Vibration Band Gap Characteristics of Two-Dimensional Periodic Double-Wall Grillages.

Vibration Band Gap Characteristics of Two-Dimensional Periodic Double-Wall Grillages.
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二维周期双壁格栅的振动带隙特性

DOI:
10.3390/ma14237174
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发表时间:
2021-11-25
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Tang L
Tang L
中科院分区:
其他
文献类型:
--
作者:
Wang C;Yao X;Wu G;Tang L

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本文采用波动有限元法(WFEM)计算了二维周期性双壁格架(DwGs)的带隙特性,并通过格架模型振动测量实验和有限元计算进行了验证。为了获得周期性双光子晶体的带隙特性,根据晶格和能带理论建立了有限元计算模型,并基于Bloch定理求解了给定波矢条件下周期性单胞的特征方程。然后,获得了有限长度制造和有限元模型的频率传递函数,以验证周期性DwG的带隙特性。最后分析了材料参数和结构形式对带隙特性和传递函数的影响,可为工程结构减振降噪设计提供参考。
In this article, the wave finite element method (WFEM) is used to calculate the band gap characteristics of two-dimensional (2D) periodic double-wall grillages (DwGs), which are verified by the grillage model vibration measurement experiment and finite element calculation. To obtain the band gap characteristics of periodic DwGs, the finite element calculation model is established according to the lattice and energy band theory and the characteristic equation of the periodic unit cell under the given wave vector condition is solved based on Bloch theorem. Then, the frequency transfer functions of finite-length manufactured and finite element models are obtained to verify the band gap characteristics of periodic DwGs. Finally, the effects of material parameters and structural forms on band gap characteristics and transfer functions are analyzed, which can provide a reference for engineering structure vibration and noise reduction design.
DOI: 10.1016/j.compstruct.2017.03.092
发表时间: 2017-07-15
影响因子: 6.3
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