Abstracts Archive

The concept of tensairity structure is interesting for numerous applications in several application fields according to the low ratio between self-weight and its loading capacity. The basic components of a tensairity are represented by a cylindrical pneumatic/inflatable element, a couple of cables w...

Vibration absorption has been studied for over a century by systems and dynamics specialists from variety of different perspectives. Actively tuned class occupies a large place in the literature. The tuning operation imparts increased efficacy of the absorber when removing the undesired oscillations...

This study presents a novel decentralized active control algorithm for vibration mitigation of structures subjected to seismic excitations. In recent years, the advancement in instrumentation schemes, i.e., sensors, actuators, and computing units is the reason behind the growing interest in the dece...

The subject of this paper is the control of flexural waves on an infinite beam using a vibration neutraliser located in the far field of a forcing input. The neutraliser analytical model consists of a beam carrying three concentrated masses that can be further simplified to a mass-spring-mass system...

Floating offshore wind turbines (FOWTs) are the largest rotating structures on the earth. FOWTs are very flexible and dynamically sensitive, they are also installed in very harsh environments and exposed to stochastic environmental loading from wind and ocean waves. In recent years dampers have been...

This paper proposes a multi-level system modeling for studying the structural behavior of an Offshore Wind Turbine (OWT) with a flexible monopile foundation considering the Pile-Soil Interaction (PSI). This analysis shows that the structural response is affected by a signifi-cant uncertainty due to ...

This paper addresses the optimal tuning and numerical performance assessment of regenerative tuned mass damper inerters (RE-TMDIs) in three different configurations with non-grounded inerters attached to cantilevered primary structures under Gaussian white noise base excitation. The studied RE-TMDI ...

Due to its low prime costs and stable dynamic behavior, the tuned liquid column damper (TLCD) has been a reliable structural vibration control device since its first adoption for civil engineering structures. The TLCD can mitigate lateral vibrations in uniaxial direction. It consists of two vertical...

Wind power is a sustainable and renewable energy source which becomes fundamental in order to meet the worldwide rising demand for energy. New onshore and offshore wind farms will be rapidly constructed in challenging environments, especially in earthquake-prone areas. Although a flexible structure,...

The magnetic suspension control system is the key component of the maglev train to ensure the suspension gap between the maglev train and its guideway at a stable value. In general, the maglev car body is supported by several bogies which consist of two suspension modules. The two suspension modules...

Ground-borne vibration due to railway traffic is an increasingly important environmental concern. As it may cause malfunctioning of sensitive equipment and discomfort to people. Following earlier developments of metamaterials in the field of electromagnetics, photonics, and phononics, the aim of thi...

Offshore wind is a primary source of renewable energy. The international sustainability targets - set in view of the energy transition - require a significant increase of offshore wind capacity. This leads to ever increasing size of offshore wind turbines (OWTs), water depth of installation and dist...

In recent decades, height-wise urban development relying on slender high-rise buildings with rectangular floorplans is booming in all major cities worldwide. The construction of such buildings is expected to intensify even more over the next years to accommodate pressing demands for residential and ...

Floating Offshore Wind Turbines (FOWTs) are have been proposed in recent years for deep water deployment where the installation of traditional fixed bottom turbines would be impossible. This opens up vast areas of the marine environment for offshore wind development. FOWTs have been realised in rece...

Liquid storage tanks are an integral part of any industry, including chemical, gas, or nuclear and are the fundamental civil engineering structure employed in public utility for various functions, including the delivery of drinking water and the suppression of fires. Storage tanks are more prone to ...

The study aims to investigate the effectiveness of tuned mass damper inerter (TMDI) for vibration enhancement of offshore wind turbine subjected to wind and wave forces. H2 optimization method is used to find the optimal parameters of the TMDI. Wind velocity is varied to examine the performances of ...

In this study, the adverse effect of an inadequately designed input control force is investigated in exciting the torsional modes of a structural system. The initial formulation is developed based on a generalized symmetric structural system under control input that is designed to regulate only the ...

There is a recognized need to tackle issues of vibration control making use of recent developments of data-driven modelling. In structural dynamics, data driven modelling has been extensively investigated, including with probabilistic approaches to quantify the uncertainty in dynamic systems. Howeve...

Tuned vibration neutralisers are used to suppress the vibration of a host structure subjected to external harmonic forces. Although they are analogous to tuned vibration absorbers, the primary difference is that while absorbers are usually designed with optimum damping to attenuate vibration in a fr...

Earthquakes, strong wind or human activity are examples of potential sources of vibrations that might cause damage to structural elements or human discomfort in slender structures. To control vibrations, the mitigation effect of well-known passive control systems such as Tuned Mass Dampers (TMDs) ca...

Offshore Wind Turbines (OWT), nowadays, are designed with greater energy power capacities and thus they are comprised of components of larger dimensions in accordance with the increase in the energy demands worldwide. In order to install these larger OWTs, floating heavy lift vessels, operating unde...

This paper presents an optimal design of a passive-adaptive Pendulum-Tuned Mass Damper (PTMD) to mitigate the structural vibrations of Offshore Wind Turbine (OWT) with a flexi-ble monopile foundation considering the Pile-Soil Interaction (PSI). The OWT basis on the 5-MW baseline proposed by the Nati...

The dynamic performance evaluation of two adjacent single-degree-of-freedom structures (SDOF) connected with novel negative stiffness-inerter-based dampers (NSIDs) is studied under base excitation. The base excitation is modelled as a stationary white noise random process. The equations of motion ar...