Department of Mathematics, IMPACS, Aberystwyth University, Aberystwyth SY23 3BZ, UK.
Department of Mathematical Sciences, University of Liverpool, Liverpool L69 7ZL, UK.
Philos Trans A Math Phys Eng Sci. 2020 Jan 10;378(2162):20190313. doi: 10.1098/rsta.2019.0313. Epub 2019 Nov 25.
This paper presents a unified approach to the modelling of elastic solids with embedded dynamic microstructures. General dependences are derived based on Green's kernel formulations. Specifically, we consider systems consisting of a structure and continuously or discretely distributed oscillators. Several classes of connections between oscillators are studied. We examine how the microstructure affects the dispersion relations and determine the energy distribution between the master structure and microstructures, including the vibration shield phenomenon. Special attention is given to the comparative analysis of discrete and continuous distributions of the oscillators, and to the effects of non-locality and trapped vibrations. This article is part of the theme issue 'Modelling of dynamic phenomena and localization in structured media (part 2)'.
本文提出了一种统一的方法来对具有嵌入式动态微观结构的弹性固体进行建模。基于 Green 核公式推导出了一般的依赖关系。具体而言,我们考虑由结构和连续或离散分布的振荡器组成的系统。研究了振荡器之间的几种连接类型。我们研究了微观结构如何影响频散关系,并确定了主结构和微观结构之间的能量分布,包括振动屏蔽现象。特别关注对离散和连续分布的振荡器的比较分析,以及非局部性和被困振动的影响。本文是主题为“结构介质中动态现象和局域化建模(第 2 部分)”的一部分。