Gust Effect Factor for Wind Load Estimation of Tree Supporting Systems
نویسندگان
چکیده
منابع مشابه
Gust-front factor: A new framework for the analysis of wind load effects in gust-fronts
In comparison with atmospheric boundary-layer winds, which are customarily treated as stationary, gust-front winds such as a thunderstorm/downburst exhibit strong nonstationarity. In storms characterized by a gust-front, wind speed changes rapidly during a short time period. In order to realistically describe attendant loads effects, a new analysis framework is presented which is named the gust...
متن کاملchannel estimation for mimo-ofdm systems
تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...
Robust Control Synthesis for Gust Load Alleviation of Large Aeroelastic Wind Turbine Models
This paper introduces a methodology for the design of gust load control systems directly from large aeroelastic models. Firstly, a state-space representation of the vortex particle unsteady aerodynamics suitable for control synthesis is implemented. Secondly, through the use of robust controllers, large reductions in loadings are demonstrated. Thirdly, controllers synthesized from models of coa...
متن کاملAeroservoelastic Modelling and Active Control of Very Large Wind Turbine Blades for Gust Load Alleviation
The increased flexibility of wind turbine blades necessitates not only accurate predictions of the aeroelastic effects, but also requires active control techniques to overcome potentially damaging loadings and oscillations. An aeroservoelastic model, capturing the structural response and the unsteady aerodynamics of very large rotors, will be used to demonstrate the potential of closed-loop loa...
متن کاملOn the formulation of ASCE7-95 gust effect factor
Highlights of the formulation of the gust effect factor in recent revisions of the wind load provisions in ASCE7-95 are presented. The revised wind map is based on 50-year peak gust speeds in contrast with fastest mile speeds used in ANSI/ASCE7-93. The concepts of spatial and temporal averages are discussed, and the new gust effect factor (GEF) is introduced with its derivation detailed. Exampl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Asian Architecture and Building Engineering
سال: 2017
ISSN: 1346-7581,1347-2852
DOI: 10.3130/jaabe.16.605