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Structural Modeling of Double-Braided Synthetic Fiber Ropes

机译：双编织合成纤维绳的结构建模

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This study is primarily concerned with the performance of double-braided ropes, widely used in marine applications. The mechanical properties of such ropes are obtained by combining their structural features and the constitutive behavior of individual rope components. Emphasis in this study is on the tensile behavior of straight ropes as well as bent ropes, either an eye splice or in a continuous loop around a bollard-like pin. In the former case, precycling and water effects on the model predictions are discussed. For new small ropes, bending rigidity is negligible, so the bending effect is considered by modifying the geometry of the rope to allow for variation of helix periods and change of cross-sectional shapes from circular to elliptical (flattened). For two extreme frictional conditions considered, i.e., infinite and zero friction, predictions of small nylon rope behavior agree well with experimental results for both simple tension and tension plus bending. There is less agreement for small PET ropes, particularly in bending tests.
机译：这项研究主要涉及广泛用于船舶应用的双编织绳的性能。这种绳索的机械性能是通过将其结构特征和各个绳索组件的本构特性相结合而获得的。这项研究的重点是直缆绳和弯曲缆绳的拉伸性能，无论是眼形接头还是系缆柱状销钉周围的连续环。在前一种情况下，讨论了预循环和水对模型预测的影响。对于新的小绳索，弯曲刚度可以忽略不计，因此可以通过修改绳索的几何形状来考虑弯曲效果，以允许改变螺旋周期以及将横截面形状从圆形更改为椭圆形（扁平化）。对于所考虑的两个极端摩擦条件，即无限摩擦和零摩擦，尼龙绳小的行为的预测与简单张力和张力加弯曲的实验结果非常吻合。对于小的PET绳索，尤其是在弯曲测试中，人们的共识很少。

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