Influence of temperature and strain rate on the mechanical behavior of three amorphous polymers: Characterization and modeling of the compressive yield stress

By Julien Richeton, Saïd Ahzi, Kenneth S. Vecchio, F. Jiang, R. Adharapurapu. 2006

571 citations recorded by the source corpus.

Abstract Uniaxial compression stress–strain tests were carried out on three commercial amorphous polymers: polycarbonate (PC), polymethylmethacrylate (PMMA), and polyamideimide (PAI). The experiments were conducted under a wide range of temperatures (−40 °C to 180 °C) and strain rates (0.0001 s −1 up to 5000 s −1 ). A modified split-Hopkinson pressure bar was used for high strain rate tests. Temperature and strain rate greatly influence the mechanical response of the three polymers. In particular, the yield stress is found to increase with decreasing temperature and with increasing strain rate. The experimental data for the compressive yield stress were modeled for a wide range of strain rates and temperatures according to a new formulation of the cooperative model based on a strain rate/temperature superposition principle. The modeling results of the cooperative model provide evidence on the secondary transition by linking the yield behavior to the energy associated to the β mechanical loss peak. The effect of hydrostatic pressure is also addressed from a modeling perspective.

Subfields: Mechanics of Materials, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/3b350f93f47f9b5f834da3b0150b42ec605c63a7

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Mechanics of Materials

In Polymers and Plastics

Citations in the corpus

High Strain Rate Mechanics of Polymers: A Review (2016, background): “However, with increasing strain rate, this strain hardening effect is balanced by adiabatic heating in the material, which ultimately dominates over the hardening from resistance to polymer chain alignment [94, 96, 124, 130, 137, 142].”
Mechanical and Volumetric Fracturing Behaviour of Three-Dimensional Printing Rock-like Samples Under Dynamic Loading (2020, background): “The strain rate effect on the mechanical properties of 3D-printed resin is believed to be associated with secondary molecular processes, which means that increasing the loading rate decreases the molecular mobility of polymer chains, thus stiffening the chains (Richeton et al. 2006).”
Fatigue behavior and modeling of short fiber reinforced polymer composites: A literature review (2015, background): “As a result, shorter effective length of polymer chains is supporting the load and the material shows lower ductility and higher tensile strength and elastic modulus (Chou et al., 1973; Richeton et al., 2006).”
A thermo-mechanically-coupled large-deformation theory for amorphous polymers in a temperature range which spans their glass transition (2010, methodology): “(4.30) Finally, guided by the literature (e.g., Eyring, 1936; Fotheringham and Cherry, 1976, 1978; Povolo and Hermida, 1995, 1996; Richeton et al., 2005, 2006, 2007) and our own recent paper Ames et al. (2009), for the flow function f in (4.30) we choose a thermally-activated relation in the…”