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首页> 外文期刊>Journal of Computational Physics >A meshless collocation method for band structure simulation of nanoscale phononic crystals based on nonlocal elasticity theory
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A meshless collocation method for band structure simulation of nanoscale phononic crystals based on nonlocal elasticity theory

机译:基于非识别弹性理论的纳米级旋流晶体带结构模拟的无网耦合方法

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In this paper, the band structures of nanoscale phononic crystals based on the nonlocal elasticity theory are calculated by using a meshfree local radial basis function collocation method (LRBFCM). The direct method is applied to enhance the stability of the derivative calculations in the LRBFCM. A simple summation in the LRBFCM is proposed to deal with the integration related to the nonlocal stresses or tractions. The LRBFCM for the band structure calculations is validated by the results obtained with the first-principle and the transfer matrix (TM) method for one-dimensional (1D) phononic crystals, as well as the comparison of the frequency responses of the two-dimensional (2D) periodic structures. (C) 2020 Elsevier Inc. All rights reserved.
机译:本文通过使用网格局部径向基函数搭配方法(LRBFCM)计算了基于非识别弹性理论的纳米级声子晶体的带结构。 应用直接方法以增强LRBFCM中衍生物计算的稳定性。 提出了LRBFCM中的简单求和,以处理与非局部应力或诉讼相关的集成。 带结构计算的LRBFCM通过用第一原理和传递矩阵(TM)方法获得的一维(1D)声子晶体获得的结果来验证,以及二维频率响应的比较 (2D)定期结构。 (c)2020 Elsevier Inc.保留所有权利。

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