Armor assembly with a perforated layer

An armor assembly configured to be mounted to a vehicle to protect the vehicle from an expected explosion, said armor assembly comprising:

• at least two layers each of which contacts an adjacent one of said at least two layers, one of said at least two layers being a perforated layer and another one of said at least two layers being a covering layer;
• wherein said perforated layer is made of a material of a first density, and having a first surface configured to face in a direction towards the vehicle when the armor assembly is mounted thereto, and a second surface opposite thereto, said perforated layer being formed with a plurality of holes each having an opening at least at said second surface;
• wherein said covering layer is made of a material of a second density that is greater than said first density and configured to be permanently bent by said explosion into the openings, at opening covering portions of the covering layer, to such a depth as to restrict sliding movement at least between the at least two layers.