ABSTRACT
5.1 Main Types of Stress
When a body is subjected to external forces, internal reactive forces between the particles within the body are produced. These internal reactive forces are in equilibrium with the external forces. The internal force per unit of an area is called stress [1]. The main types of stress are as follows:
Tensile stress which occurs in a body subjected to a tensile force P (Fig. 5.1a)
Compressive stress which occurs in a body subjected to a compressive force P (Fig. 5.1b)
Shear stress which occurs in a body subjected to a shearing force Ps (Fig. 5.1c) that results in one part of the body to slide with respect to the adjacent part.
