| 导弹支撑座连接螺栓松动故障诊断的实验研究 |
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| 引用本文： | 董广明,陈进,雷宣扬,宁佐贵,王东升,王雄祥. 导弹支撑座连接螺栓松动故障诊断的实验研究[J]. 振动、测试与诊断, 2005, 25(3): 174-178 |
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| 作者姓名： | 董广明 陈进 雷宣扬 宁佐贵 王东升 王雄祥 |
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| 作者单位： | 1. 上海交通大学振动、冲击、噪声国家重点实验室,上海,200240
2. 中国工程物理研究院结构力学研究所,绵阳,621900 |
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| 基金项目： | 国家自然科学基金资助项目(编号:10176014)，国家自然科学基金重点资助项目(编号:50335030) |
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| 摘 要： | 针对某导弹支撑座在环境激励下易引发连接螺栓松动这一具体问题,在支撑座模型结构的宽带随机振动实验的基础上,探讨了实验中的问题,根据支撑座连接螺栓在不同预紧力情况下的结构稳态响应信号,分析了信号功率谱特征的差异,提出了相应的谱矩松动故障特征的提取方法。分析结果表明,谱矩因子的降低作为该结构连接螺栓松动的诊断特征是可行的。
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| 关 键 词： | 宽带随机振动实验 导弹支撑座结构 螺栓松动 功率谱 谱矩 |
| 收稿时间： | 2004-12-24 |
| 修稿时间： | 2005-03-18 |
Study on Diagnosing Attachment Bolt Looseness in Missile Clamping Support |
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| Dong Guangming,Chen Jin,Lei Xuanyang,Ning Zuogui,Wang Dongsheng,Wang Xiongxiang. Study on Diagnosing Attachment Bolt Looseness in Missile Clamping Support[J]. Journal of Vibration,Measurement & Diagnosis, 2005, 25(3): 174-178 |
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| Authors: | Dong Guangming Chen Jin Lei Xuanyang Ning Zuogui Wang Dongsheng Wang Xiongxiang |
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| Affiliation: | Dong Guangming~1 Chen Jin~1 Lei Xuanyang~1 Ning Zuogui~2 Wang Dongsheng~2 Wang Xiongxiang~2 |
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| Abstract: | The environmental-excitation-induced attachment bolt looseness in clamping support of missile is common.Based on the broad-band random vibration test on a clamping support model in missiles,this paper investigates the problems in the test.Different structural steady response signals are obtained by varying the pretightening force of the attachment bolts in the structure.The power spectrum density(PSD) diagrams of signals corresponding to different status of the structure are analyzed and the spectral moment loose fault feature extraction method is put forward.The result shows the method is feasible. |
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| Keywords: | broad-band random vibration test clamping support in missile bolt looseness PSD spectral moment |
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