Pyramid waffle core structure and method of fabrication

摘要

A structural core and associated method of forming such structure is disclosed. The structure includes a single layer of at least two rows of hollow pyramid-like structures. The hollow pyramid-like structures dampen acoustic noise and provide a truss-like structure that provides a high level of stiffness against transverse loads, shear stresses and side-loading. The hollow pyramid-like structures preferably have upward facing and downward facing open bases, and are formed in rows and columns. To aid in sound attenuation, the single layer is formed from a partially porous material, a woven thermoplastic, woven carbon fiber, fiberglass and paper. To provide additional structural integrity, the single layer is formed from a solid non-porous material such as a metal. The structural core may be included within outer panels to form acoustical or structural panels.

主权项

1. A structural core comprising:
a single layer of adjacent hollow pyramid-like structures, wherein the single layer is comprised of at least two rows of the adjacent hollow pyramid-like structures, each pyramid-like structure formed from four faces having substantially straight edges and having an open base, each open base in one of the at least two rows offset with respect to each open base in an adjacent another of the at least two rows, the edges of each adjacent pyramid-like structure combining to form a truss-like structure for providing support against transverse loads applied to the structural core.