| 基于试验场实测应变的车辆下摆臂疲劳寿命分 |
| |
| 引用本文： | 刘献栋,曾小芳,单颖春.基于试验场实测应变的车辆下摆臂疲劳寿命分[J].农业机械学报,2009,40(5):34-38. |
| |
| 作者姓名： | 刘献栋 曾小芳 单颖春 |
| |
| 作者单位： | 北京航空航天大学交通科学与工程学院,北京,100191 |
| |
| 摘 要： | 在海南汽车试验场强化路面环境下对某轿车下摆臂应变模拟控制点的应变进行测定,得到其应变时间历程,并进行了频谱分析.讨论了在动态环境下准静态方法的使用条件.结合有限元静力分析结果通过准静态法获得危险点的应力时间历程,利用名义应力法对下摆臂疲劳寿命进行了计算和分析.在此基础上,研究了应变模拟控制点的选取、平均应力修正算法对计算结果的影响,所得结论有助于应变模拟控制点的合理选取,并对提高疲劳寿命估算的准确度有参考价值.
|
| 关 键 词： | 车辆 下摆臂 准静态法 疲劳寿命 |
Life Analysis of Vehicles Lower Suspension Arm Based on Strain Signal Measured in Proving Ground |
| |
| Liu Xiandong,Zeng Xiaofang,Shan Yingchun.Life Analysis of Vehicles Lower Suspension Arm Based on Strain Signal Measured in Proving Ground[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(5):34-38. |
| |
| Authors: | Liu Xiandong Zeng Xiaofang Shan Yingchun |
| |
| Institution: | School of Transportation Science & Engineering;Beihang University;Beijing 100191;China |
| |
| Abstract: | The strain time history of the strain simulation control point in the lower suspension arm was measured when the car was driven on the intensified road in Hainan automobile proving ground.Then the frequency analysis was done,and the service conditions for quasi-static method were also discussed.Combining finite element static analysis result,the stress time history of the critical location was gained by quasi-static method.Fatigue life of lower suspension arm was evaluated by the nominal stress method.Based... |
| |
| Keywords: | Vehicles Lower suspension arm Quasi-static method Fatigue life |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业机械学报》浏览原始摘要信息 |
| 点击此处可从《农业机械学报》下载免费的PDF全文 |
