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Micro‐Mechanical Modelling of Anisotropic Time‐Dependent Healing Effects in Rubber‐like Materials
Author(s) -
Weinhold Georg W.,
Itskov Mikhail
Publication year - 2010
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201010163
Subject(s) - softening , materials science , natural rubber , composite material , polymer , deformation (meteorology) , anisotropy , aggregate (composite) , filler (materials) , chain (unit) , physics , quantum mechanics , astronomy
Filler‐reinforced rubber‐like materials demonstrate deformation induced softening, known as the Mullins effect. This softening can be reversible in a certain range (healing). The previously introduced concept of network evolution (NE) explains the Mullins effect as the result of a filler‐polymer network rearrangement [1]. It is assumed that debonding of polymer chain segments from rigid aggregates does not effect the number of active segments. Furthermore, debonded chains are still active as a part of a longer chain. Now, considering the entropic vibration of polymer chains, entanglement of chains to the rough aggregate surfaces is assumed. This process inverse to the NE leads to a micro‐mechanical model of time‐dependent recovery of the deformation induced softening. (© 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)