DYNAMIC ANALYSIS OF THE GEAR-BOX CASE STRUCTURE BASED ON STIFFNESS COUPLING AND ITS LIFE ESTIMATION OF VIBRATION FATIGUE

GAO Na; FENG HuiHua; YANG ShiQiu; HUANG YongXuan

doi:10.16579/j.issn.1001.9669.2017.01.038

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DYNAMIC ANALYSIS OF THE GEAR-BOX CASE STRUCTURE BASED ON STIFFNESS COUPLING AND ITS LIFE ESTIMATION OF VIBRATION FATIGUE

更新时间：2022-09-22

- DYNAMIC ANALYSIS OF THE GEAR-BOX CASE STRUCTURE BASED ON STIFFNESS COUPLING AND ITS LIFE ESTIMATION OF VIBRATION FATIGUE
- Journal of Mechanical Strength Vol. 39, Issue 1, Pages: 221-225(2017)
- 作者机构：
  
  1. 北京理工大学机械与车辆学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.01.038
  CLC：
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GAO Na, FENG HuiHua, YANG ShiQiu, et al. DYNAMIC ANALYSIS OF THE GEAR-BOX CASE STRUCTURE BASED ON STIFFNESS COUPLING AND ITS LIFE ESTIMATION OF VIBRATION FATIGUE. [J]. 39(1):221-225(2017)
DOI：

GAO Na, FENG HuiHua, YANG ShiQiu, et al. DYNAMIC ANALYSIS OF THE GEAR-BOX CASE STRUCTURE BASED ON STIFFNESS COUPLING AND ITS LIFE ESTIMATION OF VIBRATION FATIGUE. [J]. 39(1):221-225(2017) DOI： 10.16579/j.issn.1001.9669.2017.01.038.

摘要

研究某车用手动变速器箱体与轴系刚度耦合下的结构响应和疲劳状况。首先建立变速器箱体有限元模型并通过模态试验进行了校核。然后基于ROMAX软件建立了考虑齿轮、轴系及变速器箱体柔性的变速器结构动力学耦合分析模型,通过对不同档位工况下的运转进行了精确计算得到了各轴承处的激励频谱曲线。在此基础上,对不同档位下发动机最大扭矩时箱体的耦合模型进行了动响应计算,获得了危险区域应力幅值的分布情况。最后采用振动疲劳样本法对变速器箱体危险区域的疲劳寿命进行了计算与分析。

Abstract

This paper is mainly focused on the dynamical response and the structural fatigue situation of a manual gear-box case,which is based on the stiffness coupling with the effect of the gears. First of all,the FEM model was established and the accurate model was acquired by comparing the simulation results with the experiment results. Then,we established the coupling analysis model of structure dynamics considering on parts of gears,shafts as well as the structural flexible case,using the Romax software. The working processes under different gears were simulated accurately by the model and the bearing loads of the gearbox were obtained. Then we loaded the frequency bearing load on the FEM model and obtained the stress response of the danger area. Finally,the vibration fatigue life on the danger area of the gear-box case was calculated and analyzed by the sample assessment method.

关键词

变速器频域激励振动疲劳寿命

Keywords

Gear-boxFrequency domain incentiveVibration fatigueLife

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