Random vibration response and reliability analysis of hyperbolic parabolic membrane structures under typhoons

Li, Dong; Zhu, Qiyin; Shen, Renyang; Lu, Leiyu; Lai, Zhichao

doi:10.1016/j.tws.2024.112444

Thin-Walled Structures

2024

DOI: 10.1016/j.tws.2024.112444

|View full text |Cite

Random vibration response and reliability analysis of hyperbolic parabolic membrane structures under typhoons

Dong Li,

Qiyin Zhu,

Renyang Shen

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Flow field characteristics and vibration responses of saddle-shaped membrane structures

Li,

Shen,

Zhu

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

Elastically mounted flexible membrane roofs exposed to flows are prone to vortex-induced vibrations and even aero-instability due to the strong fluid–structure interaction (FSI). This study is to investigate the FSI mechanism in the saddle-shaped membrane structure over a range of Reynolds numbers and wind directions in laminar flows, by bridging structural vibration responses and flow dynamics. The aeroelastic characteristics of membrane structures, including statistics of displacement responses, oscillation frequency, and oscillation damping ratios, were identified from the perspective of time and frequency domains. Simultaneously, the particle image velocimetry system was employed to visualize the flow features, including velocity vector, turbulence intensity, and vortex evolution in both space and time. The flow modes were further decomposed by proper orthogonal decomposition (POD) to capture the salient aspects of the flow. Three patterns of POD modes are identified, and the first mode plays the dominant role in POD modes. It showed that as the wind Reynolds number increases, the space between the shear layer and membrane surface would be narrowed, and resultantly the vortices turn out smaller in scale and closer in space. This trend leads to an increase in the frequency of vortex shedding and a stronger FSI effect. When the frequency of vortex shedding approaches the fundamental frequency of structures, the vibration of the membrane would be shifted from turbulent buffeting to vortex-induced resonance, featured with lock-in frequency, significant amplified displacement, and negative aerodynamic damping ratio.

show abstract

Flow field characteristics and vibration responses of saddle-shaped membrane structures

Li,

Shen,

Zhu

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

show abstract

More accurate representation of interaction at the fluid–structure interface with an improved smoothed field gradient method

Wang,

Liu,

Law

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

Flexible structures are wind-sensitive with a significant fluid–structure interaction (FSI). The FSI analysis, however, often has poor numerical stability and low convergence efficiency due to drastic changes of the physical fields induced by computation errors in local regions of the fluid–structure interface. This paper aims at addressing these problems with the proposal of a new method to smooth the gradient of the pressure field at the fluid–structure interface for an efficient convergence in the FSI analysis. The smoothed gradient theory is modified by introducing weight coefficients. The field of fluid pressure in each smoothing domain with large numerical fluctuations at the interface is then gradient smoothed with the proposed method and the modified field is obtained from the linear Taylor series expansion. The convergence of fluid and structure solvers for the proposed method is ensured within the commercial software FLUENT and ANSYS adopted. The proposed method is validated with experimental results from the literature. It is also numerically validated with a thin plate in viscous flow with different site categories and average wind velocities through comparison of results from conventional methods. The proposed method is found valid and accurate in the FSI analysis. It is relatively independent of a wide range of parameters with satisfactory robustness and notable improvement in the convergence of the FSI analysis.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Random vibration response and reliability analysis of hyperbolic parabolic membrane structures under typhoons

Cited by 2 publications

References 58 publications

Flow field characteristics and vibration responses of saddle-shaped membrane structures

Flow field characteristics and vibration responses of saddle-shaped membrane structures

More accurate representation of interaction at the fluid–structure interface with an improved smoothed field gradient method

Contact Info

Product

Resources

About