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Bibliografias temáticas / Wall impulse response

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Artigos de revistas

Literatura científica selecionada sobre o tema "Wall impulse response"

Autor: Grafiati

Publicado: 9 de novembro de 2024

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Artigos de revistas sobre o assunto "Wall impulse response"

1

Xu, Qian. "Damage Index Analysis of Retaining Wall Structures Based on the Impulse Response Function and Virtual Impulse Response Function." Shock and Vibration 2021 (October 18, 2021): 1–21. http://dx.doi.org/10.1155/2021/9741732.

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To identify the damage within retaining wall structures, the Hilbert–Huang Transforms of the impulse response function and virtual impulse response function were performed. The Hilbert marginal energy ratio spectrums of the impulse response function and virtual impulse response function were acquired. To reflect damage information effectively, those bands with stronger damage sensitivity were extracted via the threshold value ε0. Then, the Hilbert feature bands, which were more sensitive to damage within retaining walls, were selected by considering the contribution of the residual band to the

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2

Vadarevu, Sabarish B., Sean Symon, Simon J. Illingworth, and Ivan Marusic. "Coherent structures in the linearized impulse response of turbulent channel flow." Journal of Fluid Mechanics 863 (January 30, 2019): 1190–203. http://dx.doi.org/10.1017/jfm.2019.15.

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We study the evolution of velocity fluctuations due to an isolated spatio-temporal impulse using the linearized Navier–Stokes equations. The impulse is introduced as an external body force in incompressible channel flow at $Re_{\unicode[STIX]{x1D70F}}=10\,000$. Velocity fluctuations are defined about the turbulent mean velocity profile. A turbulent eddy viscosity is added to the equations to fix the mean velocity as an exact solution, which also serves to model the dissipative effects of the background turbulence on large-scale fluctuations. An impulsive body force produces flow fields that ev

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3

Au, Eu Ving, Gregory MacRae, Didier Pettinga, Bruce Deam, Vinod Sadashiva, and Hossein Soleimankhani. "Seismic response of torsionally irregular single story structures." Bulletin of the New Zealand Society for Earthquake Engineering 52, no. 1 (2019): 44–53. http://dx.doi.org/10.5459/bnzsee.52.1.44-53.

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Impulse ground motions are applied to single story structures with different in-plane wall strength and stiffness, rotational inertia, and out-of-plane wall stiffness to obtain the dynamic response considering torsion. A simple hand method to evaluate the impulse response is developed. It is shown that the median increase in response of the critical component considering torsion from many earthquake records is similar to that from impulse records. Using this information, a simple design methodology is proposed which enables the likely earthquake response of critical elements considering torsio

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4

Wei, Xue Ying, Tuo Huang, and Nan Li. "Numerical Derivation of Pressure-Impulse Diagrams for Unreinforced Brick Masonry Walls." Advanced Materials Research 368-373 (October 2011): 1435–39. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.1435.

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Pressure-impulse diagrams have been extensively used for damage assessments of structural components subject to a specified blast loading. In this paper, a numerical method is used to generate pressure-impulse diagrams for unreinforced masonry walls subjected to blast loading. A previously developed plastic damage material model accounting for strain rate effects is used for brick and mortar. Three levels of damage criteria are defined based on maximum deflection of the wall and rotation of the supports. The obtained blast response for unreinforced masonry walls are validated against field tes

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5

Jia, Zhenzhen, Qing Ye, and He Li. "Damage Assessment of Roadway Wall Caused by Dynamic and Static Load Action of Gas Explosion." Processes 11, no. 2 (2023): 580. http://dx.doi.org/10.3390/pr11020580.

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In order to obtain the damage characteristics of a roadway wall caused by a gas explosion, the damage evaluation theory of a roadway wall under the dynamic and static loads of a gas explosion is analyzed in this paper. Meanwhile, an evaluation method (overpressure–impulse criterion) is selected to evaluate the damage of the roadway wall under the impact load of the gas explosion. A mathematical model and a physical analysis model of the roadway wall damage are established by LS-DYNA software. The dynamic response of the roadway wall caused by the dynamic and static loads of the gas explosion i

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6

Xu, Qian. "Damage Identification Investigation of Retaining Wall Structures Based on a Virtual Impulse Response Function." Shock and Vibration 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/1346939.

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To eliminate the influence of excitation on the wavelet packet frequency band energy spectrum (ES), ES is acquired via wavelet packet decomposition of a virtual impulse response function. Based on ES, a character frequency band vector spectrum and damage eigenvector spectrum (DES) are created. Additionally, two damage identification indexes, the energy ratio standard deviation and energy ratio variation coefficient, are proposed. Based on the damage index, an updated damage identification method for retaining wall structures is advanced. The damage state of a retaining wall can be diagnosed th

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7

Wu, Di, Fangshuo Mo, and Jianmin Ge. "Effects of coupling between loudspeaker and wall on impulse response measurement." Journal of the Acoustical Society of America 131, no. 4 (2012): 3284. http://dx.doi.org/10.1121/1.4708279.

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8

Li, Wen Sheng, Hui Yang, and Bo Zhang. "Dynamic Analysis on Explosion Resistance Performance of Reinforced Concrete Wall." Advanced Materials Research 1078 (December 2014): 162–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1078.162.

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Based on the finite element software ABAQUS, this paper deals with numerical simulation to dynamic response of reinforced concrete wall under blast loading. Study shows that the explosion resistance performance of the wall with four edges fixed or with two opposite edges fixed are better than that of the wall one edge fixed and another opposite edge simply supported. The greater the explosion impulse, the bigger the maximum displacement of the wall. When reinforcement ratio of the wall increases, the explosion resistance performance of the wall will be improved. At the same time, reasonable re

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9

Gaiser, James E., Terrance J. Fulp, Steve G. Petermann, and Gary M. Karner. "Vertical seismic profile sonde coupling." GEOPHYSICS 53, no. 2 (1988): 206–14. http://dx.doi.org/10.1190/1.1442456.

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P-wave and S-wave displacements occur at high angles of incidence in vertical seismic profiles (VSPs). Therefore, the coupling of a geophone sonde to the borehole wall must be rigid in all directions. A sonde that is well coupled should have no resonant frequency within the seismic band and should provide geophone outputs that accurately represent the earth’s ground motion. An in‐situ coupling response experiment conducted under normal VSP field conditions provides a measure of the sonde‐to‐borehole wall coupling. The sonde is locked in the borehole and a surface source is excited at different

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10

Pastor, J., B. Soria, and C. Belmonte. "Properties of the nociceptive neurons of the leech segmental ganglion." Journal of Neurophysiology 75, no. 6 (1996): 2268–79. http://dx.doi.org/10.1152/jn.1996.75.6.2268.

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1. The electrical responses of nociceptive (N) lateral and N medial neurons of the leech segmental ganglion to mechanical, chemical, and thermal stimulation of the skin were studied in a superfused ganglion-body wall preparation. 2. Mechanical indentation of the skin > 10 mN evoked in both types of cells a sustained discharge of impulses; afterdischarge was often observed with suprathreshold stimulations. 3. Application to the cutaneous receptive area of 10-100 mM acetic acid or of NaCI crystals and solutions also elicited a firing response in N medial and N lateral cells. In contrast, caps

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