کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6757621 | 511094 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Research on the added mass of open-type one-way tensioned membrane structure in uniform flow
ترجمه فارسی عنوان
تحقیق در مورد جرم افزایشی ساختار غشایی کششی یکطرفه در یک طرفه در جریان یکنواخت
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کلمات کلیدی
توده اضافه شده، سازه های غشایی، بیان تحلیلی، جریان یکنواخت،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The wind pressure on the vibrating membrane can be simplified to be the sum of the aerodynamic acoustic pressure and the quasi-static wind pressure. These pressures are caused by the compressive action of the vibrating membrane on the air and the quasi-static wind pressure on the corresponding membrane at any instant. An analytical expression for the added mass of open-type one-way tensioned membrane vibrating in uniform flow is derived and verified using data from a series of aeroelastic wind tunnel tests. The results show that the added mass caused by the aerodynamic acoustic pressure is equal to 2Ïairl/nÏ, where Ïair is the density of air; l is the span of the membrane and n is the mode order. The added mass caused by the quasi-static wind pressure is equal to ÏairU02an/2y0Ïs,n2, where U0 is the on-coming flow velocity; y0 is the displacement amplitude; an is the shape-change coefficient and Ïs,n is the circular natural frequency of the nth mode. In this study, the difference between analytical and test results is small and within ±9.0%; the added mass caused by the quasi-static wind pressure increases with the on-coming flow velocity and is 2-5 times the component caused by aerodynamic acoustic pressure; and the added mass of the first mode is 3.5-6.9 times the structural mass.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 137, February 2015, Pages 69-77
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 137, February 2015, Pages 69-77
نویسندگان
Zhaoqing Chen, Yue Wu, Xiaoying Sun,