Stress vs Strain
Stress describes the force applied to a material (per unit area) from an external source, permanent deformations in the materials, and/or uneven heating. It has the units [Pascals]. Normal Stress is the stress applied normal to the face of the material. If the normal stress results in a decreasing of the axial length of the material it is called compressive stress, and if the axial length increases it is called tensile stress. If the normal stress is applied everywhere on the…