A viscoelastic-plastic constitutive model for uniaxial ratcheting of polymers

What is it about?

In this paper, a modified viscoelastic–plastic constitutive model has been proposed on the framework of Anand's work to describe the uniaxial ratcheting behavior of polycarbonate (PC) under tension–tension cyclic loading. The deformation resistance in the viscoelastic micromechanism is assumed to be evolving with the local accumulated inelastic strain rather than keeping unchanged in the original Anand's model. It is shown that the proposed model can predict reasonably the uniaxial tension–tension ratcheting behavior of polymer.

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