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METAL-COMPOSITE HYBRID SYSTEM FOR CRASH ENERGY ABSORPTION
ES2386269
The present invention fits in the transport sector, in particular as regards structural component parts with energy absorption in shock. The system comprises a metal part that is similar to current (square section metal profile) beam and forming a hollow body and a core of composite material. The composite serves as the core energy absorber, while the metal part serves to maintain the stability of the vehicle structure and continue playing its role as a means of main effort. One of the features is that the composite material core is a component itself, so that it can be easily introduced (adapting the geometry) without any substantial change in the manufacturing process of the vehicle. What is achieved with the hybrid system is the one hand, improve the absorption of energy due to work done by the composite material and on the other hand, it causes the steel work differently than it does alone, and that the fact of having a deformed causes also the transverse axis and not only in the longitudinal (the higher deformation, increased energy absorption) core. The energy absorber inner core made of different materials can include: Thermoplastic. + epoxy resin carbon fiber. structural foams (PET, PVC, cork). The bonding between the metal tube and the core can be accomplished by structural or adhesive detent.
All current solutions for stringers have a common point, yes that are based on metal structures, either steel or aluminum. The present invention provides as a novelty the fact develop a hybrid metal composite structure, so that advantage of the best features of each material is removed. Todas las soluciones actuales para largueros tienen un punto en común, y es que están basadas en estructuras metálicas, ya sea en acero o aluminio. La presente invención aporta como novedad el hecho de desarrollar una estructura híbrida metal composite, de modo que se saque provecho de las mejores características de cada material.