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最小二乘法估算变压器绝缘件瑞利阻尼系数的可行性研究

王尚 杨振元 王威强 李福鹏

王尚, 杨振元, 王威强, 李福鹏. 最小二乘法估算变压器绝缘件瑞利阻尼系数的可行性研究[J]. 机械科学与技术, 2018, 37(7): 985-991. doi: 10.13433/j.cnki.1003-8728.20180002
引用本文: 王尚, 杨振元, 王威强, 李福鹏. 最小二乘法估算变压器绝缘件瑞利阻尼系数的可行性研究[J]. 机械科学与技术, 2018, 37(7): 985-991. doi: 10.13433/j.cnki.1003-8728.20180002
Wang Shang, Yang Zhenyuan, Wang Weiqiang, Li Fupeng. Feasibility Study on Estimating Rayleigh Damping Coefficients of Insolation used in Transforms by Least Square Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(7): 985-991. doi: 10.13433/j.cnki.1003-8728.20180002
Citation: Wang Shang, Yang Zhenyuan, Wang Weiqiang, Li Fupeng. Feasibility Study on Estimating Rayleigh Damping Coefficients of Insolation used in Transforms by Least Square Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(7): 985-991. doi: 10.13433/j.cnki.1003-8728.20180002

最小二乘法估算变压器绝缘件瑞利阻尼系数的可行性研究

doi: 10.13433/j.cnki.1003-8728.20180002
基金项目: 

国家电网科技项目(SGTYHT/14-JS-188)资助

详细信息
    作者简介:

    王尚(1994-),硕士研究生,研究方向为材料性能测试研究,1158302650@qq.com

    通讯作者:

    王威强,教授,博士,wqwang@sdu.edu.cn

Feasibility Study on Estimating Rayleigh Damping Coefficients of Insolation used in Transforms by Least Square Method

  • 摘要: 从瑞利阻尼的基本概念出发,推导了瑞利阻尼的基本表达式,提出利用最小二乘法求解构件的瑞利阻尼系数,并验证其可行性。以变压器用层压木和层压纸板为例,对二者进行锤击试验,在优势频段之内,得到其主要模态,采用前人已有的三种瑞利阻尼系数确定方法及最小二乘法分别求得二者的瑞利阻尼系数,与最为经典的方法所得值进行对比。此外,利用有限元软件ABAQUS对层压木和层压纸板进行同一边界条件、不同阻尼系数的谐响应分析。结果表明:所有方法求得的瑞利阻尼系数,构件谐响应分析中位移响应曲线的趋势几乎一致,且最小二乘法中所取模态越多,误差越小。证明利用最小二乘法求解构件的瑞利阻尼系数是可行的。
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出版历程
  • 收稿日期:  2017-05-29
  • 刊出日期:  2018-07-05

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