Abstract
A negative stiffness shell has a convex first position, but can transition or snap to a concave second position under a force applied to the exterior surface of the shell in the convex first position. During the transition, the shell exhibits negative stiffness that permits a large amount of energy to be absorbed. The negative stiffness shell can withstand a high initial force threshold prior to transitioning. In the second, concave position the shell can still resist force. Moreover, it is possible for the shell to revert back to the first, convex position with minimal plastic deformation for subsequent use. The negative stiffness shells can be used collectively and/or in layers to increase the efficiency of the overall negative stiffness shell unit.
Recommended Citation
M. ElGawady and Y. Darwish, "Energy Dissipation Using Negative Stiffness Shells,", Sep 2021.
Department(s)
Civil, Architectural and Environmental Engineering
Patent Application Number
US17/261,840
Patent Number
US20210293295A1
Document Type
Patent
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2021 Curators of the University of Missouri, All rights reserved.
Publication Date
23 Sep 2021
Comments
Current Assignee: University of Missouri System