考虑股线接触与摩擦行为的710 mm^2碳纤维复合芯导线(ACCC)股线损伤分析  

Damage Analysis of 710 mm^2 ACCC Strands Considering the Contact and Friction Behavior between Strands

作　　者：陈平[1] 马勇 万建成[2] 江明[2] 汤广瑞[2] 周亚傲 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]中国电力科学研究院输变电工程研究所,北京100055

出　　处：《摩擦学学报》2017年第5期565-573,共9页Tribology

基　　金：国家自然科学基金项目(51305023);国网公司科技项目(GC71-16-017)资助~~

摘　　要：利用扫描电镜观察710 mm^2碳纤维复合芯导线(ACCC)过滑车试验后股线的磨损形貌,分析滑车底径对股线损伤的影响及股线损伤机制.同时,考虑股线间的接触与摩擦行为,建立导线全尺寸模型进行导线过滑车非线性动力学有限元分析.试验结果表明:导线过滑车后股线出现塑性变形与磨损,在股线表面初始磨损处以黏着磨损的形式扩展,且股线损伤随滑车底径的增大有所改善;数值分析表明:股线等效塑性应变与摩擦能量损耗开始于导线过滑车时的弯曲过程,且随滑车底径增大而减小,股线损伤的模拟结果与试验情况吻合.在此基础上,研究股线间摩擦系数对股线损伤影响,得到股线损伤随摩擦系数的减小而减小.研究初步认为滑车底径为30倍导线直径时股线损伤在可接受范围内.Worn surface morphologies of the tested 710 mm^2 ACCC strands were observed by scanning electron microscopy, and the influence of the stringing block diameter on strands damage and mechanisms were analyzed.Considering the contact and friction between strands, the ACCC full-scaled model was built and nonlinear dynamics finite element analysis of ACCC after passing the stringing block was carried out. The test results show that the plastic deformation and wear appeared on the strand surface after test. Adhesive wear proceeded from the initial wear region on the strand surface, and strands damage was improved with the increase of the stringing block diameter. The numerical analysis indicates that PEEQ and frictional dissipation, which were started on the bending stage of strands, decreased with the increase of the stringing block diameter. The simulation result was in good agreement with the test result. Based on the above results, the influence of the friction coefficient between strands on the strands damage was studied, and the strands damage was improved with the decrease of the friction coefficients. Synthetically consideration, the strands damage was acceptable when the stringing block diameter was 30 times of the diameter of ACCC.

关 键 词：碳纤维复合芯导线(ACCC) 股线损伤 滑车底径 接触 摩擦行为 

分 类 号：TH117.1[机械工程—机械设计及理论]