The ______ strain is always angular and brings out the change in shape.

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The ______ strain is always angular and brings out the change in shape.
1. shear
2. normal
4. axial

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Correct Answer - Option 1 : shear

Explanation:

Shear strain is defined as the strain accompanying a shearing action. It is the angle in radian measure through which the body gets distorted when subjected to external shearing action.

When a body is under load, it will extend in the direction of the stress (longitudinal strain) and contract in the transverse or lateral direction (lateral strain), in case of longitudinal tensile stress.

• The ratio of change in length to the original length is called the longitudinal strain
• The ratio of change in diameter/breadth to original diameter/breadth is called the lateral strain
• The ratio of lateral strain to longitudinal strain is called the Poisson's ratio
• The volumetric strain of a deformed body is defined as the ratio of the change in volume of the body to the deformation to its original volume.

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