180000 DWT散货船尾管后轴承斜镗型式研究

Research on Slope Types of Stern Tube Aft Bearing of a 180000 DWT Bulk Carrier

基于有限元分析建立船舶推进轴系校中计算模型。以180 000 DWT散货船为例,在相同轴承偏位的条件下,对不同的尾管后轴承斜镗型式进行了计算。通过改变尾管后轴承斜镗的斜度,分析尾管后轴承负荷、轴系弯矩和动态润滑的最低转速等计算结果与斜度的关系。为研究其他大型船舶的轴系校中计算提供了参考。

The calculation model of propulsion shaft alignment was built based on finite element analysis. Taking a 180 000 DWT bulk carrier as an example, the paper calculated different slope types of stern tube aft bearing under the condition that all the bearings had the same offset positions. The relation between slope and the calculation results from stern tube aft bearing load, shaft bending moment and minimum shaft speed ensuring hydrodynamic lubrication was analyzed by means of changing slope of stern tube aft bearing. The paper could serve as reference for shaft alignment of large-sized vessels.