基于DIC的风电机组施必牢螺纹副承载分布试验及响因素分析

doi:doi:10.19912/j.0254-0096.tynxb.2024-0702

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基于DIC的风电机组施必牢螺纹副承载分布试验及响因素分析

更新时间：2025-10-22

- 基于DIC的风电机组施必牢螺纹副承载分布试验及响因素分析
- Vol. 46, Issue 9, Pages: 17-25(2025)
- 作者机构：
- 作者简介：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-0702
  CLC： TH12
- Published Online：14 October 2025，
  
  Published：2025
- 稿件说明：
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[J]. 2025, 46(9): 17-25.
DOI：

[J]. 2025, 46(9): 17-25. DOI： doi:10.19912/j.0254-0096.tynxb.2024-0702.

摘要

基于数字图像相关法（DIC）提出施必牢螺纹副承载分布试验方法

并应用该方法研究标准螺纹副和施必牢螺纹副的载荷分布;依据施必牢螺纹副结构几何特征建立2D有限元模型

并与试验结果对比验证模型的准确性

分析螺纹楔形角、螺距和弹性模量对施必牢螺纹副的承载分布的影响规律。结果表明

DIC试验方法能够识别施必牢螺纹副载荷分布特征

从试验角度验证施必牢螺纹副的作用效果;标准螺纹副试验承载比例数值与解析方法最大误差仅为4.82%

施必牢螺纹副试验承载分布结果与有限元模型结果最大误差为5.23%;楔形角为30°时

承载最为均匀;轴向外载荷对承载比例影响较小;承载越均匀与螺距呈反比

与螺栓/螺母弹性模量比值呈正比。

Abstract

An experimental method based on digital image correlation （DIC） for load distribution of Spiralock thread pairs is proposed

and the method is applied to study the load distribution of standard threaded pairs and Spiralock thread pairs. A 2D finite element model is developed based on the geometrical characteristics of the Spiralock thread pair and the accuracy is validated by the experimental results. Finally

the influence of thread wedge angle

pitch and modulus of elasticity on the load distribution of the Spiralock thread pair is analyzed. The results show that the DIC experimental method can identify the load distribution characteristics of Spiralock thread pair and verify the effect of Spiralock thread pair from the experimental perspective. The maximum error between the standard threaded pair experimental load ratio values and the analytical method is only 4.82%. The maximum error between the results of the experiment load distribution of the Spiralock thread pair and the results of the finite element model is 5.23%. The most uniform loading is achieved with a wedge angle of 30°. The axis load has little effect on the load carrying ratio. Load uniformity is inversely proportional to the pitch and directly proportional to the elastic modulus ratio of the bolt to the nut.

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references

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