多级液压气的设计用于结构安全和密封分析
Qi Haonan1, Rivaldo Mersis Brilianto1, Minsu Choi1
1School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea.
Scientific reports
|April 25, 2025
概括
多级液压气的大量偏斜会导致结构问题. 这项研究优化了U环密封,以提高结构安全性,减少五级液压气的磨损,提高密封性能.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 重型机械中必不可少的多级望远镜液压气面临着结构安全挑战,例如由于大偏斜而引起的泄漏,特别是在水平应用中.
- 虽然有限元分析 (FEA) 已被用来评估气的安全性,但大曲率和密封性能之间的联系仍未得到充分研究.
研究的目的:
- 为了研究和减轻大偏差对五级液压气密封性能的影响.
- 为了比较不同类型的液压密封的有效性 (O环,矩形环,U封) 在大的偏斜条件下.
主要方法:
- 开发了一个奇点偏移方程来模拟五阶中的偏移,并根据FEA结果验证了它.
- 设计了杆眼安装以最大限度地减少偏移,并使用ANSYS Workbench进行了结构性大偏移分析.
- 在O环,矩形环和U环上进行密封性能测试,包括在循环压力和温度下进行老化测试.
主要成果:
- 与FEA结果相比,奇点偏移方程显示最大误差为14%.
- 在大偏斜下,密封件在其表面表现出不同的接触压力.
- 与O环和矩形密封件相比,U密封件显示出更高的结构安全性和更少的磨损,即使经过老化测试.
- 与原来的O环设计相比,优化的U环密封件将平均接触压力降低了8.02%.
结论:
- 建议在五级液压气中使用U-lip密封,以提高结构安全性并最大限度地减少磨损.
- 优化的U环密封件显著提高了密封性能,并在较大的屈曲条件下降低了接触压力.
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