A concise finite element model for three-layered straight wire rope strand
A concise finite element model for three-layered straight wire rope strand
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DOI：
10.1016/s0020-7403(98)00111-8
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发表时间：
2000-01-01
影响因子：
7.3
通讯作者：
Walton, JM
中科院分区：
文献类型：
--
作者：
Jiang, WG;Henshall, JL;Walton, JM
建立了三层直螺旋钢丝绳股在轴向载荷（拉伸和扭转）作用下的简化有限元模型。结构离散采用三维实体单元。股线的螺旋对称性被用来建立精确的边界条件。接触，摩擦和塑性屈服也被考虑在内。对于钢丝绳股的整体性能，即载荷与应变和载荷与扭矩（固定端）或载荷与股捻率（自由端），有限元结果显示与Utting和Jones的实验结果（Journal of Strain Analysis for Engineering Design 1988;23（2）：79-86）的一致性优于使用Costello的分析股模型计算的结果（Theory of Wire Rope，第2版，纽约：Springer，1997）。此外，有限元模型允许确定局部应力分布。特别是，该模型揭示了网格点接触引起的外层螺旋线应力分布的不均匀性。这是特别相关的固定端的情况下，本分析预测的轴向拉伸刚度与实验观察（Utting和琼斯），而Costello的模型预测的刚度显着更高。(C)1999 Elsevier Science Ltd.保留所有权利。
A concise finite element model (FEM) of three-layered straight helical wire rope strand under axial loads (tensile and torsional) is presented in this paper. Three-dimensional solid elements were used for structural discretization. The helical symmetry of the strand was used to establish accurate boundary conditions. Contact, friction and plastic yielding were also taken into account. For the global behaviour of wire rope strand, i.e. load vs. strain and load vs. torque (fixed-end) or load vs. strand twist rate (free-end), the finite element results showed better agreement with the experimental results of Utting and Jones (Journal of Strain Analysis for Engineering Design 1988;23(2):79-86) than those calculated using the analytical strand model of Costello (Theory of Wire Rope, 2nd ed. New York: Springer, 1997). In addition, the FE model allows the localised stress distribution to be determined. In particular, this model reveals the non-uniform stress distribution in the outer layer helical wires caused by the trellis point contact. This is particularly relevant in the fixed-end case, where the present analysis predicts an axial tensile rigidity in good agreement with the experimental observations (Utting and Jones), whereas Costello's model predicts a significantly higher rigidity. (C) 1999 Elsevier Science Ltd. All rights reserved.