Mode shape transformation for model error localization with modal strain energy

Huang, Zi; Zang, Chaoping; Zhang, Genbei; Friswell, Michael I.

doi:10.1016/j.jsv.2020.115230

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…Similarly, Zhao et al [12] drew the stress-time curve of the foundation pile, and studied the dynamic response properties of pier under impact load by extracting the curve properties. In terms of local dynamic properties, the modal strain energy method is also recognized as a method that can determine damage [13][14][15]. Hadjian et al [16] proposed a damage identification method based on modal kinetic energy change rate as a parameter, which can simultaneously locate and quantify damage.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Damage Identification of High-Pile Wharf Framed Bents under Horizontal Impact Loads

Zheng,

Xiao,

Zhang

et al. 2024

Sensors

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This study investigates damage characteristics, dynamic structural performance changes, and quantitative damage assessment of high-pile wharf framed bents exposed to horizontal impact loads. Through extensive testing of wharf framed bents under such loads, a damage identification approach based on stiffness, natural vibration period, and acceleration data derived from experiments is presented. The findings reveal that under horizontal impact loads, framed bents initially exhibit tensile damage and leaning piles, followed by short straight piles. Additionally, structural damage results in a reduced self-oscillation frequency and an increased amplitude decay rate. Both stiffness-based and cycle-based damage indicators effectively track the cumulative damage progression of the structure. However, the cycle-based damage indicators demonstrate superior stability and accuracy, while acceleration-based indicators precisely identify the moment of damage mutation. This research contributes to enhancing local components, implementing damage identification methods, and advancing health monitoring practices in high-pile wharf projects, aligning with the standards of scientific publications in the field.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Damage Identification of High-Pile Wharf Framed Bents under Horizontal Impact Loads

Zheng,

Xiao,

Zhang

et al. 2024

Sensors

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“…For solving the vibro-acoustic problems more conveniently, the Modal Energy Analysis (MODENA) works in numerical calculation. 45–46 Kang et al 47 evaluated the reliability of the methods to measurement noises, damping ratio of sound excitations, and harmonic excitations in simulation calculation and real field test. The modal superposition method is also applied to analyze the tire components in order to reduce the tire interior noise.…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling of the virtual sound insulation measurement suite and research on sound insulation test methods

Wang

Sheng

Kong

et al. 2022

Journal of Low Frequency Noise, Vibration and Active Control

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With the development of modern industrial technology, it is an essential problem to calculate the noise reduction performance of the flexible partition walls. The sound insulation measurement model is modeled by the Spectral geometry method (SGM). Compared with the traditional ones, it is a method with higher calculation accuracy and faster convergence speed. The displacement of the panel and the sound pressure field inside the rooms are expressed as Fourier series with additional items. In order to simulate the real measurement environment, the sound source room and the receiving room are set as a reverberation chamber and an anechoic chamber with impedance boundaries, respectively. The coupling relationship is established by the Hamilton’s principle. Then the natural frequencies and the sound pressure level are compared with those derived by the finite element method (FEM). The results show that the analytical method has good accuracy and convergence. Moreover, the sound transmission loss (STL) of the partition could be obtained by the sound pressure method. Considering there is no accurate method for measuring the STL, this paper studies some factors affecting the sound insulation performance of the model by the parametric analysis method, such as the thickness of the panel, the length of the receiving room, the impedance of the receiving room and the parameters of medium.

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Modal characteristics of rollers immersed in different fluids: experimental and numerical analysis

Wu,

Wang,

et al. 2024

Int J Mech Mater Des

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Mode shape transformation for model error localization with modal strain energy

Cited by 7 publications

References 19 publications

Experimental Investigation and Damage Identification of High-Pile Wharf Framed Bents under Horizontal Impact Loads

Experimental Investigation and Damage Identification of High-Pile Wharf Framed Bents under Horizontal Impact Loads

Analytical modeling of the virtual sound insulation measurement suite and research on sound insulation test methods

Modal characteristics of rollers immersed in different fluids: experimental and numerical analysis

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