Abstract: An energy absorption mechanism for a collapsible assembly such as a steering assembly for a vehicle. The mechanism includes first and second relatively displaceable members. The first and second members define an open gap extending in a direction transverse to the axial direction along which the assembly collapses. A metallic foam member is operably disposed between the first and second members to resist relative axial movement of the first and second members. The metallic foam member has an axially extending first portion with a transverse thickness that is greater than the transversely extending open gap. The metallic foam member is deformed as the assembly collapses and the first and second members force the metallic foam member to enter the transverse gap. By controlling the cross sectional area of the metallic foam member, the resistance force generated by the energy absorption mechanism can be controlled.

Abstract: A steering column assembly of the present invention includes a lower support bracket, an upper support bracket, and a jacket disposed within and extending along a longitudinal axis through the lower support bracket and the upper support bracket. The steering column assembly includes a yoke support housing and a plurality of tubes spaced from one another circumferentially about the longitudinal axis and interconnecting the yoke support housing and the upper support bracket. The invention includes a method of fabricating the assembly. An advantage of the present invention is to provide the steering column assembly that achieves a high section modulus, improved and predetermined stiffness characteristics, and improved packaging characteristics to hold various components such as ECL mechanisms, steering tube position sensors, BSTI switches, wires and the like.