| 火箭增压管路多点随机激励试验技术研究 |
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| 引用本文： | 丁镇军,丁富海,王喆,陈贵龄,史淑娟.火箭增压管路多点随机激励试验技术研究[J].航天器环境工程,2017,34(5):500-504. |
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| 作者姓名： | 丁镇军 丁富海 王喆 陈贵龄 史淑娟 |
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| 作者单位： | 1. 北京强度环境研究所, 北京 100076;2. 北京宇航系统工程研究所, 北京 100076 |
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| 摘 要： | 文章介绍了一种改进的管路试验方法——多点随机激励试验技术。根据管路自身的特点,该方法可以更加真实地模拟管路的工作环境。通过试验获得了在不同相干和相位条件下管路动态响应的变化规律。结果表明:相位和相干都可以改变管路动态响应,这可为管路多点振动试验条件的设计或选取提供依据。
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| 关 键 词： | 增压管路 多点振动 自谱 互谱 |
| 收稿时间： | 2017/4/20 0:00:00 |
| 修稿时间： | 2017/9/13 0:00:00 |
Multi-exciter random vibration test for rocket pressurized pipeline |
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| DING Zhenjun,DING Fuhai,WANG Zhe,CHEN Guiling,SHI Shujuan.Multi-exciter random vibration test for rocket pressurized pipeline[J].Spacecraft Environment Engineering,2017,34(5):500-504. |
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| Authors: | DING Zhenjun DING Fuhai WANG Zhe CHEN Guiling SHI Shujuan |
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| Institution: | 1. Beijing Institute of Structure and Environment Engineering, Beijing 100076, China;2. Beijing Institute of Aerospace System Engineering, Beijing 100076, China |
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| Abstract: | An improved method for the pipeline environment test, the multi-dimensional vibration technique, is proposed in this paper. With the method, the working environment of the pipeline system can be more precisely simulated. The variation characteristics of the pipeline are obtained with different coherences and phases in the multi-dimensional vibration. The results indicate that both the coherence and the phase play an important role in the pipeline dynamic response. This information may serve as a reference for the simulation and the characterization of the PSD matrix during the pipeline multi-dimensional vibration test. |
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| Keywords: | pressurized pipeline multi-exciter vibration self-power spectrum cross-power spectrum |
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