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电网技术  2010 

覆冰输电导线舞动非线性有限元分析

, PP. 214-218

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Abstract:

以考虑扭转的索单元来模拟输电导线,分别采用空间杆单元和平面梁单元模拟绝缘子串和间隔棒,利用Newmark-β法并结合Newton迭代法计算了单跨单导线、多跨单导线及分裂导线的舞动响应,分析了舞动振幅与风速的关系。研究结果表明几何非线性有限元方法比线性有限元方法得到的舞动振幅大;多跨单导线舞动振幅大于单跨单导线;分裂导线舞动振幅大于单导线振幅;单跨单导线和多跨单导线均存在某一风速使得舞动振幅达到最大,而分裂导线舞动振幅则是随着风速增大而增大。

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