Band Gaps Characteristics Analysis of Periodic Oscillator Coupled Damping Beam.

Band Gaps Characteristics Analysis of Periodic Oscillator Coupled Damping Beam.
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周期振荡器耦合阻尼梁的带隙特性分析

DOI:
10.3390/ma13245748
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发表时间:
2020-12-16
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Tang D
Tang D
中科院分区:
其他
文献类型:
--
作者:
Tang L;Yao X;Wu G;Tang D

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通过带隙设计方法对周期振子耦合阻尼梁模型进行了减振,可应用于等效工程结构。本文利用回传射线矩阵法结合Bloch定理计算了无限长周期振子耦合阻尼梁的弯曲波频散关系。采用有限元法求解了有限长周期振子耦合阻尼梁的弯曲波振动频率响应函数。在无限长周期振子耦合阻尼梁模型中,无论是解析还是数值计算结果,都出现了弯曲波振动带隙。在这些带隙中,弯曲波的传播被禁止,并且弯曲振动被显著抑制。进一步研究了结构和材料参数对弯曲波振动带隙特性的影响。因此,通过调整周期耦合阻尼梁结构和等效二维周期加筋板结构的相关参数,可以实现结构的减振设计。
The vibration of the periodic oscillator coupled damping beam model is reduced through the band gaps designing method, which can be applied in equivalent engineering structures. In this paper, the flexural wave dispersion relations of the infinite long periodic oscillator coupled damping beam were calculated using the reverberation-ray matrix method combined with the Bloch theorem. The flexural wave vibration frequency response function of the finite long periodic oscillator coupled damping beam was carried out using the finite element method. The flexural wave vibration band gaps occur in the infinite long periodic oscillator coupled damping beam model in both the analytical and numerical results. In these band gaps, flexural waves’ propagation is prohibited, and flexural vibration is significantly suppressed. Furthermore, the effects of structure and material parameters on the flexural wave vibration band gaps characteristics are studied. Thus, the structural vibration reduction design can be realized by adjusting the related parameters of the periodic coupled damping beam structures and the equivalent 2D periodic stiffened plate structures.
DOI: 10.1103/physrevb.62.2446
发表时间: 2000-07-15
期刊: PHYSICAL REVIEW B
影响因子: 3.7
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通讯作者: Page, JH
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