Energy absorbers for roof system and other vehicle structures

摘要

An energy absorber for an overhead system in a vehicle, wherein the energy absorber comprises a sound absorption device. To improve the sound absorption, it is provided that the sound absorption device comprises at least one acoustic membrane formed within a protrusion formed in an energy absorbing panel member.

主权项

1. A body panel system for a vehicle, comprising:
a rigid exterior body panel; an interior trim liner; and an impact-energy absorbing panel member disposed between the body panel and trim liner, wherein the panel member comprises protrusions adapted to deform in a crash to absorb impact energy and at least one acoustic membrane adapted to absorb acoustic energy as a Helmholtz resonator, wherein at least one protrusion includes a foot region that is entirely open ended, wherein the acoustic energy stimulates the at least one acoustic membrane resulting in a loss of acoustic energy, and wherein a level of acoustic pressure is reduced as a result of the loss of acoustic energy.