Adhesive contact in filaments
Adhesive contact in filaments
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DOI：
10.1088/0022-3727/40/14/026
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发表时间：
2007-07
期刊：
影响因子：
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通讯作者：
Xiang-fa Wu;Y. Dzenis
中科院分区：
文献类型：
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作者：
Xiang-fa Wu;Y. Dzenis
本文研究了由表面粘附引起的纤维弹性接触，它在纤维材料的力学响应（如纤维摩擦、滑动、压缩滞后等）中起着重要作用。在此过程中，提出了一个简单的三维弹性接触模型。假设长丝是均匀、光滑的弹性圆柱体，并且根据布拉德利的方法（布拉德利1932 Phil. Mag.13853），其依赖于变形之前的细丝构型。在纤维表面粘附的作用下，基于DMT理论以封闭形式确定弹性变形和接触区的尺寸（Derjaguin等人1975 J.Colloid Interface Sci. 53 314）。通过数值模拟研究了纤维半径、纤维取向、表面能和弹性对弹性变形和接触区大小的影响。该模型可用于研究纤维材料在外部载荷作用下的纤维接触、摩擦、滑动和压缩滞后等机理。
This paper studies the elastic contact in filaments induced by surface adhesion, which plays an important role in the mechanical response of fibrous materials (e.g. fibre friction, sliding, compression hysteresis, etc). During the process, a simple 3D elastic contact model was proposed. The filaments were assumed to be uniform, smooth elastic cylinders and the adhesive force between filaments in contact was estimated according to Bradley's approach (Bradley 1932 Phil. Mag. 13 853) that relies on the filament configurations before deformation. Under the action of fibre surface adhesion, the elastic deformation and the size of the contact zone were determined in closed-form based on the DMT theory (Derjaguin et al 1975 J. Colloid Interface Sci. 53 314). Effects of filament radius and orientation, surface energies and elasticity on the elastic deformation and the size of the contact zone were explored numerically. The model developed in this work can be used for the study of the mechanisms of filament contacts, friction, sliding and compression hysteresis in fibrous materials subjected to external loading.