Energy dissipation system for an armored vehicle having shear fingers and crushable sections
An armored vehicle includes a body, a frame member extending longitudinally along a length of the body, and an armor assembly. The armor assembly includes an armor panel and a blast attenuator. The armor panel extends laterally outward from the frame member and is positioned at least partially underneath the body, and the blast attenuator is configured to deform during a blast event. The frame member is coupled to an inner portion of the armor panel with the blast attenuator.
1. An armored vehicle, comprising:
a body;
a frame member extending longitudinally along a length of the body; and
an armor assembly including:
an armor panel extending laterally outward from the frame member and positioned at least partially underneath the body; and
a blast attenuator including a crushable section configured to deform during a blast event, a first interface wall, and a second interface wall, wherein the frame member is coupled to an inner flange of the armor panel with the blast attenuator, the inner flange disposed laterally inward, closer to a longitudinal centerline of the armored vehicle relative to an outer portion of the armor panel, wherein the first interface wall and the second interface wall extend horizontally and are coupled to the frame member by the crushable section, and wherein the first interface wall is vertically spaced from the second interface wall thereby defining a horizontal slot that directly receives the inner flange of the armor panel.
2. The armored vehicle of claim 1 , wherein the crushable section includes one or more walls having a thickness that is less than a thickness of the frame member and the armor panel.
3. The armored vehicle of claim 1 , wherein the crushable section includes one or more walls that define a first crush void and a second crush void.
4. The armored vehicle of claim 3 , wherein the one or more walls includes an upper wall, a lower wall, and at least three intermediate walls disposed between the upper wall and the lower wall.
5. The armored vehicle of claim 4 , wherein at least one of the at least three intermediate walls is angled relative to the armor panel such that the crushable member is configured to direct a blast wave towards the frame member during the blast event.
6. The armored vehicle of claim 1 , wherein the frame member includes a sidewall and a flange extending outward from the sidewall.
7. The armored vehicle of claim 1 , further comprising a second blast attenuator configured to deform during the blast event, wherein the second blast attenuator is coupled to the outer portion of the armor panel.
8. The armored vehicle of claim 7 , wherein the second blast attenuator comprises a crushable member including a first interface wall and a second interface wall, wherein the first interface wall is spaced from the second interface wall thereby defining a slot configured to receive the outer portion of the armor panel.
9. The armored vehicle of claim 8 , wherein the armor panel defines a first armor panel, wherein the armor assembly further comprises a second armor panel having a lower edge and configured to be coupled to a cab assembly, wherein the second blast attenuator is disposed between the lower edge of the second armor panel and the outer portion of the first armor panel.
10. The armored vehicle of claim 9 , wherein the lower edge of the second armor panel is spaced an offset distance from the second blast attenuator, the offset distance facilitating a flex of the first armor panel during the blast event before the upper wall of the second blast attenuator contacts the second armor panel.
11. The armored vehicle of claim 1 , wherein the frame member comprises at least one of a frame rail and a tunnel.