| 赵怀耘,田光明,钟继根.两点激励振动试验时结构模态对控制效果的影响分析[J].装备环境工程,2012,9(6):51-53,112. ZHAO Huai-yun,TIAN Guang-ming,ZHONG Ji-gen.Influence of Specimen′ s Modal Characteristics on Control Effect of Two-exciter Vibration Test[J].Equipment Environmental Engineering,2012,9(6):51-53,112. |
| 两点激励振动试验时结构模态对控制效果的影响分析 |
| Influence of Specimen′ s Modal Characteristics on Control Effect of Two-exciter Vibration Test |
| 投稿时间：2012-07-24 修订日期：2012-12-15 |
| DOI： |
| 中文关键词: 两点激励振动试验 控制 模态 有限元 |
| 英文关键词:two-exciter vibration test control modal finite element |
| 基金项目:国防科工局技术基础科研项目 （H112012A002）；中物院实验室装备技术基础项目 （11J102） |
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| 中文摘要: |
| 飞机外挂等细长体试件的两点激励振动试验方法在国内外已经开始较广泛应用。因试件动力学的复杂特性经常造成两点激励振动试验控制超差甚至无法控制， 因此在试验前有必要对试件开展模态等动力学特性分析。针对某模拟外挂的试验件及试验夹具开展了有限元模态分析， 在两点激励试验前对试验中容易出现控制超差的危险频率点进行了预判。随后开展的两点激励振动试验结果证明了预判的正确性以及试验前开展动力学分析的必要性。 |
| 英文摘要: |
| Two-exciter vibration testing method has been widely used for slender specimens such as aircraft store. Due to the complicated dynamic characteristics of the specimens, two-exciter vibration test is difficult to control or the vibration control overshoot will occurred. So it is necessary to do modal analysis before two-exciter vibration test. The critical frequency points in the vibration testing control were prejudged based on modal analysis of the specimen. The results of two-exciter vibration test showed that prejudgments of critical frequency points are exact. |
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