Title: Numerical investigation of a highly effective hysteretic nonlinear energy sink in shock mitigation
Authors: Tsiatas GC, Charalampakis AE
Type: Conference paper
Conference: 9th GRACM International Congress on Computational Mechanics
Venue: Chania, Greece
Date: 2018
Language: English

[abstract]

In this paper, the behavior of the novel Hysteretic Nonlinear Energy Sink (HNES) in seismic response mitigation is investigated. HNES is a modification of a type-I NES device which, in addition to the essential nonlinear cubic element, also incorporates a Bouc-Wen type hysteretic element and a negative stiffness element. The response reduction of a two-degree-of-freedom model of a shear building is studied against a strong ground motion using a HNES, a type-I NES and a traditional Tuned Mass Damper (TMD). For each case, the optimum configuration which minimizes the maximum absolute displacement of the top floor is determined using Differential Evolution, a robust metaheuristic algorithm. It is shown that HNES performance is vastly superior to both NES and TMD, with the additional advantage of insensitivity to changes in structural characteristics.

[cite as]

Tsiatas GC, Charalampakis AE. Numerical investigation of a highly effective hysteretic nonlinear energy sink in shock mitigation. Proc. 9th GRACM International Congress on Computational Mechanics, Chania, Greece; 2018.

[ paper]