VLGC艉管后轴承接触分析与轴承优化

Stern Tube Bearing Contact Analyses and Bearing Optimization of VLGC

为了解决艉管后轴承损坏问题,根据VLGC轴系设计,首先进行常规轴系合理校中计算,而后建立有限元模型进行轴承与轴系的接触计算;基于轴承接触状态与轴系合理校中计算数据,分析轴承与轴系的接触状态,提出艉管后轴承的优化设计方案;理论分析与实船运行状态表明,只要在静止状态下螺旋桨轴与艉管后轴承存在较小的相对倾角就可以保证艉管后轴承的正常运行。

In order to solve the problem of bearing damage after the stern tube,according to the design of the Very Large Gas Carrier(VLGC)shaft system,the rational shaft alignment calculation of the conventional shaft system is performed,and then a finite element model is established to calculate the contact between the bearing and the shaft system.Based on the bearing contact status and the rational shaft alignment calculation data,the contact state of bearing and shafting is analyzed,and the optimal design scheme of the rear bearing of stern tube is put forward.It can be concluded that the stern tube bearing can run well with the relative small angle between propeller shaft and stern tube bearing.