Mode analysis method for the computation of guided wave dispersion in metal sheet

2018 4th International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Wen, Lichao^1 ; Zhang, Yinghong^1 ; Liu, Wenlong^1 ; Zhang, Aoshen^1

School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin

541004, China^1

关键词: Dispersion curves;    Finite element theories;    Guided wave dispersions;    Mode analysis;    Semi-analytical finite element methods;    Ultrasonic guided wave;    Wave structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/252/2/022113/pdf
DOI  :  10.1088/1755-1315/252/2/022113

来源: IOP

【 摘 要 】

Mode analysis method based on finite element theory is proposed to plot dispersion curves in metal sheet. This method is implemented by adopting COMSOL software to numerically solve and plot the dispersion curves. Compared with results obtained by semi-analytical finite element method, the calculating results are basically consistent and the modal caused by mode blending is obtained, which proves the mode analysis method is effective. Finally, the wave structure characteristics of various models are analysed, this provides a basis for the application of ultrasonic guided wave testing.