Blast absorbing structures and system for use in absorbing blast forces exerted on a floor of a personnel cabin of a vehicle, are disclosed. The blast absorbing flexing structure comprises a bottom section forming a floor of the cabin, a first side section and opposing second side section, each side section extending from the bottom section and including a plurality of steps along a length of the second side section. The steps flex in response to a blast force. In another embodiment, the blast absorbing expanding structure comprises a force abatement device forming a floor of the cabin, a cover plate having a plurality of slots arranged around a perimeter of the plate. The cover plate is movable between a neutral position and a blast force position to diminish the blast forces prior to the blast forces to reaching an occupant of the cabin.
1. A blast absorbing flexing structure for use in absorbing blast force energy exerted on an underside of a personnel cabin of a vehicle, the structure comprising:
a bottom section forming a floor of the cabin;
a first side section extending from the bottom section, the first side section having a plurality of steps along a length of the side section, each of the plurality of steps vertically progressing to another step;
a second side section extending from the bottom surface and opposite to the first side section, the second side section having a plurality of steps along a length of the second side section, each of the plurality of steps vertically progressing to another step; and,
wherein the bottom section and side sections form an absorption component cooperatively moveable between an initial position and a blast force position to diminish the blast forces reaching an occupant of the cabin, wherein the bottom and side sections form an interior of the vehicle.
2. The blast absorbing flexing structure of claim 1 , wherein the side sections flex in response to a blast force exerted on the underside of the vehicle.
3. The blast absorbing flexing structure of claim 1 , wherein the structure further includes at least one energy absorbing support.
4. The blast absorbing flexing structure of claim 3 , wherein the energy absorbing support receives an initial blast force exerted on the underside of the vehicle.
5. The blast absorbing flexing structure of claim 4 , wherein the energy absorbing support deforms in response to the initial blast force.