基于非线性声弹性效应的输电铁塔螺栓预紧力预测数值分析

doi:10.11930/j.issn.1004-9649.202009013

中国电力 ›› 2021, Vol. 54 ›› Issue (10): 152-160.DOI: 10.11930/j.issn.1004-9649.202009013

• 国家“十三五”智能电网重大专项专栏：（五）电力传感技术及应用专栏 • 上一篇下一篇

基于非线性声弹性效应的输电铁塔螺栓预紧力预测数值分析

张武能¹, 兰光宇², 汪毅³, 张留斌¹, 吴克华¹, 王晓晨^1,4

1. 河南九域恩湃电力技术有限公司，河南郑州 450000;
2. 国网河南省电力公司，河南郑州 450000;
3. 国网河南省电力公司电力科学研究院，河南郑州 450000;
4. 西北工业大学航空学院，陕西西安 710072

收稿日期:2020-09-03 修回日期:2020-12-24 出版日期:2021-10-05 发布日期:2021-10-16
作者简介:张武能(1980-),男,高级工程师,从事电力设备健康监测及评定研究,E-mail:120305267@qq.com;汪毅(1959-),男,通信作者,高级工程师(教授级),从事电力设备健康监测及评定研究,E-mail:wang_yi_henan@163.com
基金资助:
国家自然科学基金资助项目(12002280)

Numerical Analysis of Bolt Preload of Transmission Towers Based on Nonlinear Acoustoelasticity Effect

ZHANG Wuneng¹, LAN Guangyu², WANG Yi³, ZHANG Liubin¹, WU Kehua¹, WANG Xiaochen^1,4

1. Henan Jiuyu Enpai Power Technology Co., Ltd., Zhengzhou 450000, China;
2. State Grid Henan Electric Power Company, Zhengzhou 450000, China;
3. Electric Power Research Institute, State Grid Henan Electric Power Company, Zhengzhou 450000, China;
4. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

Received:2020-09-03 Revised:2020-12-24 Online:2021-10-05 Published:2021-10-16
Supported by:
This work is supported by National Natural Science Foundation of China (No.12002280)

摘要/Abstract

摘要： 基于发展输电铁塔螺栓结构健康监测技术的现实需求，利用非线性声弹性效应，建立了输电铁塔螺栓的有限元模型，并发展了一种基于多物理场耦合的数值迭代算法。首先，考虑输电铁塔螺栓的几何构形特征，建立了预紧力作用下螺栓结构的轴对称二维有限元模型，并考虑预紧力作用下超声纵波的非线性声弹性效应，采用考虑三阶声弹性效应的默纳汉超弹性材料，实现螺栓结构的应力-应变场和声场的耦合求解分析，并进行了试验验证。计算结果表明：预紧力和夹持长度对螺栓结构内部的应力场分布状态有着显著的影响，同时预紧力导致的波速变化和螺栓形变对超声纵波的渡越时间有着双重影响。所建模型和分析方法为基于非线性声弹性效应的螺栓预紧力测量技术提供了数值模拟分析平台，可为相关试验研究和仪器研制工作提供技术指导。

关键词: 非线性声弹性效应, 输电铁塔, 螺栓预紧力, 超弹性材料, 纵波, 有限元数值分析

Abstract: Based on the practical needs for developing the structural health monitoring technologies of transmission tower bolted structures, a finite element model of transmission tower bolt is established based on the nonlinear acoustoelastic effect, and a multi-physics coupling numerical iterative algorithm is proposed. Firstly, based on the geometric configuration characteristics of the transmission tower bolts, a two-dimensional axis-symmetric finite element model is established. and then the Murnaghan hyperelastic material that considers the third-order acoustoelastic effect is used to realize the coupling solution analysis of the stress-strain field and the acoustic field of the bolt. Finally, the proposed numerical model and the iteration method is validated through experiment. The results show that the preload and the clamping length have a significant effect on the stress field distribution within the bolt structure, and the wave velocity variation and bolt deformation caused by the bolt preload have a dual impact on the time of flight of the ultrasonic longitudinal wave. The model and numerical method proposed in this paper can provide a numerical simulation platform for bolt preload measurement based on the nonlinear acoustoelastic effect, and can also provide a technical guidance for related experimental research and instrument development.

Key words: nonlinear acoustoelastic effect, transmission tower, bolt preload, hyperelastic material, longitudinal wave, finite element numerical analysis

张武能, 兰光宇, 汪毅, 张留斌, 吴克华, 王晓晨. 基于非线性声弹性效应的输电铁塔螺栓预紧力预测数值分析[J]. 中国电力, 2021, 54(10): 152-160.

ZHANG Wuneng, LAN Guangyu, WANG Yi, ZHANG Liubin, WU Kehua, WANG Xiaochen. Numerical Analysis of Bolt Preload of Transmission Towers Based on Nonlinear Acoustoelasticity Effect[J]. Electric Power, 2021, 54(10): 152-160.

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基于非线性声弹性效应的输电铁塔螺栓预紧力预测数值分析

Numerical Analysis of Bolt Preload of Transmission Towers Based on Nonlinear Acoustoelasticity Effect

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基于非线性声弹性效应的输电铁塔螺栓预紧力预测数值分析

Numerical Analysis of Bolt Preload of Transmission Towers Based on Nonlinear Acoustoelasticity Effect

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