一对渐开线齿轮参数化建模与数值分析系统的研发

发布时间：2018-06-15 16:12

本文选题：ANSYS二次开发 + 渐开线齿轮　；参考：《新疆大学》2017年硕士论文

【摘要】：齿轮传动方式在工业生产和生活中应用很广。社会快速发展的同时,用户对齿轮形状、尺寸、结构提出新的要求外还对机械特性和动力特性要求也越来越高。按照实际需要设计齿轮的结构和尺寸时,考虑到齿轮结构和齿形的复杂性以及各种误差等原因,在实体建模、划分网格、边界条件的给定和数值计算等方面花费大量的人力和时间,特别是对CAD、ANSYS等工程软件不大熟悉的一般用户来说花费的时间更多。因此迫切需要对一对齿轮进行参数化建模和数值分析软件平台的搭建,进而对其实现快速建模和数值计算分析等功能。本文主要针对一对渐开线齿轮进行参数化建模和数值分析平台的搭建,然后验证其参数化建模和数值分析系统的有效性。本研究利用Visual C++编程和ANSYS软件的APDL技术,首先创建了渐开线啮合直齿圆柱齿轮的参数化建模与数值分析软件平台。通过系统性研究渐开线齿轮的关键参数和基本结构,确定了主驱动参数和副参数及其相关关系式,并根据渐开线的形成原理编程实现了齿形的准确描述和生成。通过考虑主驱动参数、渐开线形状和齿轮结构参数等,对软件系统进行了基本构架设计、基本功能设计和用户界面设计,编程实现了一对直齿圆柱齿轮的参数化建模和数值分析软件。通过ANSYS的批处理模式和外部操作方式来调用ANSYS有限元分析相关的软件模块,并通过人机界面输入一对齿轮的齿数、模数、压力角、齿顶高系数、顶隙系数等关键参数、材料属性和边界条件等实现了一对齿轮参数化建模与数值分析全过程。从而极大提高齿轮数值建模效率、缩短建模时间。主要研究内容如下:1)基于ANSYS进行二次开发,搭建能够实现一对渐开线直齿圆柱齿轮进行参数化建模、以及进行数值分析功能的平台。用Visual C++对系统的代码进行编写,实现了ANSYS软件与本参数化建模与数值分析平台之间的数据传递,解决了调用程序等接口技术方面问题,数据通讯方面的问题通过Visual Studio来解决,还能够封装APDL命令流文件。2)利用齿轮关键参数作为主驱动参数实现了参数化建模。查看机械设计手册,选择齿数、压力角、模数、齿顶高系数和齿隙系数五个关键尺寸参数作为独立参数,分度圆直径、标准中心距、齿厚等作为非独立的参数,对齿轮外形和尺寸进行限制和设计。在利用ANSYS二次开发的功能时,对参数变化时生成齿轮的APDL命令流文本进行调用。3)实现了参数化建模数据和数值分析数据的可视化处理功能。在Visual C++对ANSYS软件进行二次开发的环境中,通过结合软件自身的APDL语言,实现了一对齿轮的三维实体数据、网格数据、变形数据、应力数据、应变数据和各种动力学数据可视化并可画出相应的图形(网格划分图、变形图、应力云图等)。通过不同类型、不同大小的齿轮模型的参数化建模,验证了本参数化建模和数值分析软件系统的有效性。通过建立一对齿轮的参数化模型,然后网格划分和设定边界条件等,最后可根据实际传动情况在静力学界面和模态分析界面输入了相应的约束条件和载荷扭矩条件等边界条件,对齿轮进行了静力分析、模态分析等,分析了一对齿轮的网格划分图、变形图、应力云图和模态振型图等,进一步验证了本软件系统的有效性。
[Abstract]:The gear transmission mode is widely used in industrial production and life. At the same time of rapid social development, new requirements for the shape, size and structure of gear are also required. The requirements for the mechanical and dynamic characteristics of the gear are also higher and higher. The complexity of the gear structure and gear shape is considered when the gear structure and size are designed according to the actual needs. It takes a lot of manpower and time in solid modeling, division of grid, the given and numerical calculation of boundary conditions, especially for the general users who are not familiar with CAD, ANSYS and other engineering software. Therefore, it is urgent to make a parameterized modeling and numerical analysis software platform for a pair of gears. In this paper, the parameterized modeling and numerical analysis platform of a pair of involute gear are built, and the validity of the parameterized modeling and numerical analysis system is verified. This study first created the Visual C++ programming and the APDL technology of the ANSYS software. The parameterized modeling and numerical analysis software platform of involute spur gear has been studied. Through the systematic study of the key parameters and basic structure of involute gear, the main driving parameters and the accessory parameters and their correlation formulas are determined, and the accurate description and generation of the tooth shape are realized according to the formation principle of the involute. The main driving parameters, the shape of the involute and the parameters of the gear structure, the basic frame design, the basic function design and the user interface design are carried out for the software system. The parametric modeling and numerical analysis software of a pair of straight tooth cylindrical gears is realized by programming. The ANSYS finite element analysis is called by the batch processing mode of ANSYS and the external operation mode. Related software modules, and input a pair of gear teeth number, modulus, pressure angle, top coefficient of the tooth, top clearance coefficient and other key parameters, material properties and boundary conditions through the man-machine interface. The whole process of modeling and numerical analysis of a pair of gears is realized, which greatly improves the efficiency of the gear numerical modeling and shortens the time of modeling. The contents are as follows: 1) based on the two development of ANSYS, we build a platform for parametric modeling of a pair of involute spur gear and the function of numerical analysis. The code of the system is written with Visual C++, and the data transfer between the ANSYS software and the parameterized modeling and numerical analysis platform is realized, and the adjustment is solved. With the problems of program and other interface technology, the problem of data communication is solved by Visual Studio, and can also encapsulate the APDL command stream file.2). The key parameters of the gear are modeled as the main driving parameters. The mechanical design manual is viewed, the number of teeth, the pressure angle, the modulus, the top coefficient of the tooth and the tooth gap coefficient are five key points. As an independent parameter, the diameter of the indexing circle, the standard center distance, the tooth thickness as a non independent parameter, the size parameters are restricted and designed for the shape and size of the gear. In the use of the function of the two development of ANSYS, the APDL command flow text of the gear generated by the parameter changes is transferred to.3) to realize the parameterized modeling data and numerical analysis. According to the visual processing function, in the two development environment of Visual C++, the 3D solid data of a pair of gears, grid data, deformation data, stress data, strain data and various dynamic data are visualized and the corresponding graphics can be drawn by combining the software of the software with the software of the software itself (APDL language). By parameterized modeling of different types and different sizes of gear models, the validity of the parameterized modeling and numerical analysis software system is verified. By establishing a parameterized model of a pair of gears, and then dividing the grid and setting the boundary conditions, and finally, the static interface and the model can be used in the static interface and the model according to the actual transmission condition. The boundary conditions such as the corresponding constraint conditions and the load and torque conditions are input into the state analysis interface. The static analysis and modal analysis of the gear are carried out. The grid partition diagram, the deformation map, the stress cloud map and the modal vibration pattern are analyzed, which further verify the effectiveness of the software system.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH132.41

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