中国机械工程 ›› 2025, Vol. 36 ›› Issue (11): 2509-2516.DOI: 10.3969/j.issn.1004-132X.2025.11.005

• 机械基础工程 • 上一篇    

连续可调行星齿轮超材料非线性动力学

莫帅1,2,3(), 黄轩1,2, 刘文斌1,2, 张伟1   

  1. 1.广西大学特色金属材料与组合结构全寿命安全国家重点实验室, 南宁, 530004
    2.广西大学机械工程学院, 南宁, 530004
    3.华中科技大学智能制造装备与技术全国重点实验室, 武汉, 430074
  • 收稿日期:2024-11-03 出版日期:2025-11-25 发布日期:2025-12-09
  • 通讯作者: 莫帅
  • 作者简介:莫帅*(通信作者),男,1987年生,教授、博士研究生导师。研究方向为齿轮超材料。E-mail:moshuai2010@163.com
  • 基金资助:
    国家自然科学基金(52265004);广西科技重大专项(桂科AA23073019);广西科技重大专项(桂科AA24263074);极端服役性能精准制造全国重点实验室开放课题(Kfkt2023?06);智能制造装备与技术全国重点实验室开放课题(IMETKF2025021);中国航空发动机集团科技创新平台项目(CXPT?2023?044)

Nonlinear Dynamics of Continuously Tunable Planetary Gear Metamaterial

Shuai MO1,2,3(), Xuan HUANG1,2, Wenbin LIU1,2, Wei ZHANG1   

  1. 1.State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures,Guangxi University,Nanning,530004
    2.School of Mechanical Engineering,Guangxi University,Nanning,530004
    3.State Key Laboratory of Intelligent Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan,430074
  • Received:2024-11-03 Online:2025-11-25 Published:2025-12-09
  • Contact: Shuai MO

摘要:

设计了一种基于行星齿轮的连续稳态可调力学超材料。研究了超材料优异的力学可调特性,表明所设计的超材料具有广泛的可编程刚度和显著可调的带隙,分析了可调性与结构参数的配置关系;建立行星齿轮超材料的刚柔耦合非线性动力学模型,通过数值模拟研究行星齿轮超材料在动态调节过程中的动力学特性,探讨耦合激励下系统动力学参数对其分岔特性和稳定性的影响,揭示系统振动响应在耦合参数平面上的分布特征;最后使用改进的非迭代胞映射方法来分析系统的振动响应对初始条件的依赖性。研究结果表明,行星齿轮超材料具有广泛的刚度可调谐性和显著可变的带隙间隔,在内外激励作用下系统表现出丰富的动力学特性,柔性结构的动力特性主要受结构参数的影响,刚性齿轮的动力学特性受多组耦合参数和初始条件的影响。

关键词: 力学超材料, 行星齿轮, 非线性动力学, 吸引域

Abstract:

A continuous steady-state metamaterial with tunable mechanics was designed based on planetary gears. The excellent tunable mechanics properties of metamaterials were studied, which showed the designed metamaterials had a wide range of programmable stiffness and a significantly tunning band gap. The configuration relationship between tunability and structural parameters was analyzed. Then, a rigid-flexible coupling nonlinear dynamics model of planetary gear metamaterials was established and the dynamics characteristics of planetary gear metamaterials were explored by numerical simulation in the processes of dynamic tunning. Moreover, the influences of the system dynamic parameters on the bifurcation characteristics and stability were explored under coupling excitations, and the distribution characteristics of the system vibration response with the coupling parameter plane were disclosed. Finally, an improved non-iterative cell mapping method was used to analyze the dependence of the vibration response of the system on the initial conditions. The results show that the planetary gear metamaterials have a wide range of stiffness tunability and significantly variable band gap interval. Under the influences of internal and external excitations, the system exhibits various dynamics characteristics. The dynamics characteristics of flexible construction are mainly affected by structural parameters, and the dynamics characteristics of rigid construction are affected by multiple sets of coupling parameters and initial conditions.

Key words: mechanics metamaterial, planetary gear, nonlinear dynamics, attractive domain

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