Hailstone-induced dynamic responses of pretensioned umbrella membrane structure

Liu, Changjiang; Wang, Fan; Deng, Xiaowei; Pang, Song; Liu, Jian; Wu, Yuyou; Xu, Zhong

doi:10.1177/1369433220940149

Cited by 35 publications

(8 citation statements)

References 39 publications

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“…Nowadays, the increase in the earth’s mean temperature due to human activities is a relatively new phenomenon that has resulted in public concern. 1–10,11−17 Petrochemicals and industries are considered the main blind spots in the global energy dispute, given the effect that the sector will apply on future energy trends. 18–25,26−30 To reduce environmental pollutants from combustion, several methods have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Sun

Duan

Hao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nitrogen oxides are considered as one of the greenhouse gases. Among the most significant emission sources for this gas is a natural gas-fired power plant. The United Nations General assembly suggested in 1988 that human activities can negatively impact weather patterns, and thus they should be controlled. This control policy can improve the efficiency of final consumers such as power plants, cars, or other energy-intensive industries. In this paper, the existing strategies and explicitly making the dry low nitrogen oxides burner reduce greenhouse gases in power plants are explored. The geometry of the burner has been produced in a three-dimensional form in GAMBIT software, and the results of the simulation have been expressed through FLUENT software. Contours of pressure, temperature, and velocity of the fluid in the furnace are also derived. It is concluded that the dry low nitrogen oxides burners plan has a better result compared with other strategies.

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Section: Introductionmentioning

confidence: 99%

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Sun

Duan

Hao

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Similarly, a low tear strength in the membrane leaves the structure susceptible to scratches and punctures by impact objects [76]. Therefore, impact load is an essential factor that has to be considered in the design of membrane structures, but it is not included in the calculation of the load-effect combination in existing design codes and standards of membrane structures [77].…”

Section: Impact Loadmentioning

confidence: 99%

Performance and Measurement Devices for Membrane Buildings in Civil Engineering: A Review

Huang

Xue

et al. 2022

Applied Sciences

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Lightweight and flexible membranes offer different façades for buildings (suitability, competitive costs, durability, and other benefits) compared to traditional building materials. Increasing attention is being paid to membrane structures in the civil and industrial sectors. Acquiring response data or environmental characteristics directly from a model or building is the most straightforward approach to analyzing the properties of membrane structures, which also contributes to the development of theoretical studies and simulation methods along with the enactment of specifications. This paper provides a comprehensive overview of membrane structure performance, including mechanical, thermal, and energetic aspects, alongside the deployment and deflation of inflatable types. Furthermore, the devices used to monitor the structural response are summarized. The constitution of the structure is the most critical factor affecting its performance. A proper design would offer enhanced mechanical properties and thermal environments with a reduction in energy consumption. Non-contact measurement technology has the advantage of causing no structural disturbance and is low cost, but it lacks practical application in membrane buildings. The achievements and limitations of previous studies are also discussed. Finally, some potential directions for future work are suggested.

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“…Today, the use of additive manufacturing technology has increased due to its exibility, and design advantages [9][10][11][12][13]. For example, this technology allows the creation of complex shapes and structures with less weight, reduces development time and tool costs, and dramatically simpli es the production process [14][15][16][17][18]. Also, using this method, parts that are made of several assembly parts are made as a single object without assembly.…”

Section: Introductionmentioning

confidence: 99%

Effect of different parameters on the tensile properties of printed Polylactic acid samples by FDM: experimental design tested with MDs simulation

Farazin

Mohammadimehr

2021

Int J Adv Manuf Technol

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Fused Depositional Modeling (FDM) is one of the common methods for 3D printing of polymers, which is expanding in various industrial applications, scienti c researches, and engineering applications due to its ability to make complex parts. In this research, molecular dynamics (MDs) simulation has been used to predict the physical and mechanical properties. Then, the mechanical properties of the printed parts are obtained. The mechanical properties of 3D printed parts strongly depend on the correct selection of processing parameters. In this study, the effect of three important parameters such as in ll density, printing speed, and layer thickness are investigated on the tensile properties of PLA specimens. For this purpose, standard specimens with four in ll densities of 20%, 40%, 60% and 80%, two speeds of 20 mm/s, and 40 mm/s, and two thicknesses of 0.1 mm and 0.2 mm are printed and tested under quasistatic tensile test. In all printed specimens, the print angle is ± 45°. The experimental results show that the in ll density in comparison to the other two parameters has signi cant effect on mechanical properties such as modulus of elasticity, ultimate strength, and failure strain. According to these results, by increasing the in ll density, the stiffness and strength of the specimens increases considerably. At in ll density of 80%, the specimens has the highest stiffness and strength, but it exhibits a brittle behavior. Moreover, it can be deduced that by reducing the layer thickness although the modulus of elasticity increases a little, ductility is greatly affected.

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Hailstone-induced dynamic responses of pretensioned umbrella membrane structure

Cited by 35 publications

References 39 publications

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Modeling of a dry low nitrogen oxides burner using a three-dimensional computational fluid dynamics simulation

Performance and Measurement Devices for Membrane Buildings in Civil Engineering: A Review

Effect of different parameters on the tensile properties of printed Polylactic acid samples by FDM: experimental design tested with MDs simulation

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