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Wave Finite Elements For Low And Mid-frequency Description Of Coupled Structures With Damage

机译：耦合损伤结构中低频描述的波动有限元

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摘要

This paper focuses on wave propagation in complex elastic structures along with a precise account of guided waves. A numerical finite element based approach named wave finite element (WFE) is further developed. Diffusion matrix prediction model (DMM) through a full numerical scheme is proposed and extended. The applicability of the WFE for the low and mid-frequency description of coupled systems is considered. Analysis of coupled structures through a notch is also treated numerically and the numerical experiments given prove the interest of the WFE for structural wave studies such as damage detection through euided waves.
机译：本文着重研究复杂弹性结构中的波传播以及对导波的精确描述。进一步发展了一种基于数字有限元的方法，称为波有限元（WFE）。提出并扩展了通过全数值格式的扩散矩阵预测模型（DMM）。考虑了WFE在耦合系统的低频和中频描述中的适用性。还对通过槽口进行的耦合结构的分析进行了数值处理，并且给出的数值实验证明WFE对于结构波研究（例如通过引流波的损伤检测）的兴趣。

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