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<p>U-bolts are widely utilized in various industrial applications for attaching rounded bars or pipes to supporting structures. Despite their conventional use and unique characteristics, there is a notable scarcity of research on the mechanical behavior of U-bolts. This paper presents an experimental technique for quantifying the strains and stresses induced in U-bolts during installation. The methodology introduced here not only provides a means of evaluating the bending-induced effects on U-bolts but also allows for an in-depth investigation of load distribution between the two connected legs of the U-bolt. Even with careful installation and alternating tightening on both ends, the preload tension imbalance between the legs of the U-bolt was measured to be as much as 20%. The findings from this research will serve as a resource for engineers, manufacturers, and other industry professionals, enhancing their understanding of U-bolt behavior and enabling more accurate design and selection of U-bolt assemblies for specific applications.</p>

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Measuring Tension Imbalance in U-Bolts During Tightening

  • 期刊论文

  • 发表日期：

    2025年4月3日

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  • Leah M. Ginsberg,
  • Joel D. Hassebrock,
  • Jacob A. Wagner,
  • Hans C. Iwand,
  • Alfred M. Pettinger

摘要

U-bolts are widely utilized in various industrial applications for attaching rounded bars or pipes to supporting structures. Despite their conventional use and unique characteristics, there is a notable scarcity of research on the mechanical behavior of U-bolts. This paper presents an experimental technique for quantifying the strains and stresses induced in U-bolts during installation. The methodology introduced here not only provides a means of evaluating the bending-induced effects on U-bolts but also allows for an in-depth investigation of load distribution between the two connected legs of the U-bolt. Even with careful installation and alternating tightening on both ends, the preload tension imbalance between the legs of the U-bolt was measured to be as much as 20%. The findings from this research will serve as a resource for engineers, manufacturers, and other industry professionals, enhancing their understanding of U-bolt behavior and enabling more accurate design and selection of U-bolt assemblies for specific applications.