Alternative Explanation of Stiffening in Cross-Linked Semiflexible Networks

P. R. Onck, T. Koeman, T. van Dillen, E. van der Giessen
2005 Physical Review Letters  
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.
doi:10.1103/physrevlett.95.178102 pmid:16383874 fatcat:q64ncse2graqbbwwcggzaqcheq