Hydrostatic pressure dependence in tensile and compressive behavior of an acrylonitrile–butadiene–styrene copolymer. Issue 23 (26th February 2022)

• Record Type: Journal Article
• Authors: Verbeeten, Wilco M. H.; Sánchez‐Soto, Miguel; Maspoch, Maria Lluisa
• Is Part Of: Journal of applied polymer science. Volume 139:Issue 23(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-26
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.52295
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: The strain‐rate dependence of a commercial grade ABS copolymer has been analyzed in both compression and tension. By measuring in two loading geometries, the hydrostatic pressure‐dependence on the material's deformation behavior can be established. An alternative method to determine pressure‐dependence, based on the difference in strain‐rate dependence for various loading geometries, has been presented. It was shown to be an effective technique, both for thermorheologically simple materials such as ABS, as well as thermorheologically complex materials, for example, PMMA. A yield criterion, based on an Eyring‐type pressure‐modified rate equation, has been compared to finite element simulations using the Eindhoven Glassy Polymer (EGP) constitutive model. Although both methods give quantitatively similar results for the yield stress prediction, only the fully 3D EGP model is able to represent the large‐strain deformation behavior. Abstract : The strain‐rate dependence for an ABS and a PMMA polymer have been analyzed in both compression and tension to determine hydrostatic pressure‐dependence. For ABS, a yield criterion has been compared to finite element simulations using the EGP model. Both methods give quantitatively similar results for yield stress prediction, but only the FE model is able to represent the large‐strain deformation behavior.