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电磁超声螺栓轴向应力测量的有限元分析与试验

刘恒, 陈兵, 邱菲菲, 朱忠尹, 苟国庆

刘恒, 陈兵, 邱菲菲, 朱忠尹, 苟国庆. 电磁超声螺栓轴向应力测量的有限元分析与试验[J]. 无损检测, 2021, 43(12): 12-16. DOI: 10.11973/wsjc202112003
引用本文: 刘恒, 陈兵, 邱菲菲, 朱忠尹, 苟国庆. 电磁超声螺栓轴向应力测量的有限元分析与试验[J]. 无损检测, 2021, 43(12): 12-16. DOI: 10.11973/wsjc202112003
LIU Heng, CHEN Bing, QIU Feifei, ZHU Zhongyin, GOU Guoqing. Finite element analysis and experiment of electromagnetic ultrasonic bolt axial stress measurement[J]. Nondestructive Testing, 2021, 43(12): 12-16. DOI: 10.11973/wsjc202112003
Citation: LIU Heng, CHEN Bing, QIU Feifei, ZHU Zhongyin, GOU Guoqing. Finite element analysis and experiment of electromagnetic ultrasonic bolt axial stress measurement[J]. Nondestructive Testing, 2021, 43(12): 12-16. DOI: 10.11973/wsjc202112003

电磁超声螺栓轴向应力测量的有限元分析与试验

基金项目: 

2020成都市国际合作基金资助项目(2020-GH02-00058-HZ)

详细信息
    作者简介:

    刘恒(1997-),男,硕士研究生,主要研究方向为电磁超声无损检测

    通讯作者:

    苟国庆, E-mail:gouguoqing1001@163.com

  • 中图分类号: TG115.28

Finite element analysis and experiment of electromagnetic ultrasonic bolt axial stress measurement

  • 摘要: 目前电磁超声在测厚、无损检测等领域得到了广泛的研究,但在螺栓轴向应力测量方面的研究较少,为了促进电磁超声在螺栓轴向应力测量中的应用,通过建立多物理场有限元仿真模拟了电磁超声的激发、传播过程。建立螺栓二维模型,利用电磁超声激发超声波得到了纵波在螺栓内部传播的信号;通过有限元模拟,得到了螺栓在轴向载荷作用下内部的应力分布。有限元计算表明轴向载荷和声时差存在一定的线性关系,该线性关系受到轴向载荷的影响;不同的夹紧长度会影响材料的应力系数,而夹紧长度和应力系数的乘积为定值。试验结果表明,有限元模拟结果与真实试验情况均表现为在轴向应力作用下,超声波传播时间增大,并和轴向应力呈良好的线性关系。
    Abstract: At present, electromagnetic ultrasound has been widely studied in the fields of thickness measurement and nondestructive testing, but there is little research on bolt axial force measurement. In order to promote the application of electromagnetic ultrasound in bolt axial force measurement, in this paper, the process of electromagnetic ultrasonic excitation and propagation is simulated by establishing multi-physical field finite element method. Create a two dimensional bolt model, the signal of longitudinal wave propagation inside the bolt is obtained by electromagnetic ultrasound, and the stress distribution inside the bolt under axial load is obtained by finite element simulation. The finite element calculation shows that there is a certain linear relationship between axial load and acoustic time difference, and the linear relationship is affected by axial load. Different clamping length will affect the stress coefficient of the material, and the product of the tightening length and the stress coefficient is a fixed value.The test results show that both the finite element simulation results and the real test conditions show that under the action of axial stress, the ultrasonic propagation time increases, and a good linear relationship is presented with the axial stress.
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  • 被引次数: 0
出版历程
  • 收稿日期:  2021-09-09
  • 刊出日期:  2021-12-09

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