覆冰工况下电力导线非对称疲劳失效的数值模拟分析

白茹, 蔡钢, 张晓敏, 陈文骐, 蒋渝

Numerical Simulation Analysis of Asymmetric Fatigue Failure for Iced Electric Power Transmission Line

BAI Ru, CAI Gang, ZHANG Xiaomin, CHEN Wenqi, JIANG Yu

表1 导线特性参数[5]

Table 1 Characteristic parameters of power line

Parameters Value Type LGJ-630/45 H/m 2700 L/m 280 D/m 0.0338 m/kgkm-1 2079.2 E/MPa 69000 α/℃-1 11.8×10-6 Operating stress/MPa 55.2 Failure stress/MPa 221