Download - Som 02 Strain
Deformation
The vertical line is lengthened, the horizontal line is shortened, and the inclined line changes its length and rotates.
Shear Strain
Normal strains cause a change in volume of the element
Shear strains cause a change in its shape.
Both of these effects occur simultaneously during the deformation.
Example 2-3Due to a loading, the plate is deformed into the dashed shape. Determine (a) the average normal strain along the side AB, and (b) the average shear strain in the plate at A relative to the x and y axes.
F2–3. The rectangular plate is deformed into the shape of a rhombus shown by the dashed line. Determine the average shear strain at corner A with respect to the x and y axes.
F2–4. The triangular plate is deformed into the shape shown by the dashed line. Determine the normal strain developed along edge BC and the average shear strain at corner A with respect to the x and y axes.
F2–5. The square plate is deformed into the shape shown by the dashed line. determine the average normal strain along diagonal AC and the shear strain of point E with respect to the x and y axes.