Application of computer modeling and simulation methods in verification of a system of additional armour installation

• Autorzy: Morka A. , Stanisławek S. , Niezgoda T. , Rudnik D.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses the problem of verifying systems of additional armour installation with the use of computer modelling and simulation methods. To achieve this purpose, numerical models of essential structural elements of the fastening arrangement, of the panel and of the representative portion of hull plate have been developed. Suitable constitutive models of the materials used and proper parameters thereof have been selected. Tested panels were subjected to group N11 standard loads in accordance with the Defence Standard NO-06-A 103/2005 and AP 14.5x114 mm B32 projectile impact in accordance with the guidelines included in STANAG 4569. The results obtained by means of numerical analyses were studied in particular in terms of establishing the probability of permanent plastic deformations in the elements of the additional armour fastening system. It was found that in the cases studied the impact of a projectile results in permanent (plastic) deformations in the fastening arrangement elements (bushings, welds), but in quantitative terms these were far from destructive. No disturbing stresses or strains have been identified in bolts, washers and threaded connections. The only situation that needs to be looked into are permanent strains in the crush area of blind rivet nuts observed for loads from single and repeated impacts. Analysis of the impact of an AP 14.5 projectile centrally along the axis of the bolt of the fastening arrangement showed lack of protective capacity in this area. The projectile perforates elements of the fastening arrangement with no significant resistance, while its energy decreases only slightly and thereby the threat of hull penetration is still retained.

Słowa kluczowe

EN

computer mechanics; simulation

• Wydawca: Ośrodek Badawczo – Rozwojowy Urządzeń Mechanicznych „OBRUM” sp. z o. o
• Czasopismo: Szybkobieżne Pojazdy Gąsienicowe
• Rocznik: 2016
• Tom: nr 1 (39)
• Strony: 183--190
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Morka A.

• Military University of Technology, Warsaw

autor

Stanisławek S.

• Military University of Technology, Warsaw

autor

Niezgoda T.

• Military University of Technology, Warsaw

autor

Rudnik D.

• Motor Transport Institute, Warsaw

Bibliografia

• [1] Wiśniewski A.: Pancerze, budowa, projektowanie i badanie. Wydawnictwa Naukowo-Techniczne, Warsaw, 2001. ISBN 83-204-2609-X.
• [2] Bhatnagar A.: Lightweight ballistic composites: Military and law enforcementapplications. Woodhead Publishing Limited, Michigan, 2006.
• [3] Galiński C.: „Pancerze reaktywne i aktywna ochrona balistyczna”, Szybkobieżne Pojazdy Gąsienicowe (15), No. 1/2002 pp. 1-11 OBRUM Sp. z o. o. Gliwice, 2002.
• [4] Defence Standard NO-06-A103: 2005. Uzbrojenie i sprzęt wojskowy. Ogólne wymagania techniczne, metody kontroli i badań. Wymagania środowiskowe.
• [5] STANAG 4569, Edn 1, Protection Levels for Occupants of Logistic and Light Armoured Vehicles, NATO/PFP Unclassified. 2005.