Impact-absorbing structural component
View Patent ↗A shock-absorbing structure component has two cover layers and an intermediate layer that is arranged between them. The intermediate layer extends in an alternating form between the cover layers, with the material of the intermediate layer being selected such that it has a higher capacity elongation prior to breaking than that of the outer cover layer. The energy of an impact can thus be absorbed as the intermediate layer is stretched into a bag shape and the inner cover layer breaks off progressively.
1. An impact-absorbing structural component comprising:
first and second cover layers; and
an intermediate layer arranged between the cover layers; wherein
said intermediate layer comprises deformable stretchable means, responsive to application of an impulse on said impact absorbing component, which impulse exceeds the capacity of at least one of said cover layers to stretch prior to breaking, for forming a collecting sack which extends through an opening in one of said cover layers and applies a load to edges of said opening so as to widen said opening while absorbing energy;
the intermediate layer extends in an alternating form between the cover layers; and
the intermediate layer is formed of a material that has a higher breaking strain than at least one of the cover layers.
2. The impact-absorbing structural component according to claim 1 , wherein the intermediate layer has an undulating configuration.
3. The impact-absorbing structural component according to claim 1 , wherein the intermediate layer comprises angular portions.
4. The impact-absorbing structural component according to claim 1 , wherein the intermediate layer comprises portions having a trapezoidal cross section.
5. The impact-absorbing structural component according to claim 1 , wherein the intermediate layer is formed in the shape of nubs.
6. The impact-absorbing structural component according to claim 1 , wherein the intermediate layer is formed in the shape of an egg carton.
7. The aircraft part which is formed with an impact absorbing structure comprising:
first and second cover layers; and
an intermediate layer arranged between the cover layers; wherein
said intermediate layer comprises deformable stretchable means, responsive to application of an impulse on said impact absorbing component, which impulse exceeds the capacity of at least one of said cover layers to stretch prior to breaking, for forming a collecting sack which extends through an opening in one of said cover layers and applies a load to edges of said opening so as to widen said opening while absorbing energy;
the intermediate layer extends in an alternating form between the cover layers; and
the intermediate layer is formed of a material that has a higher breaking strain than at least one of the cover layers.
8. The aircraft part according to claim 7 , wherein the part comprises a wing.
9. The aircraft part according to claim 7 , wherein the outer cover layer has breaking strain lower than that of the intermediate layer.
10. The aircraft part according to claim 8 , wherein the outer cover layer has breaking strain lower than that of the intermediate layer.
11. An impact-absorbing component, comprising:
first and second cover layers; and
an intermediate layer arranged between the cover layers;
said intermediate layer comprises deformable stretchable means, responsive to application of an impulse on said impact absorbing component, which impulse exceeds the capacity of at least one of said cover layers to stretch prior to breaking, for forming a collecting sack which extends through an opening in one of said cover layers and applies a load to edges of said opening so as to widen said opening while absorbing energy;
wherein the intermediate layer has a three dimensional contoured configuration which couples the first and second cover layers, and is made of a material which has a greater breaking strain than a material of at least one of the cover layers.