关于加速器位置对复杂结构动态和特征的影响的见解
Adam Takeshita1, Jonah Madrid1, Ezekiel Granillo1
1Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA.
Sensors (Basel, Switzerland)
|December 23, 2023
概括
加速度计的位置对复杂的系统动态有重大影响. 本研究分析了可拆卸元件 (RC) 上不同传感器位置如何影响其振动频率,模式形状和线性/非线性响应,为准确的系统分析揭示了关键的见解.
科学领域:
- 机械工程 机械工程
- 振动分析 振动分析
- 系统动力学系统动力学
背景情况:
- 了解复杂的动态系统是一个挑战.
- 加速度计用于测量系统动态,但位置各不相同.
- 可拆卸组件 (RC) 是用于研究的简化而复杂的结构.
研究的目的:
- 调查加速度计位置对RC的动态特征的影响.
- 为了比较有限元分析 (FEA) 和不同加速度计位置的实验结果.
- 分析加速度计位置对线性和非线性振动响应的影响.
主要方法:
- 对RC上三个常见的加速度计位置进行了有限元分析 (FEA).
- 进行了自由振动实验,以测量每个位置的频率和阻尼.
- 随机振动实验被用来研究在不同激发水平下的线性和非线性反应.
主要成果:
- 加速度计的位置显著影响RC的自然频率和模式形状.
- 实验结果显示,根据加速度计的位置,频率和减噪的变化.
- 激发水平,加速度计位置和响应轴之间的相互作用影响线性和非线性系统行为.
结论:
- 加速度计的位置是准确描述系统动态的一个关键因素.
- 非线性软化和减缓行为可能会出现,这是由于加速计位置,激发方向和响应轴的相互作用.
- 标准化加速度计的位置对于复杂系统分析中可靠和可比的结果至关重要.
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