适应跨轴柔性转子用于特定的负载-变形模式
Brandon T Peterson1, Dean Chen1, Jonathan B Hopkins1
1Mechanical and Aerospace Engineering, University of California, Los Angeles, 420 Westwood Plaza, 48-121 Engineering IV, Los Angeles, CA 90095.
概括
横轴弹性轴 (x轴) 提供无摩擦轴承解决方案. 设计修改可以减轻非线性应力效应,如曲和弓绳,提高现实应用的性能.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 部落学 (tribology) 是一个学科.
背景情况:
- 横轴弹性轴 (x轴) 是有前途的无摩擦轴承,在单轴拉力负荷下适度的角度移位.
- 非线性应力效应,如叶片曲和弓弦,可以在组合负载下在x-pivots中成为关键故障模式.
研究的目的:
- 调查用于减轻x-pivots中的非线性应力效应的新型设计技术.
- 为设计耐疲劳和灾难性故障的x-pivot提供框架.
主要方法:
- 三维有限元素建模 (FEM) 用于应力分析.
- 用FEM来评估设计修改对各种负载条件下的减压的影响.
主要成果:
- 对叶片几何,旋转机制和系统集成的设计修改有效地减少了峰值应力.
- 成功演示了减轻刀片曲和弓绳的技术.
- 实现了针对特定负载和变形要求的x-pivot的性能量身定制.
结论:
- 有关设计的明智变化对于减少x-pivots的峰值应力至关重要.
- 这些发现代表了朝着在工程系统中实践实施x-pivots的重要一步.
- 优化的x-pivot设计可以提高要求高的应用程序的可靠性和寿命.
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