为研究某型多管火炮的振动特性，在其几何模型基础上，提出了该型火炮模态分析方法，确定了试验点。基于SC310W多通道数据采集系统，组建了该型火炮的模态分析系统，利用锤击法对该系统进行了模态试验，获得了冲击激励力与振动加速度响应信号与频谱及其频率响应函数。利用稳态图法，获得了前7阶系统的振型及各阶振动频率，并给出了模态分析的置信因子。
Abstract
For researching vibration characteristics of a certain type multibarrel cannon, a modal analy?sis method was proposed and the experimental points were determined on the basis of its geometric model. Themode analysis system of the cannon was set up on basis of SC310W multi-path data-col?lecting system. Modal experiment of the system was carried out by a nammer hitting method, the re?sponse signals and spectra of impacting prompt power and vibration acceleration and their frequency re?sponse functions were obtained. The first seven-order modes and the corresponding vibration frequen?cies were obtained, confidence factors of modal analysis and complexity of the modal were given, by the steady map method.
关键词
机械学 /
多管 /
火炮 /
模态分析 /
振动测试
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Key words
mechanics /
multi barrel cannon /
mode analysis /
vibration test
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参考文献
[1] 刘习军，贾启芬.工程振动理论与测试技术[M].北京:高等教 育出版社，2004.
LIU Xi-jun，JIA Qi-fen. Engineering vibration theory and test technology [ M ]. Beijing： Higher Education Press, 2004. (in Chinese)
[2] 单丽君，孙改焕，关天民，等.环板式针摆行星減速器箱体的模 态分析[J] 2007, 20(1):27-28.
SHAN Li-jun, SUN Gai-huan, GUAN Tian-min，et al. Modal analysis of cylinder block of ring-plate-type pin-cycloidal gear re- ducer[ J ] . Mechanical Research and Application, 2007，20(1〉： 27 - 28. (in Chinese)
[3] 吴三灵.实用振动实验技术[M].北京:兵器工业出版社， 1993.
WU San-ling. Practical vibration experimental technology [ M]. Beying: fhe Publishing House ot Oranance Industry, 1993. (in Chinese)
[4] Wardonr H, Steven L，Bohr S.模态分析理论与试验[M].北 京:北京理工大学出版社，2001.
Wardour H，Steven L, Bohr S. Mode analysis theory and experi?ment [M] .Beijing： Beijing Institute of Technology Press, 2001.(in Chinese)
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脚注
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