Including directly measured rotations in the virtual point transformation

Bregar, Tomaž; Holeček, Nikola; Čepon, Gregor; Rixen, Daniel J.; Boltežar, Miha

doi:10.1016/j.ymssp.2019.106440

Cited by 14 publications

(4 citation statements)

References 14 publications

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“…Normally, several translational accelerometers can be placed close to each other to approximate the rotational vibration. Moreover, the use of rotational accelerometers to measure the rotations directly has recently attracted attention in structural dynamics [89]- [91]. However, these sensors are usually heavy and may only be suitable for bulky structures [92], [93].…”

Section: Methods Based On Dynamic Substructuring Frameworkmentioning

confidence: 99%

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Sun,

Thompson

2023

Journal of Vibration and Acoustics

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Resilient elements are widely applied for vibration and noise control in many areas of engineering. Their complex dynamic stiffness gives fundamental information to describe their dynamic performance and is required for predicting structure-borne sound and vibration using dynamic modelling. Many laboratory measurement methods have been developed to determine the dynamic properties of resilient elements. This paper presents a review of recent developments of the measurement methods from the perspective of force-displacement relations of the resilient element assembly rather than of their material properties. To provide context, the review begins with an introduction to modelling methods for resilient elements, especially for rubber and rubber-like isolators, and three standardized measurement methods are introduced. Recent developments are then discussed including methods to extend the frequency range, which are mainly developments of the indirect method. Mobility methods, modal-based methods, recent active frequency-based substructuring (FBS) and inverse substructuring (IS) methods to study the dynamic properties of resilient elements are also described. Laboratory test rigs and the corresponding identification methods are outlined. Methods to evaluate nonlinear dynamic properties of resilient elements by laboratory measurements are also discussed. Finally, the review is concluded by discussing advantages and limitations of the existing methods and giving suggestions for future research.

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Section: Methods Based On Dynamic Substructuring Frameworkmentioning

confidence: 99%

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Sun,

Thompson

2023

Journal of Vibration and Acoustics

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“…After applying the transformation, a collocated set of FRFs is obtained, which can afterwards directly be used in DS. Expanded VPT is also supported, where directly measured rotational response is included in the transformation (Bregar et al, 2020).…”

Section: Virtual Point Transformation (Vpt)mentioning

confidence: 99%

pyFBS: A Python package for Frequency Based Substructuring

Bregar¹,

Mahmoudi²,

Kodrič³

et al. 2022

JOSS

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“…However, the interface dynamics are not accurately described if only translational DoF are considered. There have been numerous studies to approximate rotations [6,13,33,34] as well as measure them directly [35][36][37]. Based on Equivalent Multi Point Connection (EMPC) [34], a Virtual Point (VP) type interface [38,39] can be defined to represent the interface motion by virtual translations and rotations q A and virtual forces and moments m A (Fig.…”

Section: Interface Definitionmentioning

confidence: 99%

Joint Identification through Hybrid Models Improved by Correlations

Saeed,

Firrone,

Berruti

2021

Preprint

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Including directly measured rotations in the virtual point transformation

Cited by 14 publications

References 14 publications

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

Measurement, Modeling, and Analysis of the Dynamic Properties of Resilient Elements Used for Vibration Isolation

pyFBS: A Python package for Frequency Based Substructuring

Joint Identification through Hybrid Models Improved by Correlations

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