Results 261 to 270 of about 1,921,561 (299)
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FINITE DIFFERENCE FORMULATION FOR MODAL PARAMETER ESTIMATION
Journal of Sound and Vibration, 2000Summary: We deal with a new finite difference method for modal parameter estimation. This method uses formulas which involve differences between the frequency response data at three frequencies in the vicinity of a natural frequency to estimate this natural frequency together with the damping and the residue.
Yin, H. P., Duhamel, D.
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ON THE UNIQUENESS OF MODAL PARAMETER ESTIMATION
Journal of Sound and Vibration, 1996We examine the question of uniqueness of solution to the modal parameter problem by applying a least-squares output error estimator to a six-degree-of-freedom shear building using both a two- and a six-parameter model. Multiple solutions are located by initiating the iterative parameter estimation algorithm from random starting points.
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Modal Parameter Estimation on Automotive Development
SAE Technical Paper Series, 2012<div class="section abstract"><div class="htmlview paragraph">Modal parameter identification is used to identify those parameters of the model which describe the dynamic properties of a vibration system. Structural dynamic methods and technologies have been used with great success by the automotive industry.
Valdinei Sczibor +2 more
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On the frequency mapping of modal parameters identification
Mechanical Systems and Signal Processing, 2007Abstract With borrowing the complex orthogonal polynomial (OP), the numerical condition of the normal matrix of the rational fractional polynomial method is insensitive to frequency scaling. The other two concerns are, the first, transforming coefficients based on OPs into coefficients based on monomials, and the second, computing polynomials.
Kui-Fu Chen, Qun-Ying Jiao, Yan-Hua Shen
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Identification of Modal Parameters of Rotors
1984The occurence of instability in rotating machinery may be caused by different effects: oil film in journal bearings, sealings, internal damping etc.
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Variation in the modal parameters of space structures
33rd Structures, Structural Dynamics and Materials Conference, 1992An analytic and experimental study of gravity and suspension influences on space structural test articles is presented. A modular test article including deployable, erectable, and rotary modules was assembled in three one- and two-dimensional structures.
EDWARD CRAWLEY +3 more
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Autonomous Modal Parameter Estimation: Methodology
2011Traditionally, the estimation of modal parameters from a set of measured data has required significant experience. However, as the technology has matured, increasingly, analysis is being performed by less experienced engineers or technicians. To address this development, frequently software solutions are focusing upon either wizard-based or autonomous ...
A. W. Phillips +2 more
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When CLIP meets cross-modal hashing retrieval: A new strong baseline
Information Fusion, 2023Xiaomin Ying, Guohua Dong, Xinyu Xia
exaly
A review of operational modal analysis techniques for in-service modal identification
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2020Zhi Chao Ong, Shin Yee Khoo
exaly