Computation of wind–structure interaction on tension structures

Wu, Yue; Sun, Xiaofeng; Shen, Shihui

doi:10.1016/j.jweia.2008.02.043

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…The dynamic nature of wind makes it a formidable force that structures must contend with [149,150]. Variations in wind speed, direction, and turbulence levels can exert substantial forces on flexible structures [151]. Predicting and mitigating these effects is essential for ensuring structural integrity and safety.…”

Section: Bridging the Gap In Wind-structure Interaction Researchmentioning

confidence: 99%

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Aly

2023

Applied Sciences

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Experimental wind engineering is crucial for global structural design. This paper addresses limitations in aerodynamic testing, particularly in wall-bounded and small-scale scenarios. Open-jet testing, introduced as an advanced tool, overcomes turbulence modelling constraints, providing a more accurate representation of real-world conditions. The LSU WISE open-jet facility produces complete turbulence at a large scale, eliminating the need for corrections accompanied by partial turbulence simulation. This discovery holds significant implications in wind engineering and unsteady aerodynamics. Integrating photovoltaic panels with gable-roofed buildings may not require additional structural reinforcement, with a reduction in wind uplift forces by 45–63%. Building-integrated photovoltaics (BIPV) offer design flexibility and aesthetic appeal despite potential higher upfront costs. Strategic interventions, such as design optimization and cost-effective installation methods, can enhance the economic viability of BIPV systems. Contrary to long-held beliefs, the findings challenge the notion that wind loads on structures with sharp corners are insensitive to Reynolds number. Open-jet testing produces higher peak pressures, providing real-world justification for actual damage in high-rise buildings. These results validate the author’s hypothesis regarding the underestimation of peak loads (in small-scale testing) leading to cladding failure in high-rise buildings. They emphasize the superiority of large-scale open-jet testing, underscoring its critical role in designing resilient structures. The LSU WISE open-jet facility’s unique capabilities hold immense promise for revolutionizing wind engineering, addressing grand challenges, and creating more resilient and sustainable infrastructure. Its applications span critical infrastructure, promising significant economic, societal, and educational impacts in STEM fields.

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Section: Bridging the Gap In Wind-structure Interaction Researchmentioning

confidence: 99%

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Aly

2023

Applied Sciences

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“…erefore, it is widely used in large-scale stadiums, exhibition venues, and other public buildings. Because of the small mass and flexibility, it is easy for vibration under external disturbance, and the stiffness of the membrane material is small, which results in the large vibration deformation of the membrane structure under wind load, showing strong geometric nonlinearity [3,4]. Many research results show that the single-mode aeroelastic instability can easily occur in membrane structures when the pretension of membrane materials is small [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Geometric Nonlinearity on Membrane Roof Stability in Air Flow

Song

Wang

et al. 2020

Shock and Vibration

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Membrane materials are widely used in construction engineering with small mass and high flexibility, which presents strong geometric nonlinearity in vibration. In this paper, an improved multiscale perturbation method is used to solve the aerostatics stability of membrane roofs on closed and open structures by quantifying the effect of geometric nonlinearity on the single-mode aeroelastic instability wind velocity. Results show that the critical wind velocities of two models are smaller when the geometrical nonlinearity of the membrane material is neglected. In addition, under normal wind load, the influence of geometrical nonlinearity of the membrane on the aerodynamic stability of the roof can be neglected. However, under strong wind load, when the roof deformation reaches 3% of the span, the influence of geometric nonlinearity should be considered and the influence increases with the decrease of transverse and downwind span of the membrane roof. The results obtained in this paper have an important theoretical reference value for the design membrane structures.

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“…Miyake et al (1992) found that the vortices generated on stationary suspended roofs played an important role in the excitation of the roofs. Wu et al (2008) studied the wind-structure interaction mechanism of a closed-type 2D membrane using a computational fluid dynamics (CFD) simulation method and found that the vibration of the roof was induced by vortex shedding from the membrane's leading edge. Similar phenomena were found by Rojratsirikul et al (2010) in their study of 2D air foils using a particle image velocimetry (PIV) system and smoke visualization in aero-elastic model wind tunnel tests.…”

Section: Introductionmentioning

confidence: 99%

Research on the wind-induced aero-elastic response of closed-type saddle-shaped tensioned membrane models

Chen²,

Sun

2015

J. Zhejiang Univ. Sci. A

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Abstract:The aero-elastic instability mechanism of a tensioned membrane structure is studied in this paper. The response and wind velocities above two closed-type saddle-shaped tensioned membrane structures, with the same shape but different pretension levels, were measured in uniform flow and analyzed. The results indicate that, for most wind directions, several vibration modes are excited and the amplitude and damping ratio of the roof slowly increase with the on-coming flow velocity. However, for particular wind directions, only one vibration mode is excited, and the amplitude and damping ratio of the vibration mode increase slowly with the on-coming flow velocity. The aero-elastic instability is caused by vortex-induced resonance. On exceeding a certain wind speed, the amplitude of the roof vibration increases sharply and the damping ratio of the vibration mode decreases quickly to near zero; the frequency of the vortex above the roof is locked in by the vibration within a certain wind velocity range; the amplitudes of the roof in these wind directions reach 2-4 times the amplitudes for other wind directions. The reduced critical wind speeds for the aero-elastic instability of saddle-shaped membrane structures at the first two modes are around 0.8-1.0.

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Computation of wind–structure interaction on tension structures

Cited by 15 publications

References 11 publications

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Effect of Geometric Nonlinearity on Membrane Roof Stability in Air Flow

Research on the wind-induced aero-elastic response of closed-type saddle-shaped tensioned membrane models

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