PSI - Issue 36

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000 – 000 il l li t . i ir t. i i tructural Integrity rocedia 00 (2021) 000 – 000

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

ScienceDirect

Procedia Structural Integrity 36 (2022) 137–144

© 2022 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 conference Guest Editors Abstract The paper presents the calculation technique for static and dynamic perforation of thin high-strength steel plates using different models of material deformation and fracture. The calculations have been performed employing the finite element (FE) method and Johnson-Cook material deformation model. The material parameters are specified for Armox 500T steel. The influence of the indenter shape, loading rate, and contact conditions on the material deformation and fracture is investigated. The distribution fields of strains and stresses at different time points are constructed. The variation in the indenter velocity during the perforation of the plates is determined, and the change in the strain rate of the fracture zone is estimated. The obtained results are used to develop the techniques for testing high-strength steels under static and dynamic perforation. The comparison of the results of experiments and calculations will help to specify the values of the material models' parameters for modeling high-speed penetration processes. © 2022 The Aut hors. 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 conference Guest Editors Keywords: finite element method, perforation test, high-strength steels, fracture mechanics. 1. Introduction In the development of new military equipment under extreme conditions, including high-speed impact and explosive loads, a lot of attention has been paid to ensure an appropriate level of mine protection and ballistic str ct e a er rese ts t e calc lati tec i e f r static a a ic erf rati f t i i -stre t steel lates si iffere t els f aterial ef r ati a fract re. e calc lati s a e ee erf r e e l i t e fi ite ele e t ( ) et a J s - aterial ef r ati el. e aterial ara eters are s ecifie f r r steel. e i fl e ce f t e i e ter s a e, l a i rate, a c tact c iti s t e aterial ef r ati a fract re is i esti ate . e istri ti fiel s f strai s a stresses at iffere t ti e i ts are c str cte . e ariati i t e i e ter el cit ri t e erf rati f t e lates is eter i e , a t e c a e i t e strai rate f t e fract re z e is esti ate . e tai e res lts are se t e el t e tec i es f r testi i -stre t steels er static a a ic erf rati . e c aris f t e res lts f e eri e ts a calc lati s ill el t s ecif t e al es f t e aterial els' ara eters f r eli i -s ee e etrati r cesses. e t rs. lis e ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creati ec s.org/licenses/by-nc-nd/ . ) eer-re ie er res si ilit f t e c fere ce est it rs ey ords: finite ele ent ethod, perforation test, high-strength steels, fracture echanics. . I t ti I t l t f ilit r i t r tr iti s, i l i i -s i t l si l s, l t f tt ti s i t s r r ri t l l f i r t ti llisti 1st Virtual International Conference “In service Damage of Materials: Diagnostics and Prediction” Numerical simulation of deformation and fracture processes during static and dynamic perforation of thin plates from high-strength materials Valeriy Kharchenko, Eugene Kondryakov * , Oleg Katok, Roman Kravchuk Pisarenko Institute for Problems of Strength, National Academy of Sciences of Ukraine, 2 Timiryazevs’ka St., Kiyv-014, 01014, Ukraine t irt l I t r ti l f r I r i f t ri l : i ti r i ti l i , Eugene Kondry * , l t , isarenko Institute for roble s of Strength, ational cade y of Sciences of kraine, 2 i iryazevs’ka St., iyv-014, 01014, kraine

* Corresponding author. Tel.: + Tel.: +380-68-197-39-68; fax: +380-44-286-16-84. E-mail address: kondryakov@ipp.kiev.ua * orresponding author. el.: el.: 380-68-197-39-68; fax: 380-44-286-16-84. - ail address: kondryakov ipp.kiev.ua

2452-3216 © 2022 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 conference Guest Editors 2452-3216 2022 he uthors. ublished by I . . his is an open access article under the - - license (https://creativeco ons.org/licenses/by-nc-nd/4.0) eer-revie under responsibility of the conference uest ditors

2452-3216 © 2022 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 conference Guest Editors 10.1016/j.prostr.2022.01.015