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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference vol.2: Computer Technology; 20050717-21; Denver,CO(US) >COMPUTATION OF BOLTED JOINT STIFFNESS USING STRAIN ENERGY
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COMPUTATION OF BOLTED JOINT STIFFNESS USING STRAIN ENERGY

机译：用应变能计算锚固节点的刚度

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摘要

The joint stiffness 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 for interpreting results from finite element models 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. 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. The strain energy method was verified by comparison with previously published results. Results indicate that the strain energy method represents a simple and accurate method for calculating joint stiffness values.
机译：通过使用有限元模型中的应变能计算确定了预紧螺栓连接的接头刚度。这里提出的应变能方法比以前使用的方法提供了一种新的，更全面的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。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。通过与先前发表的结果进行比较，验证了应变能方法。结果表明，应变能方法代表了一种计算接头刚度值的简单而准确的方法。

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