1. bookVolume 26 (2019): Issue 4 (December 2019)
Journal Details
License
Format
Journal
First Published
20 Dec 2019
Publication timeframe
4 times per year
Languages
English
access type Open Access

Determination of Material Characteristics Necessary for Modelling of Marine Structures Exposed to Small-Calibre Bullet

Published Online: 24 Apr 2020
Page range: 105 - 111
Received: 09 Aug 2019
Accepted: 23 Dec 2019
Journal Details
License
Format
Journal
First Published
20 Dec 2019
Publication timeframe
4 times per year
Languages
English

The article presents the results of tests of impact properties of steel 1.3964 used on the construction of modern mine destroyers. Ships of this type, like any other military unit, may be exposed to small-calibre projectiles. Firing can be done, for example, from aircraft, drones or pirate units. The thickness of the plates used in the ship’s construction does not guarantee effective resistance to the projectile calibre 7.62 mm for all compartments of such ships. Thus, it is possible to modify the existing structure or apply additional solutions that will ensure a certain level of ballistic resistance. Solutions of this type are necessary in order to maintain the stability and buoyancy of the ship at the current level. During the tests, a stress-strain curve for steel 1.3964 was obtained, then the Johnson-Cook plasticity and damage model was proposed, which was used in the FEM simulation. The task was modelled as non-linear considering the deformation of both the sample and the projectile. The simulation was prepared in the CAE program, and then verified by an experiment on the shooting range. The results were presented in the form of diagrams and deformation figures, and were compared with photographs of samples and velocities after the specimen.

Keywords

[1] Szturomski, B., Modelowanie oddziaływania wybuchu podwodnego na kadłub okrętu w ujęciu numerycznym, Wydawnictwo AMW, 2016.Search in Google Scholar

[2] Johnson, G. R., Cook, W. H., A Constitutive model and data for metal subjected to large strains, high strain rates and high temperatures, Proceedings of the 7th International Symposium on Ballistics, 2009.Search in Google Scholar

[3] Abaqus, 6.10, PDF Documentation, Theory Manual, Simulia, Dassault Systems, 2010.Search in Google Scholar

[4] Carbajal, L., Jovicic, J., Kuhlmann, H., Assault Riffle Bullet-Experimental Characterization and Computer (FE) Modeling, Conference proceedings of the Society for Experimental Mechanics Series, Experimental and Applied Mechanics, 1007/978-1-4614-0222-077, 2011.Search in Google Scholar

[5] Szturomski, B., Świątek, K., Jurczak, W., Determination of dynamic characteristics of austenitic steel to be utilized in fem simulation and its verification, Scientific Journal of Polish Naval Academy, LIX, 2018.Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo