Is a hard top layer always the right choice?
other
Operational requirements for vehicles result in a constant trade-off between protection and mobility. Mobility limits the weight of the armoured vehicle despite the fact that it needs protection against several threats. In metallic armour systems the hardest material is normally used at the outside of the vehicle. This paper shows that in some situations it is beneficial to use the harder material at the inside of an armour system. Experiments are done with three types of ammunition from level 1 and 2 of the STANAG 4569 on several metallic armour systems of steel and aluminium. Furthermore, numerical simulations are performed to help understand the phenomena involved in these impact situations. The stripping of the jacket off the projectile core seems to be an important aspect when an armour system is designed out of two different materials. It can be beneficial to place the ‘soft’ material in front of the ‘hard’ material.
TNO Identifier
183580
Source title
23rd International Symposium on Ballistics, Tarragona, Spain, 16-20 April 2007
Pages
1495 - 1502
Files
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