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Evolutionary Spectral Analyses of a Powerful Typhoon at the Sutong Bridge Site Based on the HHT

Lin Ma, Da-jun Zhou, Ai-min Yuan, Hao Wang
2016 Mathematical Problems in Engineering  
The degrees of nonstationarity of different-order IMF components are analysed and a synthesized method of analysing the evolutionary spectrum and time-averaged power spectrum of a strong typhoon is proposed  ...  Discrete expressions are determined for the evolutionary spectral analysis based on the HHT.  ...  Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this paper.  ... 
doi:10.1155/2016/4143715 fatcat:azc3t63r5fgalmcd673tdg22ja

Investigation of Influence Factors of Wind-Induced Buffeting Response of a Six-Tower Cable-Stayed Bridge

Zhi-Qiang Zhang, You-Liang Ding, Fang-Fang Geng
2016 Shock and Vibration  
This paper presents an investigation of the wind-induced buffeting responses of the Jiashao Bridge, the longest multispan cable-stayed bridge in the world.  ...  A time-domain procedure for analyzing buffeting responses of the bridge is implemented in ANSYS with the aeroelastic effect included.  ...  Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this paper. Acknowledgments  ... 
doi:10.1155/2016/6274985 fatcat:ah3ggnmxmfhgvebsyw6kne4uoi

Page 801 of Journal of Political Economy Vol. 35, Issue 6 [page]

1927 Journal of Political Economy  
One might develop to much greater length the diversities of opinion that exist in tangled confusion in the minds of contem- porary economists, running from the scope of the subject and the scientific method  ...  One suspects that the advocacy of the evolutionary, or genetic, or institutional approach to economic theory as the sole defen- sible approach conceals 2 dogmatism and a naive faith as funda- mental as  ... 

Pseudo Excitation Method and Some Recent Developments

J.H. Lin, Y.H. Zhang, Y. Zhao
2011 Procedia Engineering  
Some well-concerned problems such as the seismic analysis of long-span bridges subjected to differential ground excitations, wind-induced flutter-buffet analysis of slender structures based on 3D finite  ...  Pseudo Excitation Method (PEM) as a highly efficient and accurate algorithm series of stationary and nonstationary random vibration of structures has been widely used in China.  ...  Over the past 20 years, a very efficient method, known as the pseudo-excitation method (PEM), to cope with the above computational difficulty have been developed.  ... 
doi:10.1016/j.proeng.2011.07.308 fatcat:w35235pi2jd3nlxqlyjymnebia

Aerodynamic admittance influence on buffeting performance of suspension bridge with streamlined deck

Yang Yang, Yao Gang, Wu Bo, Liu Lianjie, Zhang Liangliang
2019 Journal of Vibroengineering  
However, the influence of aerodynamic admittance on buffeting performance is affected by the wind speed significantly.  ...  Under given conditions, adopting the Sears function as the admittance function of a similar streamlined box girder is reasonable, while the buffeting performance result obtained by adopting an admittance  ...  Acknowledgements This study is financially supported by the National Natural Science Foundation of China  ... 
doi:10.21595/jve.2018.19681 fatcat:rn3yt4mmtrgxlohrduw6esfhda

Buffeting performance of long-span suspension bridge based on measured wind data in a mountainous region

Yao Gang, Yang Yang, Fujia Wei, Weihe Qin
2018 Journal of Vibroengineering  
Improved analysis theories were applied in the buffeting performance including linear and non-linear regression analysis, evolutionary power spectral density, varying frequency-increment sweeping method  ...  The buffeting suppression method includes active and passive buffeting control [6] [7] [8] .  ...  Acknowledgements This study is financially supported by the National Natural Science Foundation of China (51578098 and 51608074), Fundamental Research Funds for the Central University (106112017CDJXY200009  ... 
doi:10.21595/jve.2017.18737 fatcat:wp2taha2hbhuvlp27xxuham4qm

Numerical Analysis and Optimization of the Front Window Visor for Vehicle Wind Buffeting Noise Reduction Based on Zonal SAS k-ε Method

Zhendong Yang, Longgui Liu, Zhengqi Gu
2022 Applied Sciences  
Firstly, the accuracy of the simulation method was validated based on a benchmark problem.  ...  Numerical investigations were conducted to determine the effectiveness of the front window visor for wind buffeting noise reduction.  ...  Acknowledgments: The authors would also like to thank the reviewers for their valuable suggestions and kind work. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app12146906 fatcat:wokwqk3d7zhu5npdowbx7aqpbu

