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The influence of the filler volume fraction on the mechanical behaviour of thermoplastic materials
Author(s) -
Kletschkowski Thomas,
Schomburg Uwe,
Betram Albrecht
Publication year - 2004
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200410093
Subject(s) - viscoplasticity , materials science , composite material , filler (materials) , hysteresis , volume fraction , thermoplastic , nonlinear system , constitutive equation , thermodynamics , finite element method , physics , condensed matter physics , quantum mechanics
Uniaxial experiments clarify that the mechanical behaviour of PTFE compounds depends strongly on the amount of filler particles. In order to describe these dependencies, a finite endochronic viscoplastic material model based on material isomorphisms has been applied to various glass fibre filled PTFE compounds. The model allows to characterize viscoplastic material behaviour with equilibrium hysteresis using a rate‐independent endochronic elastoplastic model in parallel connection with a nonlinear Maxwell model. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)