灵感来自树的生物结构,以提高阻尼性能
Yanwen Li1, Hanwen Yang2, Marian Wiercigroch3
1State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.
ACS applied materials & interfaces
|June 23, 2023
概括
研究人员使用以树为灵感的六角表面纹理增强了磁性流体减震器 (MFSA). 这项创新提高了阻尼效率,并减少了用于航天器振动控制所需的磁流体质量.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 生物模拟学是一种生物模拟学.
背景情况:
- 磁流体减震器 (MFSA) 对于缓解灵活航天器中的微振来说至关重要.
- 提高MFSA的阻尼效率仍然是一个重大的工程挑战.
- 仿生设计为提高机械系统性能提供了新的解决方案.
研究的目的:
- 研究在MFSA上的生物表面纹理的应用,以提高阻尼效率.
- 探索3D打印用于将表面纹理集成到MFSA上的使用.
- 开发和验证一种理论模型,用于分析MF在纹理MFSA中的行为.
主要方法:
- 3D打印被用来应用生物质纹理,灵感来自树脚,到MFSAs.
- 采用边缘提取算法来修改生物质纹理,使其成为实际的六角形状.
- 开发了一种磁场-流场合动态模型,以模拟MF流并分析纹理效应.
- 进行了减振实验,以评估修改后的MFSA的阻尼性能.
主要成果:
- 表面纹理的整合,特别是六角形状,被证明在改善MFSA阻尼方面有效.
- 理论模型显示,纹理会诱导,增加磁流体的剪切率和流动阻力.
- 六角表面纹理与生物质纹理相比,显示出更好的缓冲增强.
- 拟议的六角纹理需要减少磁流体质量才能有效运行.
结论:
- 六角表面纹理代表了一种新且有效的方法来提高MFSA的阻尼效率.
- 生物仿真灵感,适应实际应用,导致显著改善的冲击吸收.
- 这项研究验证了表面纹理和理论建模的使用,以优化航天器应用中的MFSA性能.
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