Post-buckling dynamics of spherical shells

Post-buckling dynamics of spherical shells
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球壳的后屈曲动力学

DOI:
10.1098/rspa.2021.0378
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发表时间:
2021
期刊:
Proceedings of the Royal Society A
影响因子:
--
通讯作者:
G. Coupier
G. Coupier
中科院分区:
--
文献类型:
--
作者:
M. Mokbel;Adel Djellouli;C. Quilliet;S. Aland;G. Coupier

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我们通过实验和三维轴对称模拟,探讨了在屈曲状态附近浸入流体中的球壳的内在动力学。该结果得到了理论模型的支持,该模型准确地将屈曲壳描述为仅两个变量的振荡器。我们量化的有效“软化”的壳以上的屈曲阈值,在最近的实验中观察到封装微泡和声波之间的相互作用。在邻近的流体中的主要耗散机制也被证明。
We explore the intrinsic dynamics of spherical shells immersed in a fluid in the vicinity of their buckled state, through experiments and three-dimensional axisymmetric simulations. The results are supported by a theoretical model that accurately describes the buckled shell as a two-variable-only oscillator. We quantify the effective ‘softening’ of shells above the buckling threshold, as observed in recent experiments on interactions between encapsulated microbubbles and acoustic waves. The main dissipation mechanism in the neighbouring fluid is also evidenced.
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影响因子: 3.4
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