What is the difference between stress and strain in materials?

What is the difference between stress and strain in materials?

Stress and strain are two fundamental concepts in materials science and engineering.

Stress:

Stress is a measure of the internal forces within a material that resist deformation. It is typically quantified as force per unit area. There are different types of stress, including tensile stress (stretching force), compressive stress (squeezing force), and shear stress (parallel sliding force).

Strain:

Strain, on the other hand, is the measure of deformation or change in shape experienced by a material in response to stress. It is expressed as the ratio of the change in size or shape to the original size or shape of the material.

The key difference between stress and strain is that stress is the force applied to a material, while strain is the resulting deformation or change in shape caused by that force.

Understanding the relationship between stress and strain is crucial in predicting and analyzing the mechanical behavior of materials under different loading conditions.

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