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Explosion vibration mitigation of meta-plate with mass–spring metastructures
Extreme Mechanics Letters ( IF 4.3 ) Pub Date : 2020-11-21 , DOI: 10.1016/j.eml.2020.101108
Huguang He , Hualin Fan

Metastructures can effectively control the propagation path of the stress wave or attenuate its propagation strength. Usually only the flexural wave propagation​ attenuation of plates was concerned. In this research, a dynamic meta-plate theory was proposed to investigate the explosion vibration attenuation effect of plate-like metastructures. Adopting an equivalent assumption to consider the interaction between the plate and the resonator, three coupled equations of motions are built to cover the dynamic analysis through mode superposition method. With meta-cells, the meta-plate is capable of efficiently attenuate the explosion vibration, which is consistently revealed by the theoretical and numerical investigations. The influences of the natural frequency of the meta-plate, the position and natural frequency of the resonator and the duration of the blast load were investigated to instruct optimal design of meta-plate with the best explosion vibration attenuation efficiency.



中文翻译:

具有质量弹簧亚结构的超薄板的爆炸振动缓解

元结构可以有效地控制应力波的传播路径或减弱其传播强度。通常只考虑板的弯曲波传播衰减。在这项研究中,提出了一种动态超板理论来研究板状结构的爆炸振动衰减效应。采用等效假设考虑板与谐振器之间的相互作用,建立了三个耦合的运动方程,以涵盖通过模式叠加法进行的动力学分析。对于元电池,元板能够有效地衰减爆炸振动,这在理论和数值研究中一直得到揭示。元板固有频率的影响,

更新日期:2020-12-04
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