文档介绍：基于Pro-e的齿轮有限元分析
摘要
目前,国内外都把齿轮传动作为主要的传动方式,因其工作可靠,寿命长,结构紧凑,传动比准确,传动效率高,速度和功率的适用范围广。但是传统的研究齿轮强度的方法比较粗略,已经难以满足发展的要求。本文用PRO-E软件建立精确的渐开线齿轮并运用ANSYS软件确定其应力等问题进行了研究,给出了渐开线齿轮的建模及分析的方法,过程和结果,为渐开线直齿轮的优化设计,计算和校核提供了方法指导。.本文基于CAD/CAE软件,针对齿轮传动做了以下几个方面的工作:
1、建立精确的三维渐开线齿轮参数化模型
应用Pro/ENGINEER软件的“参数”和“关系”等方法,并考虑实际加工情况,通过创建精确的齿根过渡曲线等方法建立了精确的齿轮参数化模型;结合Prograjn方法,实现了由同一个齿轮模型生成直齿轮、左旋斜齿轮和右旋斜齿轮功能;基于齿轮啮合原理,利用圆柱齿轮的啮合平面,实现了无干涉装配,并可获得任意的齿轮啮合状态。
2、齿轮静态弯曲有限元应力计算
对齿轮几何模型进行了结构简化和边界简化;在静态弯曲应力计算中,采用扫掠划分的方法,选择齿轮端面网格和引导线,生成六面体单元,考虑了齿轮的实际啮合接触线作为加载位置;并结合齿轮特点分析了应力结果。本文工作的完成,对提高发动机齿轮传动系统的寿命和可靠性,提高设计质量,降低设计费用,缩短开发周期,具有较好的工程实际意义。
关键词:齿轮强度,三维齿轮建模,有限元分析
Abstract
At present, domestic and foreign regarded as the main drive gear means, because of its reliable, long life, compact, and accurate transmission ratio, transmission efficiency, speed and power of the application scope. But the traditional method of gear strength is sketchy, has been difficult to meet development requirements. In this paper, PRO-E software to build accurate involute gear and the use of ANSYS software to determine the stress and other issues, gives the involute gear modeling and analysis, process and results, for the involute Optimal Design of gear, methods of calculation and verification guidance provided Based on CAD / CAE software, gear made for the following work
1, the establishment of accurate three-dimensional involute gear parametric model application of Pro / ENGINEER software, "parameters" and "relationship" and so on, and consider the actual processing conditions, by creating a precise method of tooth root transition curve parameters to establish a precise model of gear; combination Prograjn method, implemented by the same gear model generation gear, helical gear and right L-function of helical gear; gear engagement theory based on the use of gear meshing plane, to achieve interference-free assembly, and the meshing of gears available to any state.
2, gear stress analysis of the static bending
Geometric model of th