Abstract Post switchgear of substation in a gale area is typical wind-sensitive structure. In order to reduce the wind-induced response post area, this paper, according theoretical formula optimal frequency ratio and damping TMD given by Den Hartog, tuned mass damper (TMD) proposed vibration first-order mode outside plane The Simulink simulation model simplified structure with established fluct...

In this paper, we describe the design and manufacturing of a viscous inertial mass-damper (VIMD) prototype. The damper parameters, mass, damping coefficient can be continuously adjusted. Experimental validations were carried out on VIMD with various parameters scaled sagged cable 19.47 m long for vibration mitigation, along simulation study using finite element method (FEM). experimental result...

The objective of this MCEER educational project is to develop Java-based Virtual Laboratories for Earthquake Engineering (VLEE) as a Tri-Center collaborative effort to produce online resources for earthquake engineering education. This task is a part of MCEER’s Center-wide effort to develop educational modules, in which various Java-Powered Virtual Laboratories (VLs) have been developed to prov...

Abstract Inerter-based vibration absorbers (IVAs), such as the tuned-mass-damper-inerter (TMDI), have become popular in recent years for earthquake protection of building structures. Previous studies using linear structural models shown that IVAs can achieve enhanced suppression, but at expense increased control forces exerted from IVA to host structure. The authors recently developed a bi-obje...

Advanced prosthetic knees for transfemoral amputees are currently based on controlled damper mechanisms. Such devices require little energy to operate, but can only produce negative or zero joint power, while normal knee joint function requires alternative phases of positive and negative work. The inability to generate positive work may limit the user's functional capabilities, may cause undesi...

Impulsive loads and walking loads can generate problematic structural vibrations in flooring-systems. Measures that may be taken to mitigate the problem would often be to consider the implementation of a tuned mass damper or even more advanced vibration control technologies; this in order to add damping to the structure. Basically also passive humans on a floor act as a damping source, but it a...