对用于同步辐射的镜系统的振动稳定性的研究
Lan Lan1,2, Nan Wang3, WanQian Zhu1,3
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
The Review of scientific instruments
|January 12, 2024
概括
这项研究通过有限元分析和实验量化了镜子杆系统的振动. 关键发现包括自然频率和冷却水对角振动的影响,为系统稳定提供了洞察力.
科学领域:
- 机械工程 机械工程
- 振动分析 振动分析
- 结构动力学 结构动力学
背景情况:
- 镜系统是各种光学和精密工程应用中的关键组件.
- 了解和减轻振动响应对于保持系统稳定性和性能至关重要.
- 现有的文献往往缺乏对影响振动特征的特定结构元素的详细分析.
研究的目的:
- 准确预测和量化镜系统的振动响应特征.
- 研究结构部件,特别是垂直支杆对自然频率的影响.
- 为了评估冷却水注入和流量对角振动的影响.
主要方法:
- 用有限元 (FE) 模拟来建模镜系统.
- 进行实验模式分析以验证模拟结果.
- 在冷却水注入前后测量振动响应.
- 在不同的冷却水流速下分析了角振动.
主要成果:
- 滚角振动的基本频率被确定为24.66赫兹.
- 调角振动的基本频率被确定为116.21 Hz.
- 对于前六个自然频率,实验和模拟结果之间的总误差在11.15%以内.
- 垂直支杆被确定为限制结构刚性和自然频率的关键因素.
- 在冷却水注入后,角振动从123.63nrad增加到199.04nrad.
- 将冷却水流量从1升增加到1.5升/分钟,对角振动的影响最小.
结论:
- 这项研究成功地预测和量化了镜系统的振动特征.
- 垂直支杆的刚度对系统的自然频率产生重大影响.
- 冷却水注入显然会影响角振动,这表明潜在的热或流体结构相互作用.
- 这些发现为提高镜像系统的稳定性和性能提供了宝贵的指导.
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