Shear flow
From Wikipedia, the free encyclopedia
Shear flow is:-
- in a solid body, the gradient of a shear force through the body;
- in a fluid, it is the flow induced by such a force gradient - see Viscosity for a fuller treatment.
[edit] Dimensions
In solid mechanics, shear flow is given in dimensions of force per length. This corresponds to units of newtons per meter in the SI system and pound-force per foot in the English Engineering and British Gravitational systems.
[edit] Shear flow in semi-monocoque structures
The equation for shear flow in a particular web section of the cross-section of a semi-monocoque structure is:
- q - the shear flow through a particular web section of the cross-section
- Vy - the shear force perpendicular to the neutral axis x through the entire cross-section
- Qx - the first moment of area about the neutral axis x for a particular web section of the cross-section
- Ix - the second moment of area about the neutral axis x for the entire cross-section
[edit] Sources
- Riley, W. F. F., Sturges, L. D. and Morris, D. H. Mechanics of Materials. J. Wiley & Sons, New York, 1998 (5th Ed.), 720 pp. ISBN 0-471-58644-7
