HIGH⁃FIDELITY FINITE ELEMENT SIMULATION AND EXPERIMENTAL VERIFICATION OF BOLT PRELOAD FORCE UNDER TIGHTENING TORQUE

QIAN Jin; CHEN Guo; CUN WenYuan; ZHAO XuSheng; ZHANG Xu; ZHAO ZhengDa

doi:10.16579/j.issn.1001.9669.2024.04.007

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HIGH⁃FIDELITY FINITE ELEMENT SIMULATION AND EXPERIMENTAL VERIFICATION OF BOLT PRELOAD FORCE UNDER TIGHTENING TORQUE

Experimental Research · Testing Technology | 更新时间：2024-12-26

- HIGH⁃FIDELITY FINITE ELEMENT SIMULATION AND EXPERIMENTAL VERIFICATION OF BOLT PRELOAD FORCE UNDER TIGHTENING TORQUE
- Journal of Mechanical Strength Vol. 46, Issue 4, Pages: 809-815(2024)
- 作者机构：
  
  1. 南京航空航天大学民航学院
  2. 南京航空航天大学通用航空与飞行学院
  3. 航空工业成都飞机工业（集团）有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2024.04.007
  CLC： TB121
- Published：15 August 2024，
- 稿件说明：
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QIAN JIN, CHEN GUO, CUN WENYUAN, et al. HIGH⁃FIDELITY FINITE ELEMENT SIMULATION AND EXPERIMENTAL VERIFICATION OF BOLT PRELOAD FORCE UNDER TIGHTENING TORQUE. [J]. Journal of mechanical strength , 2024, 46(4): 809-815.
DOI：

QIAN JIN, CHEN GUO, CUN WENYUAN, et al. HIGH⁃FIDELITY FINITE ELEMENT SIMULATION AND EXPERIMENTAL VERIFICATION OF BOLT PRELOAD FORCE UNDER TIGHTENING TORQUE. [J]. Journal of mechanical strength , 2024, 46(4): 809-815. DOI： 10.16579/j.issn.1001.9669.2024.04.007.

摘要

针对实际螺栓结构

研究螺栓在拧紧力矩作用下的有限元仿真方法

得出了拧紧力矩和螺栓预紧力之间的定量关系。首先

建立了带三维斜螺纹的螺栓几何模型

并且使用Hypermesh软件进行带螺纹的有限元网格划分

并定义相应的力学接触状态;然后

利用Ansys Workbench软件对螺母下表面施加不同大小拧紧力矩来得到对应的轴向力的大小

从而得出拧紧力矩与螺栓拉力之间的函数关系;最后

设计了螺栓预紧力实验

并将实验、仿真结果以及理论公式计算结果三者进行对比验证。结果表明

与扭拉关系理论计算式相比

有限元仿真模型的计算结果与实验更为接近

能准确反映螺栓预紧过程。螺栓预紧高保真有限元模型为进一步精确分析螺栓拧紧时的力学机制提供了一种可行方法。

Abstract

The finite element simulation method of bolt torsion under the tightening torque process was carried out

a quantitative relation between the tightening torque and the bolt preload was established for an actual structure.Firstly

the geometric model of the bolt with three⁃dimensional oblique thread was built

and the finite element mesh with thread was divided by using Hypermesh software

and the corresponding mechanical contact pairs were redefined.Then

Ansys Workbench software was used to apply the different sizes of tightening torque to the lower surface of the nut to obtain the magnitude of the corresponding axial force

so that the functional relation between the tightening torque and the bolt tension could be obtained.Finally

a bolt preload test was designed and the experimental

emulational and theoretical results were compared to verify the method.The results show that the results of the finite element simulation model are closer to the experimental results compared to the theoretical calculation results.The high⁃fidelity finite element model of bolt preload in this paper provides an important method for further accurate analysis of the bolt mechanics mechanism.

关键词

拧紧力矩螺栓预紧力扭拉关系高保真有限元仿真螺栓预紧力实验

Keywords

Tightening torqueBolt preloadTorsion-pull relationHigh-fidelity finite element simulationBolt preload test

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