| 超高斯随机振动环境的疲劳强化机理 |
| |
| 引用本文： | 蒋培,张春华,陈循,温熙森.超高斯随机振动环境的疲劳强化机理[J].国防科技大学学报,2004,26(3):99-102. |
| |
| 作者姓名： | 蒋培 张春华 陈循 温熙森 |
| |
| 作者单位： | 国防科技大学机电工程与自动化学院,湖南,长沙,410073 |
| |
| 摘 要： | 针对可靠性强化试验的全轴随机振动环境的超高斯幅值分布特性开展其疲劳强化机理研究。首先通过理论分析表明RS机振动激励下试件应力仍保持超高斯分布,然后证明了同等量级下的超高斯分布比高斯分布随机应力具有更高的疲劳强化效能,从而揭示RS机全轴随机振动环境超高斯幅值分布特性的疲劳强化机理。
|
| 关 键 词： | 可靠性强化试验 疲劳损伤 随机应力 功率谱 |
| 文章编号： | 1001-2486(2004)03-0099-04 |
| 收稿时间： | 2003/12/16 0:00:00 |
| 修稿时间： | 2003年12月16 |
Fatigue Enhancement Mechanism of the Super-Gaussian Random Vibration Environment |
| |
| JIANG Pei,ZHANG Chunhu,CHEN Xun and WEN Xisen.Fatigue Enhancement Mechanism of the Super-Gaussian Random Vibration Environment[J].Journal of National University of Defense Technology,2004,26(3):99-102. |
| |
| Authors: | JIANG Pei ZHANG Chunhu CHEN Xun and WEN Xisen |
| |
| Institution: | College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073,China;College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073,China;College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073,China;College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073,China |
| |
| Abstract: | This paper studies the fatigue enhancement mechanism of the super-Gaussian amplitude distribution characteristic. At first it is demonstrated that the response stresses amplitude distribution is super-Gaussian in the repetitive shock machine. Then it is proved that the super-Gaussian random stressed have higher efficiency to stimulate fatigue failure than Gaussian random stresses of the equivalent lever. Finally the fatigue enhancement mechanism of super-Gaussian amplitude distribution characteristic is illustrated. |
| |
| Keywords: | reliability enhancement testing fatigue damage random stresses power spectral density |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《国防科技大学学报》浏览原始摘要信息 |
| 点击此处可从《国防科技大学学报》下载免费的PDF全文 |
|
