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- Article name
- Modeling of nonisothermal viscoelastic-plastic deformation of flexible shallow reinforced 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
- flexible shallow shells / criss-cross reinforcement / coupled thermomechanical problem / viscoelastic-plasticity / dynamic loading / Ambartsumyan's theory / residual state / explicit numerical scheme
- Year
- 2024 Issue 1 Pages 11 - 21
- Code EDN
- XTBGZK
- Code DOI
- 10.52190/2073-2562_2024_1_11
- Abstract
- The initial-boundary problem of non-isothermal dynamic viscoelastic-plastic deformation of shallow reinforced shells is formulated. The non-isothermal and isothermal viscoelastic-plastic deformation of a fiberglass cylindrical panel with an orthogonal reinforcement structure has been studied. The shallow shell is frontally and briefly loaded with high-intensity excess pressure and may experience additional thermal loading by a heat flux from one of the front surfaces. It is shown that under mechanical loading of a curved panel from the side of its concave front surface, the dynamic calculation, as in the case of plates, can be carried out without taking into account the thermal response in the composite structure. With the same loading of the fiberglass shell from the side of its convex front surface, it is obligatory to take into account the temperature response in it. The presence of additional thermal loading of the reinforced panel by sources of non-mechanical origin leads to a significant change in the residual state of the structure after the termination of its oscillations.
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