基于虚拟样机技术的风电齿轮箱动态特性研究

发布时间：2018-06-01 00:20

本文选题：风电齿轮箱 + 行星轮系　；参考：《太原理工大学》2012年硕士论文

【摘要】：能源作为社会存在和发展的坚实基础,是经济增长和社会进步的重要保证。由于常规能源造成的能源短缺和环境污染等问题日益严重,为了解决这些问题,以确保各种经济领域的正常运行,实现经济和社会可持续发展,世界各国纷纷开始调整能源结构,大力开发新能源。风能作为一种可再生、干净无污染的能源被世界各国所关注。风电齿轮箱作为风电机组的核心组成部分之一,其齿轮系统的振动、噪声等问题影响着风电机组的正常运转,因此研究风电齿轮箱的动态特性对于提高风电机组的整体寿命具有重要的意义。本文运用虚拟样机技术对1.5MW风电齿轮箱的动态特性进行分析研究,主要内容如下：确定了1.5MW风电齿轮箱的传动结构,给出了齿轮箱的各个部件设计参数,同时对关键零部件进行了强度校核。利用Pro/E建立风电齿轮箱的各个零件模型,并得到装配体。基于计算多体系统动力学理论,对多体系统动力学建模理论、计算方法和求解过程进行了讨论。在ADAMS中建立了风电齿轮箱的多体系统动力学模型。在ADAMS中建立风电齿轮箱的虚拟样机,计算并设置仿真所需要的参数；对仿真结果进行分析和讨论,并且与理论计算结果进行对比,证明了仿真结果的正确性。以风电齿轮箱中速级为对象对行星轮系进行了受力分析,将行星架和行星轮之间原有的旋转副用柔性衬套(bushing)代替,以此来模拟轴承获得更多的动态特性,得到了与理论结果相吻合的仿真结果。采用大型有限元分析软件ANSYS对齿轮箱中速级的行星轮、太阳轮、齿圈进行了柔性化处理,生成了模态中性文件(MNF),并用这些柔性化的零件代替原来的刚性体。对齿轮箱进行了刚柔耦合仿真,得到了柔性体的动态应力应变、最大应力位置、危险节点等信息。
[Abstract]:As a solid foundation of social existence and development, energy is an important guarantee of economic growth and social progress. As a result of the growing problems of energy shortages and environmental pollution caused by conventional energy, in order to address these problems in order to ensure the normal functioning of various economic fields and to achieve sustainable economic and social development, Countries around the world have begun to adjust the energy structure, vigorously develop new energy. As a kind of renewable, clean and clean energy, wind energy is concerned by all countries all over the world. As one of the core components of wind turbine, the vibration and noise of its gear system affect the normal operation of wind turbine. Therefore, it is important to study the dynamic characteristics of wind turbine gearbox to improve the whole life of wind turbine. In this paper, the dynamic characteristics of 1.5MW wind power gearbox are analyzed by virtual prototyping technology. The main contents are as follows: The transmission structure of 1.5MW wind power gearbox is determined, the design parameters of each part of the gearbox are given, and the strength of key parts is checked. Each part model of wind power gearbox is established by Pro/E, and the assembly is obtained. Based on the theory of computational multi-body system dynamics, the modeling theory, calculation method and solution process of multi-body system dynamics are discussed. The multi-body system dynamics model of wind power gearbox is established in ADAMS. The virtual prototype of wind power gearbox is built in ADAMS, the parameters needed for simulation are calculated and set, the simulation results are analyzed and discussed, and compared with the theoretical results, the correctness of the simulation results is proved. Taking the mid-speed stage of the wind power gearbox as the object, the force of the planetary gear train is analyzed, and the original rotating pair between the planetary frame and the planetary gear is replaced by flexible bushinging, so as to simulate the bearing to obtain more dynamic characteristics. The simulation results are in agreement with the theoretical results. In this paper, a large finite element analysis software (ANSYS) is used to flexible the planetary gear, solar wheel and gear ring of the gear box. The modal neutral file is generated, and the original rigid body is replaced by these flexible parts. The rigid-flexible coupling simulation of the gearbox is carried out, and the dynamic stress-strain, maximum stress position and dangerous nodes of the flexible body are obtained.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM315;TH132.41

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