An understanding of stress and strain is essential for the analysis of plastic deformation. Often the words stress and strain are used synonymously by the non-scientific public. In engineering usage, however, stress is the intensity of force and strain is a measure of the amount of deformation.
Stress is defined as the intensity of force at a point.
If the stress is the same everywhere in a body,
As shown in Figure 3.1, there are nine components of stress. A normal stress component is one in which the force is acting ...