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On the Origin of Stiffening in Biopolymers

Published online by Cambridge University Press:  01 February 2011

Erik Van der Giessen ,
Teun Koeman ,
Teun Van Dillen  and
Patrick Onck
Erik Van der Giessen
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
Teun Koeman
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
Teun Van Dillen
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
Patrick Onck
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Abstract

Strain stiffening of protein networks is explored by means of a finite strain analysis of a two-dimensional network model of cross-linked semiflexible filaments. The results show that stiffening is caused by non-affine network rearrangements that govern a transition from a bending dominated response at small strains to a stretching dominated response at large strains. Thermally-induced filament undulations only have a minor effect; they merely postpone the transition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 874: Symposium l – Structure and Mechanical Behavior of Biological Materials , 2005 , L3.1/BB3.1
Copyright
Copyright © Materials Research Society 2005

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