On the basis of the applied theory of shells, a resolving system of equations is formulated and a method for the numerical solution of problems of nonlinear nonaxisymmetric deformation and fracture of composite cylindrical shells at explosive loadings of different intensity is developed. A model of progressive destruction of a composite shell based on the degradation of stiffness characteristics of individual layers in a multilayer package is elaborated, which depends on the fracture mode of the binder and fiber. The reliability of the technique considered is proved by comparing calculation results with known experimental data. Results of an analysis of the effect of nonaxisymmetric arrangement of an explosive charge on the fracture behavior of composite cylindrical shells with different reinforcement structures are presented.
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Acknowledgments
This study was partly financed by the State Program for the government support of the leading scientific schools of the Russian Federation (grant NSh-593.2014.8), within the framework of the base part of the government task (project No. 2014/134 2226) of the Ministry of Education and Science, and supported by grant according to Agreement of August 27, 2013, No. 02.B.49.21.0003 between the MES of the Russian Federation and NNSU and grants of the Russian Fund for Basic Research (No. 13-08-00742 and No. 15-08-04268).
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 52, No. 3, pp. 547-562, May-June, 2016.
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Abrosimov, N.A., Elesin, A.V. Numerical Simulation of the Nonlinear Deformation and Progressive Destruction of Composite Cylindrical Shells at Nonaxisymmetric Explosive Actions. Mech Compos Mater 52, 389–400 (2016). https://doi.org/10.1007/s11029-016-9591-2
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DOI: https://doi.org/10.1007/s11029-016-9591-2