Research Article

Viscoelastic-Viscoplastic Modelling of the Scratch Response of PMMA

Figure 2

Stress/strain curve of amorphous glassy polymers in tensile test: the small strain level corresponds to linear viscoelasticity, the large strain level can be well described by an elastic-viscoplastic model, and the middle strain level should account for both viscoelasticity and viscoplasticity.
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