Results 21 to 30 of about 39,844 (267)

Evaluation and Analysis of Bridge Modal Parameters Under Intelligent Monitoring Environment

Frontiers in Ecology and Evolution, 2022
After the bridge is completed, the structural materials will be gradually eroded or aged under the influence of climate, temperature, and building environment.
Tao Wang, Xuelian Guo, Guanxu Long, Xiaodong Liu   +3 more
doaj   +1 more source

Operational modal analysis using symbolic regression for a nonlinear vibration system

Journal of Low Frequency Noise, Vibration and Active Control, 2021
The existence of nonlinearity is an inevitable frequent occurrence that should be considered to accurately identify the modal parameters of a vibration system using operational modal analysis.
Xuchu Jiang, Feng Jiang
doaj   +1 more source

Modal identification of cylindrical shell using circumference reduction method

Nihon Kikai Gakkai ronbunshu, 2015
For precision improvement of the noise prediction, the dynamic characteristics of structures need to be verified. This paper focuses on modal identification of the cylindrical shell structures.
Atsushi KITAHARA, Takuya YOSHIMURA
doaj   +1 more source

Automation of Experimental Modal Analysis Using Bayesian Optimization

Applied Sciences, 2023
The dynamic characterization of structures by means of modal parameters offers many valuable insights into the vibrational behavior of these structures. However, modal parameter estimation has traditionally required expert knowledge and cumbersome manual
Johannes Ellinger, Leopold Beck, Maximilian Benker, Roman Hartl, Michael F. Zaeh   +4 more
doaj   +1 more source

Operational Modal Identification of Time-Varying Structures via a Vector Multistage Recursive Approach in Hybrid Time and Frequency Domain

Shock and Vibration, 2015
Real-time estimation of modal parameters of time-varying structures can conduct an obvious contribution to some specific applications in structural dynamic area, such as health monitoring, damage detection, and vibration control; the recursive algorithm ...
Si-Da Zhou, Li Liu, Wu Yang, Zhi-Sai Ma
doaj   +1 more source

Spatial Information in Autonomous Modal Parameter Estimation

Shock and Vibration, 2014
Recent work with autonomous modal parameter estimation has shown great promise in the quality of the modal parameter estimation results when compared to results from traditional methods by experienced users.
Randall J. Allemang, Allyn W. Phillips
doaj   +1 more source

Non-Proportionally Scaled-Down Model Approach to Solar Array Drive System Performance Prediction Considering Control Strategy

IEEE Access, 2018
In order to facilitate the performance prediction of solar array drive system (SADS) using the scaled-down model approach, a non-proportionally scaled-down model of an SADS is proposed in this paper.
Hong Guo, Tong Zhou, Jinquan Xu
doaj   +1 more source

TMD Damping for Structures with Uncertain Modal Parameters

Applied Sciences
The optimum tuning of the natural frequency and damping ratio of TMDs for structural modal parameters and various optimization criteria are well-known from the literature.
Felix Weber
doaj   +1 more source

Structural Modal Parameter Identification Method Based on the Delayed Transfer Rate Function under Periodic Excitations

Mathematics, 2023
The dynamic response transfer rate function (TRF) is increasingly used in the field of structural modal parameter identification because it does not depend on the white noise assumption of the excitation.
Yanxin Xu, Dongjian Zheng, Chenfei Shao, Sen Zheng, Hao Gu   +4 more
doaj   +1 more source

Parameter Study of Statistics of Modal Parameter Estimates Using Automated Operational Modal Analysis [PDF]

For any modal parameter estimation (MPE) method, there are a few control inputs that can have an impact on the modal parameter estimates. These control inputs are typically involving parameters like the maximum model order and how many time values or frequency lines that should be included in the MPE.
Christensen, Silas S., Brandt, Anders
openaire   +2 more sources