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The results of numerical investigation of the processes of dynamic deformation of
composite cylindrical shell protected inside with a cylindrically rolled packet of metallic
woven grids are presented. Internal loading is achieved through the explosion of spherical
charge. Mathematical model of metallic grids deformation suggested earlier is now provided
with experimental diagram of dynamic compression in the direction perpendicular to the grid
layers. In circumferential direction the value of effective elastic modulus is selected in series
of calculations. Estimated data is compared with the experimental results. The existence of
the gas-permeable cylindrical packet of grids leads to decrease of maximum circumferential
deformation of the outer shell.
Keywords: composite cylindrical shell; gas-permeable layer; internal impulse loading; simulation the dynamics. |
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