Wind loads on lightweight structures: Numerical simulation and wind tunnel tests

Rank, Ernst; Halfmann, A.; Scholz, Dominik; Glück, Markus; Breuer, M.; Durst, F.; Kaiser, U.; Bergmann, Dominique Paul; Wagner, Siegfried

doi:10.1002/gamm.201490014

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…The proposed structural module has been modelled using a finite element calculation program, SOFISTIK 2014, program used in previous researches on the structural behaviour of membrane structures and lightweight structures (Gosling et al 2013;Rank et al 2005). The finite element method (FEM) used, in the ASE analysis module of the program, is a displacement method, i.e.…”

Section: Calculation Methodsmentioning

confidence: 99%

Innovative Tensile Structures for Protected Crop Facilities

Fuina

Scarascia-Mugnozza

Castellano

2020

Lecture Notes in Civil Engineering

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Greenhouse structures are complex buildings that must meet different needs, such as the microclimate control inside the greenhouse, the strength of structural elements, as well as the radiometric and mechanical features of roofing materials. The covering system must allow the transmission of solar radiation for crop needs and guarantee resistance performances in relation to external actions, such as wind and snow loads. Starting from the main characteristics of agricultural commercial greenhouses and tensile structures, the proposal concerns with an innovative tensile supporting structure designed for the covering of protected crop facilities. The innovative tensile structural configuration was first studied by means of the selection of the construction materials and the cross sections of the structural components and afterward calculated using the structural analysis software SOFISTIK. The load analysis on the structure was carried out in accordance with the European standards UNI-EN 13031-1: 2004 and the Italian Technical Construction Code of 2018 related to the Eurocodes. The main results concern the comparison with the current structural types of commercial greenhouses: analysis of the steel weight of the structure and improvement of the structural response to external actions of the innovative tensile structure.

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Section: Calculation Methodsmentioning

confidence: 99%

Innovative Tensile Structures for Protected Crop Facilities

Fuina

Scarascia-Mugnozza

Castellano

2020

Lecture Notes in Civil Engineering

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“…Some pressure distributions are shown for hypars [14] [20] and umbrella-like cones [21] [22]. However, most of the numerical studies focus rather on the dynamics of these structures including fluid structure interaction coupling frameworks [22]- [26] and vibrations analyses [27]. The majority of the abovementioned numerical studies, except for [14] and [23], include some experimental validation for the wind load determinations.…”

Section: Wind Loads On Double Curved Structuresmentioning

confidence: 99%

Prototyping of thin shell wind tunnel models to facilitate experimental wind load analysis on curved canopy structures

Colliers

Mollaert

Degroote

et al. 2019

Journal of Wind Engineering and Industrial Aerodynamics

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The topologies of membrane and shell structures are not covered by existing wind load Standards and wind tunnel testing should be used to obtain representative wind loads for these structures. However, accurate scale-models of these organically shaped and often open thin structures are complex, time-consuming and expensive to build. To stimulate experimental research on wind load distributions over these structures, this paper illustrates a prototyping methodology for double curved thin shell wind tunnel models with integrated pressure sensors. The production process is illustrated for a hyperbolic paraboloid roof structure. The obtained wind load distributions are validated with literature for a flat roof and canopy that is made according to the same methodology and for two hyperbolic paraboloid roofs. Results indicate that, compared to conventional wind tunnel models, these thin shell wind tunnel models yield more realistic wind pressure distributions over very thin canopy structures. Finally, Cp-distributions are shown for the hyperbolic paraboloid canopy with the high corner under attack. The production of glass-fibre reinforced composites in a CNC-milled mould is convenient and accurate and facilitates the production of wind tunnel models to be used for wind load measurements on organically shaped thin canopy structures.

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“…In structural engineering, the typical approach to reducing the problem of the membrane structure being subjected to wind includes the risk of neglecting main effects, which result from the strong coupling of the wind and structural interaction [198][199].…”

Section: Fluid-membrane Structure Interactionmentioning

confidence: 99%

Numerical Simulation of Selected Two-Dimensional and Three-Dimensional Fluid-Structure Interaction Problems Using OpenFOAM Technology

Al-Manthari¹

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Fluid-structure interaction (FSI) problems are increasing in various engineering fields. In this thesis, different cases of FSI in two-and three-dimensions (2D and 3D) are simulated using OpenFOAM and foam-extend. These packages have been used to create a coupling between fluid and solid.The vortex-induced vibration (VIV) phenomenon of flow past a circular cylinder is studied using PIMPLE algorithm for pressure-velocity coupling. This VIV study is restricted to incompressible flow simulation at a Reynolds number (Re) of 100. The changes of drag and lift coefficient values depend on the study case and the spring-massdamper system for the flow past a free oscillatory cylinder. The free vibrating cylinder examined in one-degree-of-freedom (1DOF) and two-degrees-of-freedom (2DOF) systems with linear damping and spring properties. Both will affect the behaviour of the cylinder within the flow with some noticeable differences. The response time of the cylinder and the drag coefficient are the most affected by the spring and damper.

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Wind loads on lightweight structures: Numerical simulation and wind tunnel tests

Cited by 6 publications

References 7 publications

Innovative Tensile Structures for Protected Crop Facilities

Innovative Tensile Structures for Protected Crop Facilities

Prototyping of thin shell wind tunnel models to facilitate experimental wind load analysis on curved canopy structures

Numerical Simulation of Selected Two-Dimensional and Three-Dimensional Fluid-Structure Interaction Problems Using OpenFOAM Technology

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