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双侧弹性约束悬臂梁的非光滑擦边动力学

史美娇 徐慧东 张建文

史美娇,徐慧东,张建文. 双侧弹性约束悬臂梁的非光滑擦边动力学 [J]. 应用数学和力学,2022,43(6):619-630 doi: 10.21656/1000-0887.420177
引用本文: 史美娇,徐慧东,张建文. 双侧弹性约束悬臂梁的非光滑擦边动力学 [J]. 应用数学和力学,2022,43(6):619-630 doi: 10.21656/1000-0887.420177
SHI Meijiao, XU Huidong, ZHANG Jianwen. Non-Smooth Grazing Dynamics for Cantilever Beams With Bilateral Elastic Constraints[J]. Applied Mathematics and Mechanics. doi: 10.21656/1000-0887.420177
Citation: SHI Meijiao, XU Huidong, ZHANG Jianwen. Non-Smooth Grazing Dynamics for Cantilever Beams With Bilateral Elastic Constraints[J]. Applied Mathematics and Mechanics. doi: 10.21656/1000-0887.420177

双侧弹性约束悬臂梁的非光滑擦边动力学

doi: 10.21656/1000-0887.420177
基金项目: 国家自然科学基金(11872264)
详细信息
    作者简介:

    史美娇(1996—),女,硕士生(E-mail:a2762440878@163.com)

    张建文(1962—),男,教授,博士(通讯作者. E-mail:zhangjianwen@tyut.edu.cn)

  • 中图分类号: O357.41

Non-Smooth Grazing Dynamics for Cantilever Beams With Bilateral Elastic Constraints

  • 摘要: 研究了具有双侧弹性约束的单自由度悬臂梁系统擦边诱导的非光滑动力学行为。首先,基于弹性碰撞悬臂梁的动力学方程和擦边点的定义,分析了双侧擦边周期运动的存在性条件。其次,选取零速度的Poincaré截面,推导了双侧擦边轨道附近带参数的高阶不连续映射。然后,结合光滑流映射和高阶不连续映射建立了新的复合分段范式映射。最后,将基于低阶范式映射和高阶范式映射得到的分岔图进行对比,分析验证了高阶范式映射的有效性,并通过数值仿真进一步揭示了弹性碰撞悬臂梁的擦边动力学。
  • 图  1  双侧弹性碰撞悬臂梁系统模型

    Figure  1.  The cantilever beam system under bilateral elastic impacts

    图  2  弹性碰撞悬臂梁系统 (2) 的二维相平面

    Figure  2.  The 2D phase plane of the cantilever beam system under bilateral elastic impacts (2)

    图  3  擦边点附近不连续映射 ${\boldsymbol{P}}_ {\rm{PDM1}}$${\boldsymbol{P}}_ {\rm{PDM2}}$的示意图

    Figure  3.  The schematic diagram of the discontinuity mappings ${\boldsymbol{P}}_ {\rm{PDM1}}$ and ${\boldsymbol{P}}_ {\rm{PDM2}}$near grazing points

    图  4  系统 (2) 擦边轨道附近的分岔图:(a) 基于低阶映射 (43) 得到的擦边轨道附近的分岔图;(b) 基于高阶映射 (49) 得到的擦边轨道附近的分岔图

    Figure  4.  The bifurcation diagram of system (2) near the grazing orbit: (a) the bifurcation diagram near the grazing orbit obtained based on low-order mapping (43); (b) the bifurcation diagram near the grazing orbit obtained based on high-order mapping (49)

    图  5  $ d=d_{0}+0.002\; $处的非碰撞单周期运动

    Figure  5.  The non-impact single periodic motion at $ d=d_{0}+0.002\; $

    图  6  $ d=d_{0}\; $处的双擦边周期运动

    Figure  6.  The double grazing periodic motion at $ d=d_{0}\; $

    图  7  $ d=d_{0}-0.001\; $处的 1-1-1 碰撞周期运动

    Figure  7.  The 1-1-1 impact periodic motion at $ d=d_{0}-0.001\; $

    图  8  $ d=d_{0}-0.002\; $处的 2-2-2 碰撞周期运动

    Figure  8.  The 2-2-2 impact periodic motion at $ d=d_{0}-0.002\; $

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    NORDMARK A B. Non-periodic motion caused by grazing incidence in an impact oscillator[J]. Journal of Sound and Vibration, 1991, 145(2): 279-297.
    [2] CHIN W, OTT E, NUSEE H E, et al. Grazing bifurcations in impact oscillators[J]. Physical Review E, 1994, 50(6): 4427-4444.

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出版历程
  • 收稿日期:  2021-06-28
  • 修回日期:  2021-08-13
  • 网络出版日期:  2022-05-16

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