The shearing strain has the effect of distorting the shape of any portion of the body without altering its volume.
At such a place the shearing strain tends to become infinite, and some 149 permanent set is produced by torsion.
If we disregard the moorings, a straight bridge would tend to curve downstream and open out under a shearing strain.
The amount of the shearing strain is S/μ, and the quantity μ is the “rigidity.”
|shear strain or shearing strain |
See under strain.
|shear modulus |
See under modulus of elasticity.