Results 11 to 20 of about 252 (176)

Seismic control of multidegree‐of‐freedom structures using a concentratedly arranged tuned viscous mass damper

Earthquake Engineering &Structural Dynamics, Volume 52, Issue 14, Page 4708-4732, November 2023., 2023
Abstract Connecting a flexible supporting element to an inerter arranged in parallel with a viscous element yields a tuned‐mass damper‐like system, designated as a tuned viscous mass damper (TVMD). The advantage of a TVMD is that it exploits the flexibility of the supporting member, which is usually considered to compromise the energy‐dissipating ...
Jianfei Kang, Kohju Ikago
wiley   +1 more source

A Loewner‐Based System Identification and Structural Health Monitoring Approach for Mechanical Systems

Structural Control and Health Monitoring, Volume 2023, Issue 1, 2023., 2023
Data‐driven structural health monitoring (SHM) requires precise estimates of the target system behaviour. In this sense, SHM by means of modal parameters is strictly linked to system identification (SI). However, existing frequency‐domain SI techniques have several theoretical and practical drawbacks.
Gabriele Dessena, Marco Civera, Luca Zanotti Fragonara, Dmitry I. Ignatyev, James F. Whidborne, Lin Chen   +5 more
wiley   +1 more source

An Interpretable Method for Operational Modal Analysis in Time‐Frequency Representation and Its Applications to Railway Sleepers

Structural Control and Health Monitoring, Volume 2023, Issue 1, 2023., 2023
Operational modal analysis (OMA) enables the identification of modal characteristics under operational loads and conditions. Traditional frequency‐domain methods cannot directly capture modal changes over time, while existing time‐frequency representations are not sufficiently interpretable due to spurious modes and implicit parameter design.
Yuanchen Zeng, Chen Shen, Alfredo Núñez, Rolf Dollevoet, Weihua Zhang, Zili Li, Lin Chen   +6 more
wiley   +1 more source

Study on the Influence of the Internal Elastic Constraint Stiffness on the Vib‐Acoustic Performance of a Coupled Plate‐Cylindrical Shell System

Shock and Vibration, Volume 2023, Issue 1, 2023., 2023
Regarding the vib‐acoustic performance of internal coupled structures, basically all relevant studies have been confined to the classic form of connections. In this investigation, the boundary and internal elastic constraint matrices of the coupled structure are established, the vibration and sound calculation model of the coupled structure is then ...
Yonggan Sun, Yong Xiao, Xiang Liu
wiley   +1 more source

Modifikasi Perilaku Dinamik Struktur dengan Massa Terkonsentrasi

Rekayasa Mesin, 2020
One of the vibration problems that occurs at mining industries is when they increase production capacity as happen in the PT.Freeport Indonesia, and then we need to install a new machine with new rotary speed,  so that it will increase the speed of ...
Ramses Yohannes Hutahaean
doaj   +1 more source

Nonlinear Dynamic Responses of a Rotor‐Bearing System with Eccentric Squeeze Film Dampers

International Journal of Aerospace Engineering, Volume 2023, Issue 1, 2023., 2023
A squeeze film damper (SFD) is a commonly used component in aeroengine support structures. However, eccentric SFDs are often employed in practical applications. Existing research in this field has mainly focused on simple rotor models and frequency‐domain solution techniques.
Jiaqi Han, Wei Chen, Lulu Liu, Guihuo Luo, Fei Wang, Dakun Sun   +5 more
wiley   +1 more source

Suppressing Milling Chatter of Thin‐Walled Parts by Eddy Current Dampers

Shock and Vibration, Volume 2023, Issue 1, 2023., 2023
Machining vibrations often occur when working with thin‐walled workpieces. One effective method to mitigate these vibrations is by using a damper, which can enhance machining accuracy, surface finish, and tool life. However, traditional contact dampers have a drawback in that they require direct contact with the workpiece, leading to friction, wear ...
Junming Hou, Baosheng Wang, Hongyan Hao, Yuanping Xu   +3 more
wiley   +1 more source

Vertical Interaction Between a Driving Wheelset and Track in the Presence of the Rolling Surfaces Harmonic Irregularities

Romanian Journal of Transport Infrastructure, 2020
The driving wheelset is used in railway traction (locomotives, electric trains, trams, etc.) to support part of the weight of the suspended mass and to drive and brake the vehicle.
Mazilu Traian, Răcănel Ionuţ Radu, Gheți Marius Alin   +2 more
doaj   +1 more source

Exact Receptance Function of Cracked Beams and Its Application for Crack Detection

Shock and Vibration, 2019
The receptance function is very important which interrelates the harmonic excitation and the response of a structure in the frequency domain. This paper presents the exact receptance function of cracked beams.
Khoa Viet Nguyen, Mai Van Cao
doaj   +1 more source

Modeling Dynamic Frequency Response on Slab Track of Shinkansen Railway Based on Finite Element Method

Advances in Civil Engineering, 2022
The use of slab tracks in lieu of ballast tracks has introduced new dimensions in track dynamics in high-speed railways. To improve the performance of slab tracks under dynamic frequency responses caused by loads on the Shinkansen railway, the present ...
Majid Gholizadeh, Iman Aghayan, Farhad Hadadi   +2 more
doaj   +1 more source