PSI - Issue 20

ScienceDirect Available online at www.sciencedirect.com Sci nceD rect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 20 (2019) 119–123

1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Experimental studies of the materials strength properties of magazine materials of explosive reactive complexes for drilling the rocks of the different strength categories Mikhail Kelner, Maxim Pugachev*, Nikolay Ovchinnikov Institute of Machine Science named by A.A.Blagonravov, Russian Academy of Sciences, 4 Maly Kharitonyevsky Pereulok, Moscow, 101990, Russia Abstract The paper presents the results of experimental studies of the structural materials mechanical properties that planned to be used in thin-walled shells with concentrated explosive charges. For the explosive charges shells manufacture or the reflectors manufacture it is important to have the static characteristics of their constituent materials, since at the initial stage it is necessary to exclude those that have unsatisfactory strength properties. The following structural materials were selected for research: steel 30HGSA with heat treatment (НТ), steel 65G with НТ, bronze, steel 3, steel 20, steel 45, steel 30HGSA, steel 65G. Experimenta l studies of shells for charges have shown that after a shell is detonated, hemispheric cavities form on the surface of lead cylinders, and the shape and size of the cavity formed depends on the tensile strength of the shell material. The results of tension tests are generally correlated with the results of charge shells tests that were made using the stand. Recommendations are given on the structural materials usage for the pulsating explosive devices manufacturing. 1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Experimental studies of the materials strength properties of magazine materials of explosive reactive complexes for drilling the rocks of the different strength categories Mikhail Kelner, Maxim Pugachev*, Nikolay Ovchinnikov Institute of Machine Science named by A.A.Blagonravov, Russian Academy of Sciences, 4 Maly Kharitonyevsky Pereulok, Moscow, 101990, Russia Abstract The paper pres nt the results of experimental studies of the struc ural materials mechanical properties tha planned to be used in thi -w lled shells with concentrated explosive harges. For the explosive cha ge hells manufacture or the r fl ctors manufacture it is important to have the static characteristics of their c nstituent materials, since at th initial stage it is necessary to exclude those that have unsatisfac ory strength properties. The following structural mat rials were select d for research: stee 30HGSA with heat tre tm nt (НТ), steel 65G with НТ, bronz , steel 3, steel 20, steel 45, steel 30HGSA, steel 65G. Experimenta l studies of sh lls for charges have shown that after a hell is detonated, hemispheric cavities fo m on the surface of lead cylinders, and the shape and size of cavity f rmed d pends on he tensil strength of the shell material. The results of tension tests ar generally corr lated with the results of charge shells tests that were made using the stand. Recommendations are given on the structural materials usage for the pulsating explosive devices manufacturing.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Autho (s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers Keywords: strength of warhead casing, explosive devices, tensile strength Keywords: strength of warhead casing, explosive devices, tensile strength

1. Introduction Belchenko E. L. et al. (2014) proposed for hard-to-reach regions, incl. Far Eastern, use portable explosive rocket complexes (PERC), which allow to drill wells in the rocks of different strength categories using concentrated explosive charges (EC), that destroy the rock with an ejection type explosion. PERC have high performance and can 1. Introduction Belchenko . L. et al. (2014) proposed for hard-to-reach regions, incl. Far Eastern, use portable explosiv rocket complex s (PERC), which allow to drill wells in the rocks of different strength cat gories using concentrated explosive charges (EC), that destroy the rock with an ejection type explosion. PERC have high performance and can

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers * Corresponding author. Tel.: +7-499-135-7790 ; fax: +7-499-135-3517 . E-mail address: pugachevmax@mail.ru 2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers * Correspon ing author. Tel.: +7-499-135-7790 ; fax: +7-499-135-3517 . E-mail address: pugachevmax@mail.ru

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 10.1016/j.prostr.2019.12.126