摘要
基于ABAQUS二次开发的子程序USDFLD,定义了覆冰脱落加速度判定准则,对覆冰的诱发脱落进行了有限元模拟。针对一种爆破除冰方法,模拟计算了除冰时,导线端部脱冰以及导线中部脱冰工况下的导线跳跃的高度和导线脱冰率。结果发现:利用爆破载荷作用时间短(20μs左右)的特性,能够有效抑制一般重冰区的覆冰诱发脱落,使脱冰区域、脱冰量能够人为控制,从而结合工程设置需要使导线的脱冰跳跃响应处于安全范围。模拟方法及结论可为爆破除冰的应用提供设计依据。
The secondary development subroutine USDFLD of ABAQUS was used to define the criterion of ice shedding acceleration, and the finite element simulation of ice shedding was realized. For a blasting de-icing method, the deicing rate was induced by the wire and the jumping height of the wire under different deicing conditions were simulated. The results show:the blasting load action time is short (20 μs), which can effectively inhibit the ice induced shedding in the general heavy ice area, and make the de-icing area more accurate, so that the de-icing jump response of the wire can be within the safe range in combination with the setting of different de-icing conditions. The simulation method and conclusion can provide the design basis for the application of blasting de-icing.
作者
史淋升
孙华东
曹咏弘
李海涛
谢东升
SHI Linsheng;SUN Huadong;CAO Yonghong;LI Haitao;XIE Dongsheng(School of Science, North University of China, Taiyuan 030051, China;State Grid Shanxi Economic Research Insitute, Taiyuan 030000, China)
出处
《兵器装备工程学报》
CAS
北大核心
2019年第10期211-215,228,共6页
Journal of Ordnance Equipment Engineering
基金
国网山西省电力公司科技项目(520533170007)
关键词
诱发脱冰
爆破除冰
脱冰跳跃
有限元
ice-shedding induce effect
blasting deice
ice shedding
finite element
