Abstract A new type of stranded carbon fiber composite core (CFCC) wire has been developed to improve the properties of the bending, torsion and resistance to lateral pressure of the carbon fiber wire. The over-sliding process of CFCC wire under the coupling actions of pulling and bending loads is the key factor to determine whether the CFCC wire is damaged or not. A CFCC wire is taken as an example to study how the bottom diameter of the pulley put impact upon the strand damage and the damage mechanism. A full-size model of CFCC wire is established with the nonlinear finite element method to study the over-sliding process. The results show that the strand damage will be improved with the increasing of the bottom diameters of the pulley, whereas the equivalent plastic strain and energy loss of the strand will decrease. It is also found that the CFCC wire damage is beyond the reasonable range when the pulley is 20 times the diameter of the CFCC wire. Moreover, it is suggested that the CFCC wire strand damage is within the allowable range when the bottom diameter of the pulley is not less than 25 times the CFCC wire diameter.

中文翻译：

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基于有限元法的CFCC钢丝滑轮损伤分析

摘要 为了提高碳纤维线材的弯曲、扭转和抗侧压性能，开发了一种新型绞合碳纤维复合芯线（CFCC）。CFCC线在拉弯载荷耦合作用下的过滑过程是决定CFCC线是否损坏的关键因素。以一根CFCC线材为例，研究滑轮底径对钢绞线损伤的影响及损伤机理。采用非线性有限元方法建立CFCC线全尺寸模型，研究超滑过程。结果表明，随着滑轮底径的增大，钢绞线损伤得到改善，而钢绞线的等效塑性应变和能量损失将减小。还发现当滑轮为CFCC线径的20倍时，CFCC线损伤超出合理范围。另外，建议滑轮底径不小于CFCC线径的25倍时，CFCC线股损伤在允许范围内。