Lamb waves analysis in high anisotropy alloys material: Propagation and infinite zero group velocity resonances

Hamdi Ezzin,Souhail Dahmen,Zhenghua Qian,Christ Glorieux,Raj Das

doi:10.1016/j.wavemoti.2023.103170

Lamb waves analysis in high anisotropy alloys material: Propagation and infinite zero group velocity resonances

Hamdi Ezzin, Souhail Dahmen + Show 3 more

https://doi.org/10.1016/j.wavemoti.2023.103170

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Journal: Wave Motion

Publication Date: May 1, 2023

Affiliation: RMIT University, Nanjing University of Aeronautics and Astronautics, KU Leuven, University of Parma, University of Sfax

#Antisymmetric Mode #Symmetric Mode + Show 8 more

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Abstract

In the present paper, the dispersion curve of guided modes in a cubic Ni–Mn–Ga thin plate is studied. Exceptional dispersion behavior is reported, with multiple crossings between antisymmetric (An) and symmetric (Sn) Lamb modes. In addition, several dispersion branches contain one or more zero group velocity (ZGV) points. The number of ZGV points per symmetric mode, Sn and per antisymmetric mode An, turns out be 3n-2.

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