Doppellagenblech aus einem Ober- und einem Untergurt

摘要

A double ply metal sheet for use in car construction has its stiffness increased and its weight reduced by comparison with metal sheets made of solid material. The embossed area of each boom raised above the base surface of the boom amounts to maximum 30 % of the total surface of each boom. A torque-transmitting auxiliary member is mounted between the centre lines of the bosses of each boom in contact with the bosses of the other boom. The torque vector lies in a plane parallel to the plane of the booms.