Scattering of P-wave and transient response around a fluid-filled cavity in an elastic medium

Tao, M; Xiang, GL; Zhao, R; Wu, CQ

Scattering of P-wave and transient response around a fluid-filled cavity in an elastic medium

Tao, M Xiang, GL Zhao, R Wu, CQ

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Publisher:: Springer Nature
Publication Type:: Journal Article
Citation:: Journal of Central South University, 2023, 30, (2), pp. 568-583
Issue Date:: 2023-02-01

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Field	Value	Language
dc.contributor.author	Tao, M
dc.contributor.author	Xiang, GL
dc.contributor.author	Zhao, R
dc.contributor.author	Wu, CQ
dc.date.accessioned	2024-04-08T08:22:09Z
dc.date.available	2024-04-08T08:22:09Z
dc.date.issued	2023-02-01
dc.identifier.citation	Journal of Central South University, 2023, 30, (2), pp. 568-583
dc.identifier.issn	2095-2899
dc.identifier.issn	2227-5223
dc.identifier.uri	http://hdl.handle.net/10453/177566
dc.description.abstract	The dynamic stress concentration ascribed to the scattering of dynamic disturbances encountered by different structures is an important factor affecting the damage of deep subsurface structures. To study the dynamic response around the underground fluid-filled cavity, a simplified model of the plane P-waves incident in the fluid-filled circular cavity with rock mass structure was established. Series solutions of dynamic stress concentration around the fluid-filled cavity were achieved based on the wave function expansion methods and stress boundary conditions. Using Fourier integral transformation, the expression of dynamic stress concentration factors (DSCFs) around the fluid-filled cavity subjected to transient impact was derived. Then, the relationship between DSCFs and their waveform parameters under steady-state and transient incident waves was quantitatively analyzed. In addition, a numerical model was established using the finite element numerical simulation software LS-DYNA and dynamic stress concentration and failure characteristics around the fluid-filled cavity under transient impact load were simulated. The direction of incident, Poisson ratio, time, and wavenumbers have different effects on the distribution of dynamic stress concentration around the fluid-filled circular cavity.
dc.language	en
dc.publisher	Springer Nature
dc.relation.ispartof	Journal of Central South University
dc.relation.isbasedon	10.1007/s11771-023-5255-2
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Scattering of P-wave and transient response around a fluid-filled cavity in an elastic medium
dc.type	Journal Article
utslib.citation.volume	30
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
dc.date.updated	2024-04-08T08:22:08Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	30
utslib.citation.issue	2

Abstract:

The dynamic stress concentration ascribed to the scattering of dynamic disturbances encountered by different structures is an important factor affecting the damage of deep subsurface structures. To study the dynamic response around the underground fluid-filled cavity, a simplified model of the plane P-waves incident in the fluid-filled circular cavity with rock mass structure was established. Series solutions of dynamic stress concentration around the fluid-filled cavity were achieved based on the wave function expansion methods and stress boundary conditions. Using Fourier integral transformation, the expression of dynamic stress concentration factors (DSCFs) around the fluid-filled cavity subjected to transient impact was derived. Then, the relationship between DSCFs and their waveform parameters under steady-state and transient incident waves was quantitatively analyzed. In addition, a numerical model was established using the finite element numerical simulation software LS-DYNA and dynamic stress concentration and failure characteristics around the fluid-filled cavity under transient impact load were simulated. The direction of incident, Poisson ratio, time, and wavenumbers have different effects on the distribution of dynamic stress concentration around the fluid-filled circular cavity.

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http://hdl.handle.net/10453/177566