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- Article name
- Numerical models of non-stationary deformation and destruction of concretes (Review)
- Authors
- OSTRIK A. V., , ostrich@ficp.ac.ru, Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow region, Russia
KIM V. V., , kim@ficp.ac.ru, Institute for Problems of Chemical Physics RAS, Chernogolovka, Russia
- Keywords
- concrete / low-speed impact / equations of state / determining equations / numerical modeling
- Year
- 2020 Issue 4 Pages 11 - 24
- Code EDN
- Code DOI
- Abstract
- Works on mechanical and mathematical models of concrete deformation and destruction were reviewed. List of concrete models suitable for use in gasdynamic 3D-codes at the modern level of computer development is determined, taking into account the presence of constants of models and their adequacy in describing of behavior of concretes under low-speed impact. Mathematical models for concrete of modified deformation theory of plasticity and for models of Holmquist-Johnson-Cook type are described. The most used and experimentally justified sets of constants for these models are presented. Several correlation relationships allowing to estimate constants of models for developed high-strength concretes in case of absence of corresponding experimental data are given. Numerical algorithms for realizing of determining equations of concrete models have been developed, tested and described in detail. Numerical models were validated by comparison with experimental data on penetration depth and ballistic curves for the axisymmetric case. Satisfactory agreement was obtained on the results of the calculations with the experimental data. Concrete behavior calculation subroutines were used in gasdynamic 3D-code using the finite-dimensional particle method. Examples of solutions of three-dimensional problems of low-speed impacts on concrete barriers show the operability of the proposed numerical algorithms for mechanical and mathematical models of deformation and destruction of concrete.
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