船舶尾轴架系统在设计完成后，需对其结构强度进行计算，使得在船舶航行中不发生破坏。强度计算时为达到更高的精度要求，通常可采用有限元计算方法，在误差较小的情况下，简化计算模型有助于提高计算效率。基于对尾轴与轴毂间连接方式的简化以及模拟尾轴采用单元的不同分别建立了4种模型，在对比不同设计载荷的基础上，选取了载荷及工况进行加载计算。结果表明，有限元计算中，尾轴采用梁单元模拟时，计算出的前尾轴架应力高于采用实体单元模拟，同时在建立模型时需考虑尾轴承刚度的影响以及尾轴与轴毂间的相对滑动。
After the ship shaft bracket system is designed, its structural strength needs to be calculated so that no damage occurs during the ship's navigation. In order to achieve higher precision requirements in strength calculation, finite element calculation method can usually be used. When the error is small, simplifying the calculation model can help improve calculation efficiency. Based on the simplification of the connection between the stern shaft and the hub and the difference in the unit used to simulate the stern shaft, four models were established respectively. On the basis of comparing different design loads, the loads and load cases were selected for calculation. The results show that the stress calculated by the finite element model established by using the beam element to simulate the stern shaft is higher than that by using the solid element, and the influence of the stiffness of the stern tube bearing and the relative slip between the stern shaft and the hub must be considered when establishing the model.
2023,45(24): 80-84 收稿日期：2022-12-06
DOI：10.3404/j.issn.1672-7649.2023.24.014
分类号：U611.43
作者简介：葛奥华(1999-),男,硕士研究生,研究方向为尾轴架强度计算方法
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