Energy attenuating container mounting system
Methods and apparatus are provided for an energy attenuating mounting system configured for attaching a container to a vehicle bed at a plurality of discrete mounting points around the container. The mounting system may include a bracket attached to the container at each mounting point, and a plastically deformable energy attenuating member extending from an upper end attached to the bracket, to a lower end attached to the vehicle bed substantially below a bottom of the container, thereby supporting the container in an elevated position. The energy attenuating member is configured to remain rigid and un-deformed if a load carried by the energy attenuating member is below a threshold value, and to attenuate energy by plastically deforming in a predictable manner if the load exceeds the threshold value.
1. An energy attenuating mounting system configured for attaching a container to a vehicle bed at a plurality of discrete mounting points around the container, the mounting system comprising:
a bracket attached to the container at each mounting point; and
a plastically deformable energy attenuating member extending from an upper end attached to the bracket, to a lower end attached to the vehicle bed substantially below a bottom of the container, thereby supporting the container in an elevated position, wherein the energy attenuating member is an elongated metal bar with straight sections intersecting at corner bends, and flanges at the upper and lower ends thereof for securely moment-restraining the upper and lower ends to the bracket and vehicle bed, and wherein the energy attenuating member is configured to remain rigid and un-deformed if a load carried by the energy attenuating member is below a threshold value, and to attenuate energy by plastically deforming in a predictable manner if the load exceeds the threshold value.
2. The energy attenuating mounting system of claim 1 , further comprising a rod at each mounting point attached at a lower end thereof to the vehicle bed, and extending upward through a clear hole in the bracket, wherein the bracket is trapped under a nut or bolt head at an upper end of the rod.
3. The energy attenuating mounting system of claim 2 , wherein the lower ends of the energy attenuating member and rod are attached to an intermediate plate configured for attachment to the vehicle bed.