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- Article name
- Non-stationary deformation of previously strained shells having variable thickness at impact energy release
- Authors
- OSTRIK A. V., , ostrik@ficp.ac.ru, Institute for Problems of Chemical Physics RAS, Chernogolovka, Russia
- Keywords
- composite materials / thin-walled constructions / thermal action of radiations and particles fluxes / non-stationary stresses and deformations state / implicit scheme of finite differences
- Year
- 2016 Issue 3 Pages 3 - 10
- Code EDN
- Code DOI
- Abstract
- The new mechanism of constructions destruction as a result of thermal action of radiations and particles fluxes was considered. It is supposed that interruption of construction operability comes owing to non-stationary processes of deformation and destruction. Non-stationary deformation and destruction take place as a result of action of quasi-stationary working loadings at saltatory change of construction rigidity. Jump of construction rigidity arises at volume and impact heating of material by means of radiations and particles fluxes. A numerical method for predicting of the thermal and tension-strain states of thin-walled orthotropic constructions having variable thickness under the action of energy fluxes of different physical nature was considered. Physical and chemical processes taking place as a result of heating of composite construction materials were taken into account. These processes are the binder pyrolysis and the chemical reaction of carbon and air flow components and ablation of carbon residue. Non-stationary processes occurring in the shell has been numerically simulated. Model of layer-by-layer destruction is used in this simulation.
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