Definition:Plastic Region

Definition

Let a body $\BB$ be deformed under stress.

Consider the following stress-strain diagram.

The plastic region is the line $BD$, in which when the stress is removed, $\BB$ no longer returns to its original shape, but takes on a deformation, known as a permanent set.

Also see

• Definition:Permanent Set
• Definition:Yield Stress
• Definition:Elastic Region

• Results about plastic region can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): Hooke's law
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Hooke's law