Dissipated energy or ALL PD it is the amount of energy that the structure loses due to its hysteresis behavior in the plastic behavior range when loading.If the force is slowly removed from the beam, the sample length will be reduced. If the material is in the elastic zone, its length is returned to its original value. On the other hand, if the material passes through the elastic zone and is placed in the plastic zone, some permanent deformation will remain inside it. In both cases, the strain energy is restored to work.

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