- the gradient of a shear stress force through the body (in solid mechanics);
- the flow induced by such a force gradient (in a fluid).
In this article the first definition from solid mechanics is used. See Viscosity for a fuller treatment about the term from fluid dynamics.
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.
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
- 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
- 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