一个创新的检查一个悬臂光束暴露于主要参数激发的创新检查
Galal M Moatimid1, T S Amer2, Mona A A Mohamed1
1Department of Mathematics, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
Scientific reports
|November 18, 2025
概括
一个新的非线性反法有效地减轻了使用非扰动方法 (NPA) 的悬臂光束振动. 该方法为工程结构中的非线性参数问题提供了精确,用户友好的解决方案.
科学领域:
- 机械工程 机械工程
- 非线性动力学是一种非线性动力学.
- 结构分析 结构分析
背景情况:
- 在桥梁,飞机机翼和微电子机械系统 (MEMS) 等结构中,悬臂梁的参数刺激至关重要.
- 这些系统中的非线性可能会限制性能,并使振动缓解复杂化.
研究的目的:
- 开发一种简单的非线性反定律,以减少受到参数刺激的横向光束中的第一模式振动.
- 为分析非线性振荡器提供传统扰动方法的替代方案.
主要方法:
- 使用非扰动方法 (NPA),基于He的频率公式 (HFF).
- 将弱非线性振荡器转换为线性振荡器以获得不受限制的近似解决方案.
- 在合系统中扩展了大幅度非线性波动的方法.
- 使用Mathematica软件 (MS) 验证结果.
主要成果:
- 开发的非线性反定律成功地减少了悬臂光束的振动.
- 该NPA表现出与原始方程有很好的一致性,并提供了高的数值精度.
- 发现系统稳定性随着阻尼系数的增加而增加,但随着激发力参数的增加而下降.
结论:
- NPA是解决非线性参数问题的合适,用户友好和数学高效的方法.
- 该研究通过稳定性分析,Poincaré地图,相位图和分叉分析,全面了解系统的行为.
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