NEESR-Adapt-Struct : Next Generation Adaptive Seismic Protection Systems (Phase-II)

Control of Weakened Inelastic Structures Using Negative Stiffness (NSD) and Damping

In the second phase of this study, the concept of "weakening and damping" is verified in a prototype 1:3 scale moment-frame designed at University at Buffalo (UB) and tested by the researchers at UB, Rice Univeristy and Taylor Devices, Inc. The objective of this study is to verify the performance in yielding structures of the NSD, developed by the researchers and built by Taylor Devices, Inc. The test frame is subjected to a set of scaled and unscaled ground motions (from PEER collection) resulting in the yielding of columns in the first story. By adding the negative stiffness device the structure experiences lower accelerations and base shear, while the increased deformations are controlled and reduced by viscous-fluid supplemental dampers.

For more information and details pf testing plans consult the project website


This project is supported by the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Science Foundation under Award Number CMMI-0830391.

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