Anisotropic mechanical response of layered disordered fibrous materials.
Anisotropic mechanical response of layered disordered fibrous materials.
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层状无序纤维材料的各向异性机械响应。
DOI：
10.1103/physreve.102.062502
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Houghton MR
中科院分区：
文献类型：
--
作者：
Houghton MR
机械粘合织物占非织造布产品的很大一部分，并服务于非织造布制造的许多利基领域。这种织物的特点是由无序的纤维网层，但我们缺乏这样的微观结构如何确定散装材料的响应的理解。在这里，我们数值确定的线性剪切响应的针刺织物建模为交联片的二维（2D）天皇网络。我们系统地改变内片纤维密度，片间分离距离，和剪切方向，并量化的宏观剪切模量旁边的亲和力和能量分配的程度。对于平行于片材的剪切，响应主要由内纤维主导，并且遵循2D Mikado网络的已知趋势。相比之下，垂直于纸张的剪切引起由内部或intersheet纤维取决于纸张分离和纤维密度之间的二次关系主导的较软的响应。这些基本趋势是复制和阐明了一个简单的缩放参数，我们提供。我们讨论的背景下，真实的非织造织物的影响，我们的研究结果。
Mechanically bonded fabrics account for a significant portion of nonwoven products, and serve many niche areas of nonwoven manufacturing. Such fabrics are characterized by layers of disordered fibrous webs, but we lack an understanding of how such microstructures determine bulk material response. Here we numerically determine the linear shear response of needle-punched fabrics modeled as cross-linked sheets of two-dimensional (2D) Mikado networks. We systematically vary the intra-sheet fiber density, inter-sheet separation distance, and direction of shear, and quantify the macroscopic shear modulus alongside the degree of affinity and energy partition. For shear parallel to the sheets, the response is dominated by intrasheet fibers and follows known trends for 2D Mikado networks. By contrast, shears perpendicular to the sheets induce a softer response dominated by either intrasheet or intersheet fibers depending on a quadratic relation between sheet separation and fiber density. These basic trends are reproduced and elucidated by a simple scaling argument that we provide. We discuss the implications of our findings in the context of real nonwoven fabrics.
向列有序半柔性聚合物网络中的仿射-非仿射转变。
DOI：
--
发表时间：
2010
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
作者：
Andrew R. Missel;Mo Bai;W. Klug;A. Levine
通讯作者：
A. Levine
DOI：
10.2172/1577437
发表时间：
2019-03
期刊：
--
影响因子：
--
作者：
S. Balay;S. Abhyankar;M. Adams;Jed Brown;P. Brune;K. Buschelman;Lisandro Dalcin;A. Dener;
通讯作者：
S. Balay;S. Abhyankar;M. Adams;Jed Brown;P. Brune;K. Buschelman;Lisandro Dalcin;A. Dener;
影响因子：
2.4
作者：
Huisman, E. M.;Storm, C.;Barkema, G. T.
通讯作者：
Barkema, G. T.