case of an annular rod. Calculations are carried out using the Bhatnagar-Gupta method, the method based on the principle of minimum additional scattering, and the finite element method. It is shown that the characteristic parameter method can be used to estimate a stress-strain state. The resulting analytical dependences of the angular velocity of torsion on time at the steady-state stage of creep can be used to determine the shear parameters of the orthotropic Hill potential in torsion experiments or to refine them if these parameters were obtained via other approaches.
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