PPT Slide

Kinematics of Finite Plastic Deformation

It is clear that

However, for most of the metals the elastic strain is neglegible compared to the plastic strain in the case of large deformation, so is reasonable to assume that

Ve ? I + ?e

By ignoring higher-order infinitesimal quantities

Note : Theory using E, Ep, Ee is the Material or Lagrangian description

Theory using D, Dp, De is the Spatial or Eulerian description

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