Experimental observations of nonlinear vibration localization in a cyclic chain of weakly coupled nonlinear oscillators
Experimental observations of nonlinear vibration localization in a cyclic chain of weakly coupled nonlinear oscillators
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DOI：
10.1016/j.jsv.2021.115952
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发表时间：
2021-04
影响因子：
4.7
通讯作者：
B. Niedergesäß;A. Papangelo;A. Grolet;A. Vizzaccaro;F. Fontanela;L. Salles;A. Sievers;N. Hoffmann
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文献类型：
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作者：
B. Niedergesäß;A. Papangelo;A. Grolet;A. Vizzaccaro;F. Fontanela;L. Salles;A. Sievers;N. Hoffmann
报道了具有间隙非线性的弱耦合振子循环链非线性振动局部化的实验结果。数值模拟和分析补充了实验研究。导出了一个降阶模型，并基于谐波平衡法进行了数值分析，证明了存在多类稳定的空间局域非线性振动态。实验结果与数值计算结果吻合得很好。研究结果表明，振动局部化由于根本上的非线性效应也可能出现在机械结构与工程相关。
Experimental results on nonlinear vibration localization in a cyclic chain of weakly coupled oscillators with clearance nonlinearity are reported. Numerical modelling and analysis complements the experimental study. A reduced order model is derived and numerical analysis based on the harmonic balance method demonstrates the existence of multiple classes of stable spatially localized nonlinear vibration states. The experiments agree very well with the numerical results. The findings suggest that vibration localization due to fundamentally nonlinear effects may also arise in mechanical structures with relevance in engineering.