Composite disc axial dampener for buildings and structures
A seismic axial dampener device is constructed of a multitude of composite or metallic conical compression discs and an exo-structure capable of dampening both tension and compression cycles of a building structure due to a seismic, explosion, or wind event. The dampener reacts and dampens the loading in both tension and compression along the axis of the cross brace in linear-elastic bending, creating internal hoop stress, and not through shear of the dampener device.
1. A method of bracing a structure, comprising:
connecting a brace between a first structural member of a building and a second structural member of a building, the brace comprising
a plurality of discs disposed coaxially to form a disc stack, the disc stack being concentric to a single central axis of the brace, the discs comprising fibers within a polymer resin matrix, the fibers comprising carbon, aramid, or glass,
each disc having a concave surface and a substantially perpendicular convex surface,
the discs disposed in pairs such that the convex surfaces of alternating pairs are oriented in substantially opposed directions, wherein
the brace dampens loading in both tension and compression along the single central axis in linear-elastic bending.
2. The method of claim 1 , wherein the brace further comprises:
a first end plate disposed at a first end of the disc stack;
a center plate disposed at a midpoint of the disc stack;
a second end plate disposed at a second end of the disc stack,
the second end plate adapted to move coaxially with the disc stack relative to the center plate.
3. The method of claim 2 , wherein the brace further comprises:
an outer housing disposed about the disc stack from the center plate and extending coaxially with the disc stack at least as far as the second end plate.
4. The method of claim 2 , wherein the first end plate and the second end plate are coaxially connected.
5. The method of claim 2 , wherein the brace further comprises:
a first end connection disposed on the first end plate and adapted to connect to a first structural member of a building;
a second end connection disposed on an end of the brace opposite the first end connection and adapted to connect to a second structural member of a building.
6. The method of claim 1 , wherein the plurality of discs are substantially conical.