Criticality and mechanical enhancement in composite fiber networks

被引:16
|
作者
van Doorn, Jan Maarten [1 ]
Lageschaar, Luuk [1 ]
Sprakel, Joris [1 ]
van der Gucht, Jasper [1 ]
机构
[1] Wageningen Univ, Phys Chem & Soft Matter, Stippeneng 4, NL-6708 WE Wageningen, Netherlands
基金
欧洲研究理事会;
关键词
ELASTIC NETWORKS; PERCOLATION; HYDROGELS; STRENGTH; TOUGH;
D O I
10.1103/PhysRevE.95.042503
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Many biological materials consist of sparse networks of disordered fibers, embedded in a soft elastic matrix. The interplay between rigid and soft elements in such composite networks leads to mechanical properties that can go far beyond the sum of those of the constituents. Here we present lattice-based simulations to unravel the microscopic origins of this mechanical synergy. We show that the competition between fiber stretching and bending and elastic deformations of the matrix gives rise to distinct mechanical regimes, with phase transitions between them that are characterized by critical behavior and diverging strain fluctuations and with different mechanisms leading to mechanical enhancement.
引用
收藏
页数:7
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