Maps unlock the full dynamics of targeted energy transfer via a vibro-impact nonlinear energy sink

被引:17
|
作者
Liu, Ruofeng [1 ]
Kuske, Rachel [2 ]
Yurchenko, Daniil [3 ]
机构
[1] Rice Univ, Computat Appl Math & Operat Res, Houston, TX USA
[2] Georgia Inst Technol, Sch Math, Atlanta, GA 30332 USA
[3] Univ Southampton, ISVR, Southampton, England
基金
英国工程与自然科学研究理事会;
关键词
Vibro-impact; Targeted energy transfer; Impact map; Nonlinear sink; Bifurcation; PARALLEL;
D O I
10.1016/j.ymssp.2023.110158
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
We consider a model of a vibro-impact nonlinear energy sink (VI-NES), where a ball moves within a cavity of an externally forced mass, impacting either end of the cavity. These impacts result in energy transfer from the mass to the ball, thus limiting the oscillations of the larger system. We develop a semi-analytical map-based approach, recently used for an inclined impact pair model, in the setting where there is energy transfer between the mass and the ball. With this approach we analytically derive exact expressions for the full dynamics of the VI-NES system without restricting the range of parameters, in contrast to other recent work in which an approximate reduced model is valid only for small mass of the ball, small amplitude, and a limited frequency range. We develop the bifurcation analysis for the full VI-NES system, based on exact maps between the states at successive impacts. This analysis yields parameter ranges for complex periodic responses and stability analyses for O(1) mass of the ball, forcing frequencies that are not the same as the natural frequency, and large amplitude forcing. The approach affords the flexibility to analytically study the dynamics of different periodic solutions and their stability, including a variety of impact sequences in the full two degree-of-freedom model of VI-NES. Comparisons of quantities that characterize the energy transfer point to the significance of different types of periodic behavior, which may occur for different parameter combinations. Our semi-analytical results also provide the impact phase, which plays an important role in the efficiency of the energy transfer.
引用
收藏
页数:18
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