Structured composite sheet

摘要

A composite sheet comprising two sheets joined by material closure provides on the one hand high global and local bending stiffness, and on the other hand very good forming behavior and very high load capacity in case of great deformations, as in case of a crash for example. Both sheets of the composite sheet comprise an at least partially structured surface and a smooth surface and both sheets are at least partially joined by material closure via the structured surfaces.

主权项

1. Composite sheet comprising two single layer sheets joined by material closure, wherein each of the two single layer sheets comprise an at least partially structured surface and a smooth surface, and each of the two single layer sheets are at least partially joined by material closure via the structured surfaces, such that projections of the structured surfaces of each of the two single layer sheets generate opposite surfaces at which both single layer sheets are joined in direct contact wherein the two single layer sheets consist of steel or a steel alloy, wherein the recesses have the form of open chambers, and wherein the chambers have a cross-section becoming larger in the opening direction.