US 9,791,014 B1 · Enhanced damping materials using negative stiffness inserts

Abstract

In one embodiment, a vibration control apparatus is provided having a pair of face sheets with a core material in between. The core material comprising a positive stiffness material. A stack comprising a positive stiffness structure in series with a negative stiffness structure is located between the pair of face sheets, in parallel with the core material. The stack may be embedded in the core material. Various embodiments may include multiple stacks in parallel with each other. In some embodiments, the stack may include multiple positive stiffness structures in series with multiple negative stiffness structures. The multiple positive stiffness structures and negative stiffness structures may be interleaved.

Claims23

Dependent claims

A vibration control apparatus comprising:

a) a pair of face sheets with a core material extending therebetween, the core material comprising a positive stiffness material;
b) a stack located between the pair of face sheets in parallel with the core material, the stack comprising a positive stiffness structure in series with a negative stiffness structure;
and
c) wherein the core material comprises a cavity and wherein the stack is located within the cavity.

1 more element

Dependencies are inferred from the claim text.

Enhanced damping materials using negative stiffness inserts

Life of this patent

Enhanced damping materials using negative stiffness inserts

Life of this patent

Abstract

Claims23