Structure-properties relation for random networks of fibers with noncircular cross section
Structure-properties relation for random networks of fibers with noncircular cross section
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DOI：
10.1103/physreve.95.033001
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发表时间：
2017-03-01
影响因子：
2.4
通讯作者：
Picu, R. C.
中科院分区：
文献类型：
--
作者：
Deogekar, S.;Picu, R. C.
本文研究了由具有两个主转动惯量的非圆截面纤维组成的三维交联无规纤维网络的力学行为。这种纤维以轴向变形模式和两种不同刚度的弯曲模式储存能量。我们表明，纤维的扭转刚度变得重要，因为它决定了两种弯曲模式的整体变形的相对贡献。建立了小应变模量与网络参数的标度关系。这些结构的大应变变形对横截面的形状不太敏感。
The mechanical behavior of three-dimensional cross-linked random fiber networks composed from fibers of noncircular cross section characterized by two principal moments of inertia is studied in this work. Such fibers store energy in the axial deformation mode and two bending modes of unequal stiffness. We show that the torsional stiffness of fibers becomes important as it determines the relative contribution of the two bending modes to the overall deformation. The scaling of the small strain modulus with the network parameters is established. The large strain deformation of these structures is less sensitive to the shape of the cross section.