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Exact Solution of Stress and Radial Displacement of Elastic Tapered Interference Fit

机译：弹性锥形过盈配合应力和径向位移的精确解

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Tapered interference fits, which can transfer large torques, are widely used in the connection design for propeller hubs and shafts of large vessels. In this paper, a model was developed to study the influences of torques, rotational speeds and tapers on the tapered interference fit between a propeller hub and a shaft. Using the classic elastic plane stress theory, the exact solutions of the radial stresses, tangential stresses and radial displacements of the propeller hub and shaft are derived. Then the calculation method of the magnitude of the tapered interference fit was presented. Finally taking a screw propeller system as an example, the above solutions were calculated using the numerical method. The results show that improving the stress distribution of the propeller hub is an effective approach to increase the connection strength and torque transmission capacity. If the rotation speed has to be considered, the stress and displacement would be increased significantly due to the centrifugal force. The present analytical solutions are expected to be useful in the structure design of tapered interference fits for propeller hubs and shafts.
机译：锥形干涉配合可以转移大扭矩，广泛用于大容器的螺旋桨轮毂和轴的连接设计中。在本文中，开发了一种模型，用于研究扭矩，转速和锥度对螺旋桨毂和轴之间的锥形过盈配合的影响。使用经典弹性平面应力理论，推导出辐射应力，切向应力和螺旋桨毂和轴的径向位移的精确解决方案。然后，提出了锥形过盈配合的幅度的计算方法。最后采用螺旋桨系统作为示例，使用数值方法计算上述溶液。结果表明，提高螺旋桨枢纽的应力分布是提高连接强度和扭矩传递能力的有效方法。如果必须考虑旋转速度，由于离心力，应力和位移将显着增加。预计本发明的分析解决方案将用于螺旋桨毂和轴的锥形干涉配合的结构设计。

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