Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 136, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3682779
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Funding
- National University of Singapore [R279-000-214-133, R279-000-214-731]
- Singapore-MIT Alliance
- NUS Graduate School for Integrative Sciences and Engineering (NGS)
- Global Enterprise for Micro-Mechanics and Molecular Medicine (GEM4)
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The microstructural basis of the characteristic nonlinear mechanics of biopolymer networks remains unclear. We present a 3D network model of realistic, cross-linked semiflexible fibers to study strain-stiffening and the effect of fiber volume-occupancy. We identify two structural parameters, namely, network connectivity and fiber entanglements, that fully govern the nonlinear response from small to large strains. The results also reveal distinct deformation mechanisms at different length scales and, in particular, the contributions of heterogeneity at short length scales. (C) 2012 American Institute of Physics. [doi:10.1063/1.3682779]
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