Abstract：A numerical model, consisting of adjacent spans and insulator strings, of a multi-span iced transmission line section is set up in ABAQUS software. The user-defined material subroutine VUMAT of ABAQUS software is developed for the introduction of porous elastic constitutive model of the ice and the deletion of pipe elements used to model the broken ice with the tensile failure criterion. A large number of de-icing scenarios are studied with variables including number of spans per line section, span length, ice porosity, ice thickness, temperature and different amplitudes of shock-loads, based on which the effects of adjacent span and insulator strings on the rate of de-icing are analyzed and discussed. It is discovered that the process of de-icing after loading is affected obviously by all the above parameters except temperature. The obtained numerical results provide a reference for the design of de-icing technique in practice.
陈科全 严波 刘小会 程皓月. 覆冰导线机械式冲击除冰模拟研究[J]. , 2012, 31(17): 129-133.
Chen Ke-quan Yan Bo LIU Xiao-hui CHENG Hao-yue. Numerical Study on Mechanical De-icing for Iced Transmission Lines. , 2012, 31(17): 129-133.
2012, Vol. 31 
