Hydroformed and roll-formed cross sill assembly for vehicles and method of making same

摘要

A hydroformed and roll-formed cross sill assembly for a vehicle and method of making same includes a pair of hydroformed tubular side members. The hydroformed and roll-formed cross sill assembly also includes a roll-formed beam member disposed between the tubular side members and at least one weld to secure the beam member to each of the tubular side members.