Results 31 to 40 of about 252 (176)

Using the inverse finite‐element method to harmonise classical modal analysis with fibre‐optic strain data for robust population‐based structural health monitoring

Strain, Volume 61, Issue 1, February 2025.
Abstract Vibration‐based approaches to structural health monitoring (SHM) gained increasing significance for assessing the behaviour of existing structures because of their non‐intrusive nature and high sensitivity to damage. However, data availability often limits the application of SHM approaches.
Giulia Delo, Rinto Roy, Keith Worden, Cecilia Surace   +3 more
wiley   +1 more source

Wheel–Rail Vertical Vibration Due to Random Roughness in the Presence of the Rail Dampers with Mixed Damping System

Applied Sciences
In this paper, the vibration of a wheel running on a light rail equipped with rail dampers that use a mixed damping system (rubber–oil) is investigated under the excitation of random roughness on the rolling surfaces, to demonstrate the influence of such
Traian Mazilu, Dorina Fologea, Marius-Alin Gheți   +2 more
doaj   +1 more source

Vertical Random Vibration Analysis of Track-Subgrade Coupled System in High Speed Railway with Pseudoexcitation Method

Shock and Vibration, 2016
In order to reduce the ground-borne vibration caused by wheel/rail interaction in the ballastless track of high speed railways, viscoelastic asphalt concrete materials are filled between the track and the subgrade to attenuate wheel/rail force.
Xinwen Yang, Xiaoshan Liu, Shunhua Zhou, Xiaoyun Ma, Jiangang Shen, Jingchao Zang   +5 more
doaj   +1 more source

Adaptive Feedforward Vibration Control of Helicopter Cabin Floor Driven by Piezoelectric Stack Actuators: Modeling, Simulation and Experiments

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Active control of structural response is the most practical and effective approach to mitigate helicopter vibration and enhance ride quality. In this paper, adaptive feedforward vibration control is constructed for the helicopter cabin floor driven by piezoelectric stack actuators (PSAs).
Laishou Song, Yingquan Wang, Xiaoyu Shen, Ke Feng   +3 more
wiley   +1 more source

Synthesis of Robust Control for a Class of Nonlinear Systems With Parametric Uncertainties Through Modified Input‐Output Linearization via Feedback With Linear‐Nonlinear Decomposition

Journal of Control Science and Engineering, Volume 2025, Issue 1, 2025.
The article describes an alteration of the traditional method of input‐output feedback linearization by applying a linear‐nonlinear decomposition of a system. The modified method makes it possible to obtain an equivalent linear model of the system in the presence of parametric uncertainties and disturbances.
G. I. Mihalev, H. S. Stoycheva, S. Y. Yordanov, K. H. Ormandzhiev, S. I. Ivanov, K. K. Angelov, S. M. Sadinov, Crescenzo Pepe   +7 more
wiley   +1 more source

A ‘receptive’ boundary layer [PDF]

Journal of Fluid Mechanics, 2010
Receptivity is the process which describes how environmental disturbances (such as gusts, acoustic waves or wall roughness) are filtered by a boundary layer and turned into downstream-growing waves. It is closely related to the identification of initial conditions for the disturbances and requires knowledge of the characteristics of the specific ...
openaire   +2 more sources

Closed‐Form Design and Understanding of Vertical Inerter–Based Dampers for Wind Turbines

Structural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
Wind turbines with larger capacities face bending deformation due to taller towers and longer blades, necessitating mitigation against extreme seismic loads. A vertically installed inerter‐based damper, referred to as the tuned viscous mass damper (TVMD), is proposed alongside a closed‐form design approach.
Jianfei Kang, Zhipeng Zhao, Wang Liao, Ziyang Zhang, Liyu Xie, Songtao Xue, Yoshiki Ikeda   +6 more
wiley   +1 more source

Vibration Control of a Two-Link Flexible Robot Arm with Time Delay through the Robust Receptance Method

Applied Sciences, 2021
This paper proposes a method for active vibration control to a two-link flexible robot arm in the presence of time delay, by means of robust pole placement.
José Mário Araújo, Jason Bettega, Nelson J. B. Dantas, Carlos E. T. Dórea, Dario Richiedei, Iacopo Tamellin   +5 more
doaj   +1 more source

Bridge Flutter Prediction and Active Control Using Modal Information and Flutter Margins

Structural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
In this paper, a flutter prediction method based on flutter margins is proposed for streamlined bridges whose aeroelastic behavior can be well approximated by a two‐degree‐of‐freedom (2‐DoF) flutter model. The method enables prediction of the flutter boundary by extrapolating a curve of flutter margin versus wind speed, constructed using flutter ...
Xiaojun Wei, Ran Xia, Hao Wu, Xinran Guo, Zihan Tan, Yingying Wei, Xuhui He, Jun Li   +7 more
wiley   +1 more source

An Indirect Method for Accurate Identification of Short-Pitch Rail Corrugation Using Vehicle Interior Noise and Vibration Measurements and Train–Track Transfer Functions

Applied Sciences
Short-pitch rail corrugation is commonly found at curves or resilient track structures of the metro system, causing fatigue failure of key components of the train–track system.
Xiaohan Phrain Gu, Anbin Wang, Ziquan Yan, Linlin Sun   +3 more
doaj   +1 more source