Comparison of dilatant plasticity models in application to rubber‐toughened polymers. Issue 1 (October 2016)

• Record Type: Journal Article
• Authors: Hund, Jonas; Naumann, Johanna; Seelig, Thomas
• Is Part Of: Proceedings in applied mathematics and mechanics. Volume 16:Issue 1(2016)
• Page Start: 349
• Page End: 350
• Publication Date: 2016-10
• Subjects: Applied mathematics -- Periodicals; Engineering mathematics -- Periodicals; Mathematical physics -- Periodicals; 519
• DOI: 10.1002/pamm.201610163
• Languages: English
• ISSNs: 1617-7061

Abstract

Abstract: The overall deformation behavior of rubber‐toughened polymers (e.g. PC/ABS blends) exhibits a pronounced plastic dilatancy. As this volume increase results from diverse micromechanisms the appropriate structure of a macroscopic model is not obvious. In this contribution, different material models featuring plastic dilatancy are compared with regard to their ability to capture the deformation behavior of PC/ABS in different loading situations. All models are calibrated to match experimental data under uniaxial tension in terms of true stress‐strain curves and the evolution of volume strain. Afterwards they are employed in finite element (FE) simulations of single‐edge‐notch‐tensile (SENT) tests. Patterns of plastic deformation computed from the different material models are compared to experimental findings. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)