It is very rare that differences between elastic and plastic deformation appear with our own eyes. We can't get it in lab, but we can see them on the example of FEM. Below are interesting results of the nonlinear numerical analysis of the stress in sheets was performed. The metal was cut in a terminological process, which of course was subject to deformation. Then such a bended sheet was straightened in a professional straightener FlatMaster® produkcji firmy ARKU Maschinenbau GmbH.
The result of this simulation were two films showing how dynamically elastic deformations change and how durable plastic deformations are.
Elastic deformation
Plastic deformation
