Nonconservative Stability by Finite Element
Nonconservative stability of continuous systems has received considerable theoretical attention in recent years. This class of stability problems is examined herein by application of the...

Airfoil and Bridge Deck Flutter Derivatives
The writers compare the flutter phenomena of the suspension bridge and the airfoil and employ a free-oscillation experimental method to measure model bridge flutter coefficients analogous...

Drag Forces on Baffle Blocks in Hydraulic Jumps
Large bluff-shaped objects (baffle blocks) placed in the jump improve the hydraulic jump performance characteristics. Knowledge of the drag force on the blocks would aid in determining...

Procedure for Automating Aircraft Wing Structural Design
A computer program entitled Design of Aircraft Wing Structures (DAWNS) is described. Particular methods used to incorporate the analytical procedures required from the aerodynamic and...

Newport Bridge Superstructure
The superstructure of the Newport Bridge embodies advanced features relating principally to aerodynamic stability, cables, cable anchorages, and cable wrapping. Wind tunnel tests were...

Lift-Oscillator Model of Vortex-Induced Vibration
The main feature is the representation of fluctuating lift behavior in terms of a proposed wake-oscillator. The primary purpose of the paper is to demonstrate the potential of the wake-oscillator...

Aeroelastic Galloping of Prismatic Bodies
Galloping oscillations of long prismatic bodies with aerodynamically unstable cross sections in the direction normal to that of the acting steady wind are analyzed. Principally, the steady...

Aerodynamic Investigations of Box Girder Bridges
Box girder bridge decks have recently come into wider use. This is of particular interest in the case of suspension bridges where deck form strongly affects the possible response to wind...

Aerodynamic Instability of Suspension Bridges
A general linearized analytical theory for the flutter of suspension bridge decks under uniform steady wind is presented. In this theory, the essential aerodynamic forces are presumed...

Ablative Coatings for Structural Fire Protection
If ablative coatings are used to protect reentry vehicles under severe aerodynamic heating, why can they not be used to protect structural steel in fires? To answer this question, it is...

Similitude Problems in Building Aerodynamics
Use of model techniques for determining pressure distribution and wind loads on buildings is considered. None of existing simplified laws adequately accounts for velocity distribution...

Stability of a Bar Under Eccentric Follower Force
A uniform cantilevered bar subjected at the free end to an eccentric, compressive follower force is considered. It is shown that, for cross sections having two axes of symmetry and vanishing...

Vibration Frequencies of the Chesapeake Bay Bridge
The aerodynamic causes of suspension bridge oscillations, i.e., vortex theory, flutter theory, and negative slope theory are examined. Thirteen factors to be considered in the design of...

Aerodynamic Stability of H Sections
A theory is developed for an H section under lateral wind loading to explain the dynamic stability of girder-stiffened suspension bridges. The mathematical model presupposes, as the most...

Jet Transport Characteristis Related to Airports
The changes in design and performance of jet transports, since they were first introduced in commercial service, are reviewed, particularly as these changes affect airports. The trend...

Wind Forces on Structures: Forces on Enclosed Structures
Recognizing that the civil engineer needs to know more about the aerodynamic characteristics of structures, this paper analyzes the work of past and present investigators and correlates...

Wind Induced Vibration of Cylindrical Structures
With reference to problem of designing tall stacks wind tunnel investigations were made to determine dynamic behavior of cylindrical sections under action of wind at high Reynold's...

Aerodynamic Stability of Suspension Bridges: 1952 Report of the Advisory Board on the Investigation of Suspension Bridges
DataNotAvailable...

Aerodynamic Stability of Suspension Bridges: Progress Report of the Advisory Board on the Investigation of Suspension Bridges
DataNotAvailable...

Aerodynamic Theory of Bridge Oscillations
DataNotAvailable...

 

 

 

 

Return to search