The elastic limit is the maximum stress or force per unit area within a solid material that can arise before the onset of permanent deformation. Beyond this point, the material will not return to its original shape when the stress is removed, leading to plastic deformation.

Elastic Limit

elastic limit

maximum stress

Force per unit area is known as pressure, a fundamental concept in physics that quantifies the distribution of force over a surface. It is crucial in understanding how forces are applied in fluids, solids, and gases, influencing phenomena such as buoyancy, atmospheric pressure, and material stress responses.

force per unit area

solid material

permanent deformation

original shape

Stress removal

Plastic deformation is the permanent change in shape or size of a material under stress, beyond its elastic limit, where it does not return to its original form upon removal of the force. It is a critical consideration in material science and engineering, affecting the durability and performance of materials under load.

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