摘要
本文对仅有一档满足舞动条件的连续档输电线路的振动进行了详细地研究.利用ABAQUS通用软件建立考虑绝缘子串连续档覆冰输电线的精细有限元模型,通过用户自定义单元UEL施加空气动力载荷,获得考虑几何非线性的连续档覆冰导线大幅振动的时域解.根据数值结果研究了连续档输电导线档距及档数变化对连续档内不同档输电线舞动的影响规律,所得结果对连续档覆冰导线舞动和防舞技术的研究具有一定的参考价值.
This paper studies the vibration characteristics of continuous spans with only one galloping span. The finite element model of continuous spans is set up by means of ABAQUS softwart,and the aerodynamic load is determined by the UEL . The time domain solutions for the vibrations of the continuous spans are obtained with consideration of the non-linear influence. The effects of span and galloping amplitude are investigated, which may provide some guidance for prevention of conductor galloping.
出处
《力学与实践》
北大核心
2014年第1期37-41,共5页
Mechanics in Engineering
基金
博士点联合基金(20125522120003)
国家自然科学基金(51308570)
国家自然科学基金(51277186)资助项目
关键词
舞动
有限元
连续档
输电导线
galloping, finite element, continuous spans, transmission line conductor
