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Computation of bolted joint stiffness using strain energy.

机译：使用应变能计算螺栓连接的刚度。

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摘要

The joint stiffnesses of preloaded bolted connections were determined using strain energy calculations from finite element models. The strain energy method, proposed here, provides a new, more comprehensive method of interpreting results from a finite element model than methods used previously. Previous works using finite element models have approximated joint stiffness values by computing the average deflections at the bolt-head-to-member interface and dividing this into the applied load in the bolt. Other works have enforced a uniform deflection at the bolt-head-to-member interface, effectively ignoring the coupled stiffness of the bolt head and abutment. Additionally, an assessment was performed of previous research efforts on externally loaded bolted joints. Techniques in modeling, enforcement of boundary conditions, and methods for bolt preload application were assessed. Three-dimensional finite elements were used to model axisymmetric bolted joints. Bolt head geometry was modeled to account for the coupled bending stiffness at the bearing interface.
机译：使用有限元模型中的应变能计算来确定预紧螺栓连接的接头刚度。本文提出的应变能方法提供了一种比以前使用的方法更全面的新方法来解释有限元模型的结果。以前使用有限元模型进行的工作通过计算螺栓头与构件界面处的平均挠度并将其除以螺栓中的施加载荷，从而获得了近似的接头刚度值。其他工作在螺栓头与构件的界面处施加了均匀的挠度，从而有效地忽略了螺栓头与基台的耦合刚度。此外，对以前对外部受力螺栓连接的研究工作进行了评估。评估了建模技术，边界条件的实施以及螺栓预紧力施加方法。使用三维有限元对轴对称螺栓连接进行建模。对螺栓头的几何形状进行建模以考虑轴承界面处的耦合弯曲刚度。

著录项

  • 作者

    Allen, Christopher T.;

  • 作者单位

    The University of Alabama in Huntsville.;

  • 授予单位 The University of Alabama in Huntsville.;
  • 学科 Mechanical engineering.
  • 学位 M.S.E.
  • 年度 2003
  • 页码 124 p.
  • 总页数 124
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TS97-4;
  • 关键词

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