镀铜碳纤维丝束细观耐磨性的有限元仿真模拟

针对碳纤维丝束在织造过程中易出现断经和起毛的问题,提出在碳纤维丝束表面镀铜以提高丝束耐磨性。首先在Solidworks中建立树脂基碳纤维丝束细观模型,利用ABAQUS对开口时碳纤维丝束与镀铜综丝眼之间的滑动摩擦损伤进行仿真模拟,并运用纤维复合材料渐进损伤失效模型进行损伤演化分析;将树脂基碳纤维丝束改为镀铜碳纤维丝束,通过拉伸模拟验证了丝束模型的可行性,运用Archard模型对镀铜碳纤维丝束进行耐磨性仿真模拟;最后在ABAQUS中模拟仿真纤维的硬挺度。结果表明:当镀铜层厚度为1.0 μm时,仿真预测的镀铜碳纤维丝束耐磨次数约是上浆碳纤维丝束(上浆率为0.32%、浆液质量分数为3%)耐磨次数的2倍;在碳纤维丝束表面镀0.5~1.0 μm的铜层时具有良好的可织性。

Finite element simulation on wear resistance of copper-plated carbon fiber tows

In order to improve the abrasion resistance of carbon fiber tow, copper plating on the surface of carbon fiber tow was proposed. Firstly, a mesoscopic model for resin-based carbon fiber tow was established in Solidworks, and the sliding friction damage between a carbon fiber tow and a copper-plated heald wire eye during shedding was simulated using ABAQUS, and the progressive damage failure model of fiber composite was used for the damage evolution analysis. Then the resin-based carbon fiber tow was changed to copper-plated carbon fiber tow, and the feasibility of the model was verified by simulation of tensile loading. The wear resistance of copper-plated carbon fiber tow was simulated by Archard model. Finally, the stiffness of the fiber tow was simulated using ABAQUS. The results show that when the thickness of copper plating layer is 1.0 μm, the wear resistance predicted by the simulation of a copper-plated carbon fiber tow is about twice that of a carbon fiber tow with a sizing rate of 0.32% and a slurry mass fraction of 3%. Carbon fiber tow plated with 0.5-1 μm copper layer demonstrates optimal weavability.