Abstract—
The work considers the deformation and fracture of a reinforced concrete slab under the effect of an air shock wave. The research involves data from the “Blind Blast Test” experimental case. The slab is loaded by detonating an explosive in a shock tube. The numerical and experimental results are compared quantitatively and qualitatively. Quantitative comparison is made for the history of movement of key points of the reinforced concrete slab during deformation. Qualitative comparison is made for photographs of the destruction of a real reinforced concrete slab and distribution of the damage fields obtained by calculation. The numerical simulation is carried out using LS-DYNA code and the finite element method with an explicit time integration scheme. The CSCM (Continuous Surface Cap Model) model is used to model the concrete material. This model assumes that that the material is isotropic and has a three-invariant yield surface. The strength characteristics of the material depend on the rate of loading, and its damage is considered separately for compressive and tensile loads, which allows taking into account the partial recovery of compressive strength. The mathematical description of the model is given as part of the paper. Steel reinforcement of the concrete slab is modeled explicitly with beam finite elements. Finite element meshes of the concrete volume and reinforcing elements are coupled by means of kinematic dependences, automatically created by the design code. The properties of the reinforcement material are specified within the classical theory of elastoplastic flow with the criterion of limiting states in the Huber–Mises form and taking into account viscoplastic effects. The influence of boundary conditions, practical mesh convergence, and the capability of the mathematical model to predict the location of zones of material failure, displacement, and deformation of the structure are studied.
Similar content being viewed by others
REFERENCES
https://www.dynamore.de/de/download/papers/2014-ls-dyna-forum/documents/simulationsmethodik-iii/blind-blast-simulationa-a-validation-effort-assessment. Accessed May 3, 2020.
Murray, Y.D., User Manual for LS_DYNA Concrete Material Model 159, Publ. no. FHWA_HRT_05_062, Fed. Highway Administr., 2007.
Murray, Y.D., Abu-Odeh, A., and Bligh, R., Evaluation of LS-DYNA Concrete Material Model 159, Publ. no. FHWA_HRT_05_063, Fed. Highway Administr., 2007.
Mkrtychev, O.V. and Andreev, M.I., Numerical studies of strength of concrete cylinders for compression, Stroit. Mekh. Inzhen. Konstr. Sooruzh., 2019, vol. 15, no. 6, pp. 433–437. https://doi.org/10.22363/1815-5235-2019-15-6-433-437
Sharath, R., Arumugam, D., Dhanasekaran, B., and Subash, T.R., in Proceedings of the 11th European LS-DYNA Conference, Salzburg, Austria, May 9–11, 2017.
Pachocki, L. and Wilde, K., Numerical simulation of the influence of the selected factors on the performance of a concrete road barrier H2/W5/B, MATEC Web Conf., 2018, vol. 231, p. 01104. https://doi.org/10.1051/matecconf/201823101014
Olmati, P., Trasborg, P., Naito, C., Sgambi, L., and Bontempi, F., Modeling the response of concrete slabs under blast loading, J. Am. Concr. Inst., 2016. https://www.researchgate.net/publication/303025654_Modeling_the_Response_of_Concrete_S labs_Under_Blast_Loading. Accessed September 27, 2020.
ASTM A615 Standard specification for deformed and plain billet steel bars for concrete reinforcement, ASTM Int., 1992.
LS-DYNA®Theory Manual, LSTC, 2018. http://lsdyna.ru/documents/.
Rabotnov, Yu.N., Mekhanika deformiruemogo tverdogo tela (Deformable Solid Mechanics), Moscow: Nauka, 1988.
Opredelyayushchie zakony mekhaniki gruntov (The Governing Laws of Soil Mechanics, Collection of Articles), Nikolaevskii, V.A., Ed., Moscow, Mir, 1975.
Malvar, L.J. and Crawford, J.E., in Proceedings of the 28th Department of Defense Explosives Safety Seminar, Orlando, FL, August 18–20, 1998.
Chen, H., An introduction to Constrained_beam_in_solid, FEA Inform. Eng. J., 2017, no. Q1(6), pp. 14–18.
LS-DYNA® Keyword User’s Manual, Vol. 2L Material Models, Version R10.0, LSTC, 2017. http://lsdyna.ru/documents/.
Jiang, H. and Zhao, J., Calibration of the continuous surface cap model for concrete, Finite Elem. Anal. Des., 2015, vol. 97, pp. 1–19. https://doi.org/10.1016/j.finel.2014.12.002
Schwer, L., Blind blast simulation simple input concrete modeling. https://www.dynamore.de/de/download/papers/2014-ls-dyna-forum/dynamore/de/dow nload/papers/2014-ls-dyna-forum/documents/simulationsmethodik-iii/blind-blast-simulati ona-a-validation-effort-assessment. Accessed September 27, 2020.
Author information
Authors and Affiliations
Corresponding authors
Additional information
Translated by L. Trubitsyna
Rights and permissions
About this article
Cite this article
Gertsik, S.M., Novozhilov, Y.V. & Mikhaluk, D.S. Numerical Simulation of the Dynamics of a Reinforced Concrete Slab under an Air Shock Wave. J Appl Mech Tech Phy 62, 1176–1189 (2021). https://doi.org/10.1134/S0021894421070099
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0021894421070099