Deformation and failure maps for PMMA in uniaxial tension

TL;DR

This paper develops deformation and failure maps for PMMA under uniaxial tension across various temperatures and strain rates, identifying different material regimes and calibrating constitutive models.

Contribution

It provides comprehensive deformation maps and calibrated constitutive relations for PMMA near the glass transition, covering multiple regimes and strain rates.

Findings

Identified glassy, transition, and rubbery regimes in PMMA.

Constructed deformation maps for Young's modulus, flow strength, and failure strain.

Calibrated constitutive relations for different regimes.

Abstract

Uniaxial tensile tests are performed on a polymethyl methacrylate (PMMA) grade over a range of temperatures near the glass transition and over two decades of strain rate. Deformation maps are constructed for Young's modulus, flow strength, and failure strain as a function of temperature for selected strain rates. The glassy, glass transition and rubbery regimes are identified, and constitutive relations are calibrated for the modulus and flow strength within each regime.