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- Article name
- Refined model of non-isothermal elastic-viscoplastic deformation of reinforced cylindrical shells under dynamic loading
- Authors
- YANKOVSKII A. P., , lab4nemir@rambler.ru; yankovsky_ap@rambler.ru, Khristianovich Institute of Theoretical and Applied Mechanics the SB RAS, Novosibirsk, Russia
- Keywords
- cylindrical shells / reinforcement / thermoelastic-viscoplasticity / dynamic deformation / linked thermomechanical problem / refined theory of bending / Ambartsumian theory / explicit numerical scheme
- Year
- 2023 Issue 3 Pages 13 - 24
- Code EDN
- KCTNXL
- Code DOI
- 10.52190/2073-2562_2023_3_13
- Abstract
- The initial-boundary problem of non-isothermal elastic-viscoplastic bending deformation of closed circular cylindrical reinforced shells is formulated. Wave processes in such structures and their poor resistance to transverse shear are modeled within the framework of an refined bending theory. The materials of the phases of the composition are isotropic. Their inelastic deformation is described by the equations of the theory of flow with isotropic hardening. A linked thermomechanical problem is considered. The two-dimensional nonlinear dynamic problem is integrated using an explicit numerical scheme. The thermoelastic-viscoplastic and thermoelastic-plastic dynamics of flexible long fiberglass and metal-composite cylindrical shells with an orthogonal 2D-reinforcement structure has been studied. It has been demonstrated that in case of axisymmetric dynamic bending, fiberglass shells can be additionally heated by 12-13 оC, and similar metal-composite shells by almost 60 оC. The mechanical response of such structures must be calculated according to the refined theory of bending, taking into account the dependence of the plastic properties of their composite components on the strain rate.
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