Abstract: A variable stiffness structure includes a first negative stiffness element configured to buckle in a first direction, a second negative stiffness element configured to buckle in a second direction opposite to the first direction, and an actuator operatively coupled to ends of the first and second negative stiffness elements to control a stiffness of the variable stiffness structure. The first negative stiffness element and the second negative stiffness element are mode-3 buckling beams.
Type:
Grant
Filed:
January 12, 2017
Date of Patent:
April 16, 2019
Assignee:
HRL Laboratories, LLC
Inventors:
Christopher B. Churchill, Geoffrey P. McKnight, Christopher P. Henry, David W. Shahan
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