基于参数化的船舶轴系回旋振动和轴系稳定性研究

发布时间：2018-07-05 09:43

本文选题：船舶推进轴系 + 参数化　；参考：《华中科技大学》2014年硕士论文

【摘要】：船舶推进轴系是船舶动力系统中重要的一部分，它位于螺旋桨和主机减速齿轮箱输出法兰之间，其主要功能是将发动机发出的功率传递给螺旋桨，而螺旋桨旋转会产生轴向推力，这部分轴向推力会传递给推力轴承进而传递给船体从而推进船舶前进或后退。推进轴系运行时会承受螺旋桨水动力、主机激励力等多种复杂载荷，因而不可避免的产生扭转、纵向、回旋振动，轴系振动是影响轴系稳定性的一个重要因素，而轴系稳定性好坏决定着船舶是否能安全稳定运行。因此，船舶推进轴系研究的理论意义与工程应用价值非常明显。本文对影响轴系稳定性的回旋振动和扭转振动特性进行研究，开发了基于参数化的船舶轴系回旋振动和轴系稳定性的计算软件，主要内容包括：在分析推进轴系回旋振动和扭转振动原理基础上，给出了计算模型和计算方法，研究并提取了基于参数化的轴系几何参数、材料属性与载荷等特征参数，实现了基于参数化的轴系快速建模。在此基础上基于Visual Studio2008平台C++语言设计了轴系稳定性计算软件，只需输入轴系特征参数即可自动完成参数的传递和驱动，基于所开发平台即可实现对回旋振动的相关计算，同时以批处理方式调用ANSYS软件在后台完成扭转振动计算并可查看、分析结果。轴系稳定性计算软件平台具有友好的人机交互界面，，操作简单方便，实现了参数化建模、振动特性的相关计算，且大大减少了轴系设计时的工作量，具有较高的实用价值。
[Abstract]:Marine propulsion shafting is an important part of ship power system. It lies between the propeller and the output flange of the main engine deceleration gear box. Its main function is to transfer the power from the engine to the propeller. The propeller rotation produces axial thrust, which is transmitted to the thrust bearing and then to the hull to propel the ship forward or backward. Propulsion shafting will bear many complicated loads, such as propeller hydrodynamic force, main engine excitation force and so on. Thus, torsion, longitudinal vibration, rotary vibration and shafting vibration are important factors that affect the stability of shafting. The stability of shafting determines whether the ship can run safely and stably. Therefore, the theoretical significance and engineering application value of ship propulsion shafting research are very obvious. In this paper, the characteristics of gyratory vibration and torsional vibration affecting the stability of shafting are studied, and the calculation software of the gyro-vibration and shafting stability of ship shafting based on parameterization is developed. The main contents are as follows: on the basis of analyzing the principle of rotary vibration and torsional vibration of propeller shafting, the calculation model and calculation method are given, and the geometric parameters of shaft system based on parameterization are studied and extracted. The fast modeling of shafting based on parameterization is realized by the characteristic parameters such as material properties and loads. On this basis, based on Visual Studio 2008 platform C language, the system stability calculation software is designed. The transmission and drive of shafting parameters can be completed automatically by inputting the characteristic parameters of shafting system. Based on the developed platform, the calculation of cyclotron vibration can be realized. At the same time, the calculation of torsional vibration can be completed by calling ANSYS software in the background by batch processing, and the results can be viewed and analyzed. The software platform of shafting stability calculation has friendly man-machine interface, simple and convenient operation, realizes parameterized modeling and calculation of vibration characteristics, and greatly reduces the workload of shafting design. It is of high practical value.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U664.21

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