Transonic buffet characteristics of a 60-deg swept wing with design variations

H. R. BARNARD, M. E. LORES, J. F. MAYES
1970 Journal of Aircraft  
The most dependable buffet testing method found is that of Ray and Taylor.?  ...  W., ‘Simple Methods for the Prediction of Wing Buffeting Resulting from Bubble-Type Separation,’’ NPL Aero Rept. 1024, July 1962, National Physical Laboratory. 2 Ray, E. J. and Taylor, R.  ... 
doi:10.2514/3.44207 fatcat:nzvpvaesknb7voffzjfjwtaeem

Applications of the multiple timescale spectral analysis in wind engineering [chapter]

V Denoël
2016 Insights and Innovations in Structural Engineering, Mechanics and Computation  
The random response of civil engineering structures to the buffeting action of wind loads is typically composed of several components, usually referred to as the background component, in the low frequency  ...  This paper briefly pictures this particular theory based on perturbation methods, and provides illustrations of its applicability to the problems cited above.  ...  INTRODUCTION The steady state statistics of the response of structures with a linear structural behavior subject to the buffeting action of turbulent winds are usually determined in the frequency domain  ... 
doi:10.1201/9781315641645-107 fatcat:bsmscka7njgrba3gbc25ppfjtm

Page 17 of Child Welfare Vol. 39, Issue 4 [page]

1960 Child Welfare  
Vigorous experimenta- tion with new methods of work” and creative use of the dynamic of authority, rather than self-righteous insistence that the client fit the methods we happen to have, must be the order  ...  The unique capacity for self-duplication guaranteed con- tinuity; the instability of primitive organic substances, buffeted by cosmic radiation, gave rise to a finite multitude of new forms, each subtly  ... 

Investigating cuisine experiences in the Maldives: A novel research method utilising tasting buffets

Mohamed Shenaan, Heike Schänzel, Tracy Berno
2021 Journal of Tourism and Gastronomy  
This study aims to address this methodological gap by introducing tasting buffets as a novel research method.  ...  Buffets, which included local dishes, were arranged at three guesthouses on three different local islands in the Maldives.  ...  This paper is primarily focussed on the tasting buffet method utilised to explore food tourism experiences of the participants.  ... 
doi:10.3727/216929722x16354101931998 fatcat:lth4wre5zje4vi3elv6etzoge4

Non-Stationary Turbulent Wind Field Simulation of Long-Span Bridges Using the Updated Non-Negative Matrix Factorization-Based Spectral Representation Method

Zidong Xu, Hao Wang, Han Zhang, Kaiyong Zhao, Hui Gao, Qingxin Zhu
2019 Applied Sciences  
Results show that the updated method performs well in generating the non-stationary turbulent wind field.  ...  Specifically, the evolutionary power spectral density (EPSD) is estimated to characterize the non-stationary feature of the field-measured wind data during Typhoon Wipha at the Runyang Suspension Bridge  ...  Author Contributions: Z.X. performed the numerical simulation; H.W., H.Z. and K.Z. analyzed the data; H.G. and Q.Z. wrote the manuscript; all authors reviewed the manuscript.  ... 
doi:10.3390/app9245506 fatcat:dui5ga7plbhinglkgav4x3jrti

Page 165 of Kansas Bar Association. The Journal of the Kansas Bar Association Vol. 1, Issue 2 [page]

1932 Kansas Bar Association. The Journal of the Kansas Bar Association  
He resigns himself to his fate and in the evolutionary process is developing a hide impervious to all the thrusts and buffetings directed at him.  ...  Most of the lawyers of the state are convinced that there is a better method of selecting judges than by forcing them to enter the political arena and become candidates for office.  ... 

Page 165 of Kansas Bar Association. The Journal of the Kansas Bar Association Vol. 1, Issue 2 [page]

1932 Kansas Bar Association. The Journal of the Kansas Bar Association  
He resigns himself to his fate and in the evolutionary process is developing a hide impervious to all the thrusts and buffetings directed at him.  ...  Most of the lawyers of the state are convinced that there is a better method of selecting judges than by forcing them to enter the political arena and become candidates for office.  ... 

Numerical simulation of wind effects: A probabilistic perspective

Ahsan Kareem
2008 Journal of Wind Engineering and Industrial Aerodynamics  
Digital filtering (time-series approach)-based schemes Parametric time-series methods The digital filtering based schemes offer efficient methods of simulating random processes.  ...  In order to accomplish these tasks, methods based on the time, frequency, or time-frequency domains are employed.  ...  the years.  ... 
doi:10.1016/j.jweia.2008.02.048 fatcat:7fre4lzolbh37djrbsvyd3rlzu
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