Results 11 to 20 of about 57,747 (310)

Nonlinear Flutter Analysis for a Long-Span Suspension Bridge

Shock and Vibration, 2021
The wind-induced flutter of the long-span suspension bridge structure is extremely harmful to the bridge. Therefore, it is necessary to study the nonlinear problem of wind-induced flutter.
Jieshan Liu, Fan Wang, Yang Yang, Renhuai Liu   +3 more
doaj   +1 more source

Comment améliorer l’enseignement et les apprentissages ?

Revue Internationale d’Éducation de Sèvres, 2006
From a survey conducted in the United-Kingdom, the author shows how the Student Voice movement has developed in schools and has allowed to understand students and the way they learn in a more subtle and refined way.
Julia Flutter
doaj   +1 more source

Experimental Investigations on Nonlinear Flutter Behaviors of a Bridge Deck with Different Leading and Trailing Edges

Applied Sciences, 2020
Recently, the nonlinear flutter behavior of long-span suspension bridges has attracted attention. Unlike the classical theory of bridge flutter, the stable limit cycle oscillations (LCO) have occurred for some bluff aerodynamic configurations when the ...
Wenjie Li, Shujin Laima
doaj   +1 more source

Flutter prediction, suppression and control in aircraft composite wings as a design prerequisite: a survey [PDF]

, 2007
Emergence of flutter compromises not only the long-term durability of the wing structure, but also the operational safety, flight performance and energy efficiency of the aircraft. Effectual means of flutter prevention are, therefore, mandatory in the
Njuguna, James A. K.
core   +1 more source

Supersonic Flutter of Circular Cylindrical Shells [PDF]

, 1966
Various experimental and theoretical studies on the supersonic flutter of circular cylindrical shells are discussed. Results of experiments in the Mach number range 2.5 - 3.5 are presented.
Olson, Mervyn Daniel
core   +1 more source

Nonlinear Flutter Analysis of Rudder System Containing Freeplay [PDF]

Hangkong bingqi
The nonlinear flutter of vehicle rudder system significantly impacts its stability and safety. This paper conducts modeling and computation of linear and nonlinear flutter in missile rudder systems containing freeplay， analyzes the mechanisms of ...
Zhang Kaimin, Deng Xueya, Chen Liye
doaj   +1 more source

The effect of laminate lay-up on the flutter speed of composite wings. [PDF]

, 2003
This paper presents an analytical study on optimization of a laminated composite wing structure for achieving a maximum flutter speed and a minimum weight without strength penalty.
Guo, Shijun J., Bannerjee, J. R., Cheung, C. W.   +2 more
core   +1 more source

Research on the Flutter Stability of Bridge Sections Based on an Empirical Formula of an Aerostatic Three-Component Coefficient

Buildings, 2022
In order to study the relationship between an aerostatic three-component coefficient (ATCC) and bridge flutter and to quickly evaluate the flutter performance of bridges, we proposed a method based on the empirical formula of the ATCC.
Hui Gao, Feng Wang, Qinghai Guan, Huifang Hou, Jiawu Li   +4 more
doaj   +1 more source

Diaphragmatic flutter [PDF]

Postgraduate Medical Journal, 1977
Summary A case is reported of diaphragmatic flutter with an unusually long duration of symptoms. The patient described demonstrates many of the classical features of this disorder.
openaire   +2 more sources

Flutter analysis of the IAR 99 SOIM aircraft [PDF]

INCAS Bulletin, 2013
Flutter analysis is considered for the minimum altitude at which the minimum designed Mach number is achieved, for the maximum altitude at which the maximum designed dynamic pressure is obtained and for the minimum altitude at which transonic effects ...
Dorin LOZICI-BRINZEI, Simion TATARU, Daniela BARAN   +2 more
doaj   +1 more source