Cable Equilibrium and Stability in a Steady Wind
A finite element representation for a cable subject to steady airflow is developed. Quasi-steady aerodynamics consisting of normal and tangential components is used. The model results...

Analytical Study of Suspension Bridge Flutter
A systematic procedure for investigating suspension bridge flutter is presented. As a prerequisite for flutter analysis the free vibration problem is considered first. The bridge is idealized...

Experimental Identification of Aerodynamic Forces
A semi-empirical method to assess aerodynamic forces acting on a two-dimensional bridge model is proposed. By integrating or differentiating numerically the acceleration or the displacement...

Effects of Turbulence on Bridge Flutter Derivatives
Bridge flutter derivatives have heretofore been obtained from models almost exclusively tested under oncoming laminar flow conditions. This paper demonstrates how a section model teest...

Commentary on the Tentative Recommendations for Cable-Stayed Bridge Structures
A commentary to support the Tentative Recommendations for Cable-Stayed Bridge Structures. The material presented is intended to explain and substantiate the information presented in the...

Motion of Suspension Bridge Subject to Wind Loads
Vertical and torsional motions of a suspension bridge due to wind loading are studied. Both, self-excited, due to bridge motion, and buffeting, independent of bridge motion, wind loads...

Motion of Suspended Bridge Spans under Gusty Wind
The buffeting response of suspended-span bridges can be calculated if certain wind-tunnel section model data, plus wind spectral information, are provided. The needed wind tunnel data...

Analytical Study of Suspension Bridge Flutter

Binary Flutter of Suspension Bridge Deck Sections
Wind tunnel experiments on models of suspension bridge deck sections with plate girders of various heights are made to show that binary flutter of suspension bridge deck sections can be...

Aerodynamic Investigations of In-Line Slender Towers

Torsional Flutter of Rectangular Prisms
Prismatic bar models tested are of rectangular cross section and are provided with different side ratios (depth/height) of 1, 2, 4, and 5. The position of axis of rotation of the model,...

Aspects of Dynamic Stability of Structures
The dynamic nature of the transient of a structure from stability to instability is emphasized. The need to consider flutter and the paradoxical effect of mass distribution and damping...

Yaw Effects on Galloping Instability
Quasisteady theory of galloping oscillations of slender prismatic structures, such as transmission lines, stay cables, etc. is extended to cover flows approaching at a yaw angle. From...

Indicial Aerodynamic Functions for Bridge Decks
With certain classical results for airfoils as a guide, lift and moment functions of the indicial type are derived for suspension bridge deck sections of either the open truss or streamlined...

Along-Wind Response of Large Bluff Buildings
The load-velocity relationship for large bluff buildings subjected to dynamic wind excitation is investigated. Using experimental results for the correlation structure of turbulent wind...

Aerodynamic Forces on a Triangular Cylinder
Wind tunnel studies have been conducted on flow around an equilateral triangular cylinder mounted with the point upstream. Instantaneous pressure measurements taken around the cross section...

Galloping Oscillations of Hysteretic Structures
The nature of the aerodynamic galloping oscillation of a hysteretic system is examined using approximate analytic and numerical techniques. It is shown that the hysteretic nonlinearity...

STOL Aircraft Flight and Landing Area Considerations
Current research to achieve a technically and socially acceptable short take-off and landing (STOL) aircraft system to help alleviate present air transportation congestion is outlined...

Beams Subjected to a Follower Force within the Span
Some unusual instability effects are shown to occur in beams subjected to a tangential follower force within the span. Depending on the support and load placement conditions either no...

Column Instability under Weight and Follower Loads
In this article, the interaction between two types of forces, causing instability of a vertically cantilevered column, is studied. These forces are the conservative force of the column's...

 

 

 

 

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