Science Fair Project Encyclopedia
Shear stress is a stress state where the shape of a material tends to change (usually by "sliding" forces - torque by transversely-acting forces) without particular volume change. The shape change is evaluated by measuring the change of the angle's magnitude (shear strain).
Structural members in pure shear stress are the torsion bars and the driveshafts in automobiles. Riveted and bolted joints may also be mainly subjected to shear stress. Cantilevers, beams, consoles and column heads are subject to composite loading, consisting of shear, tensile and compressive stress.
A simple definition of Shear Stress, is 'The components of stress at a point that act parallel to the plane in which they lie'.
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details