PSI - Issue 32

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 32 (2021) 340–344

XXIIth Winter School on Continuous Media Mechanics Experimental study of the processes of dynamic energy absorption of sand-lime brick Anatoly M. Bragov*, Dmitry A. Lamzin, Andrey K. Lomunov Research Institute of Mechanics , Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue , Nizhny Novgorod, 603022 , Russia

Abstract

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” The data obtained as a result of dynamic tests of sand-lime brick samples were used to estimate its energy intensity. The experiments were carried out according the Kolsky method using a split Hopkinson bar. The graphs of the specific energy absorption of sand-lime brick were obtained at different deformation rates as a result of the numerical integration of dynamic deformation diagrams. In addition, dependences characterizing the growth of energy characteristics with an increase of the strain rate are plotted. Comparison of the studied properties of sand-lime brick with same properties of other brittle media is carried out. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” Keywords: sand-lime brick; Kolsky method; energy absorption 1. Introduction Modern fundamental scientific research should be aimed at solving specific problems within of the directions defined in the Strategy of Scientific and Technological Development of the Russian Federation. Counteraction of technogenic threats and terrorism which are sources of danger for society and the state is distinguished among these directions. Technogenic or natural disasters as well as terrorist acts lead to significant destruction, large material damage and irreparable loss of life. One of the ways to solve these problems is based on the study of the properties of brittle building materials with time-varying impacts. Knowledge of the behavior of materials and the values of its

* Corresponding author. Tel.: +7-831-465-16-22 E-mail address: bragov@mech.unn.ru

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics”

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XXIIth Winter School on Continuous Media Mechanics” 10.1016/j.prostr.2021.09.049