Friday, February 24, 2006
shearing force
Definition: A force that acts parallel to a plane rather than perpendicularly, as with tensile or compressive force. A shear stress requires a combination of four forces acting over (most simply) four sides of a plane and produces two equal and opposite couples. It is measured as the ratio of one shearing force to the area over which it acts. The shear strain is the angular deformation in circular measure. The shear modulus is the ratio of the shear stress to the shear strain. Also Known As: shear
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Shear stress is the force applied by flowing liquid to its boundary. In this case, the liquid is storm water and the boundary is the channel surface. Shear stress is also occasionally referred to as the “tractive force.” Put simply, shear stress describes the force of water that is trying to drag the channel surface downstream with it..... http://shearstress.net/
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