Abstracts Archive

Locally resonant metamaterials (LRMs), with periodic elements that exhibit local resonance, have been recently investigated by numerous researchers as a means to pursue vibration atten-uation and wave manipulation. These structures are able to generate bandgaps in specific fre-quency ranges dependin...

The active vibration absorber has been successfully used, both in laboratory and actual facilities, to mitigate the human-induced vibrations taking place in lively, low-damping structures such as long-span floors or pedestrian footbridges. Nonetheless, the dynamic behavior of the electrodynamic proo...

Seismic isolation, which at first used only for special applications, is nowadays gaining increased popularity in the field of protecting existing structures from seismic loading and it even constitutes one of the standard methods for seismic upgrade. This method can be achieved with various devices...

Wind Turbines (WT) are rapidly becoming a significant contributor of the total energy produc-tion grid. Nowadays, a typical WT has the capability of 15MW power generation with larger rotors and towers with the average tower height being 120m. These slender and flexible struc-tures are vulnerable to ...

Recently, a novel Sliding Keys on Inclined Deflecting-cantilever (SKID) device was proposed for application with Post-Tensioned (PT) frames. The SKID device has a triangular-shaped hysteretic curve; thus, it can provide hysteretic damping without an activation threshold in the PT frame. The properti...

Engineering structures are known to be susceptible to the adverse effects of dynamic vibration, which can affect serviceability and/or integrity, resulting to limited or unsafe operation and damage. The mitigation of the effects of vibration excitation sources can be accomplished via external device...

The high demands of renewable energy have instigated the increase of wind farms’ capacity, which have required larger wind turbines and, consequently, monopile foundations of larger dimensions. The installation of offshore monopiles, which is typically performed by an impact hammer, generates high...

Recently, researchers have proposed an innovative negative stiffness-based vibration control concept, namely the KDamper absorber. The envisaged mechanism comprises a combination of appropriate stiffness, damping and mass elements, including a negative stiffness element. Previous studies have formul...

An inerter is a mechanical two-terminal device that creates a force proportional to the relative acceleration between its terminals. A unique feature of this device is that it has the potential to produce high dynamic mass while its static mass remains at a fixed value. These devices, used as tuned ...

In this research paper, the KDamper concept is extended and applied to multiple floors of exist-ing low-rise, mid-rise, and high-rise building structures. Inspired by the concept of MTMDs, multiple EKDs (d-EKDs) are installed and distributed along the height of the structure, aiming to achieve seism...

In important facilities such as nuclear power plants or plant facility data centers, the safety of both the structure as well as the facilities and equipment installed in the structure must be ensured. This is because when the equipment installed in the structure is damaged, nuclear power plants can...

An Acoustic Black Hole (ABH) is a scatterer, embedded in a panel, allowing passive vibration control without adding mass. In practice, it is achieved by means of a local reduction in thickness (axisymmetric disc with a parabolic profile) and the addition of a thin viscoelastic coating in a central r...

Damping enhancement of slender beam-like structures continues be an underlying motive behind current interests of many engineering disciplines, including aerospace structures. In particular, with the increased focus surrounding High Aspect Ratio Wings (HARWs) owing to their potential in reducing ind...

The contribution presents recent progress in development of predictive control methods for optimal mitigation of impact excitations. The attention is focused on a control of semi-active system subjected to an impact of a rigid object moving with initial velocity. Objective of the solved control prob...

The need to control and reduce the dynamic responses of a structure is strongly found. A standard technique to lower structural vibration is to use elements capable of dissipating energy. Here, the proposal to add a hysteretic element makes it possible to obtain a double result: to increase the stru...

In the context of hybrid passive control, the effectiveness of the Tuned Liquid Column Damper (TLCD) has been well-established for the seismic vibration control of base-isolated (BI) systems both numerically and experimentally. In contrast to the previous studies on TLCDs, the present study explores...

The Reduced Column Section (RCS) approach is a design approach proposed by the Authors to redesign the connection between the wind tower and its foundation. The proposed segment of hourglass shape is a passive vibration-control device that combines the advantages of several approaches used in seismi...