船用重载斜齿轮啮合过程接触有限元仿真分析

应用3-D建模软件UG和有限元分析软件ANSYS建立某大型船用减速器斜齿轮多齿啮合的三维有限元非线性接触分析模型。通过接触仿真分析轮齿的变形、综合应力、齿根弯曲应力和齿面接触应力等参数。仿真结果与赫兹理论计算结果相比，说明有限元接触法具有较高的计算精度以及处理复杂边界条件的特点，可为斜齿轮的设计提供可靠的分析手段。     

螺旋桨轴和衬套过盈联接应力数值分析研究

应用弹性力学理论和ANSYS有限元法求解螺旋桨轴和衬套过盈联接的接触应力,分别得到轴和衬套的应力分布状况.研究表明：衬套的综合应力远大于螺旋桨轴的综合应力;轴和衬套的综合应力随着衬套外径的增加而增大;有限元法考虑了轴和衬套两端的边缘效应,其求解的应力值略大于弹性力学理论方法计算结果,更接近实际情况.     

船舶尾轴可控式机械密封变工况性能试验研究

围绕研究变工况机械密封端面的热力学特性以及密封能力这一目标,进行船舶尾轴可控式机械密封模拟试验台架的设计,包括对密封试验台、介质加压装置、密封环端面温度测试系统、摩擦转矩测试系统、泄漏量测试系统和弹簧比压测试系统等装置的研制.并通过模拟试验,得到在不同工况下,转速、弹簧比压、介质压力对机械密封的端面温度、泄漏量、摩擦转矩的影响规律.     

船舶推进轴的推力轴承特性分析

Thrust bearing is a key component of the propulsion system of a ship. It transfers the propulsive forces from the propeller to the ship’s hull, allowing the propeller to push the ship ahead. The performance of a thrust bearing pad is critical. When the thrust bearing becomes damaged, it can cause the ship to lose power and can also affect its operational safety. For this paper, the distribution of the pressure field of a thrust pad was calculated with numerical method, applying Reynolds equation. Thrust bearing properties for loads were analyzed, given variations in outlet thickness of the pad and variations between the load and the slope of the pad. It was noticed that the distribution of pressure was uneven. As a result, increases of both the outlet thickness and the slope coefficient of the pad were able to improve load bearing capability.