Abstract
Appling Mindlin’s theory of thick plates and Hamilton system to propagation of elastic waves under free boundary condition, a solution of the problem was given. Dispersion equations of propagation mode of strip plates were deduced from eigenfunction expansion method. It was compared with the dispersion relation that was gained through solution of thick plate theory proposed by Mindlin. Based on the two kinds of theories, the dispersion curves show great difference in the region of short waves, and the cutoff frequencies are higher in Hamiltonian systems. However, the dispersion curves are almost the same in the region of long waves.
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Communicated by ZHONG Wan-xie
Project supported by the National Natural Science Foundation of China (No.10572045)
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Hu, C., Han, G., Fang, Xq. et al. Flexural wave propagation in narrow Mindlin’s plate. Appl Math Mech 27, 793–801 (2006). https://doi.org/10.1007/s10483-006-0610-y
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DOI: https://doi.org/10.1007/s10483-006-0610-y
Key words
- Mindlin’s plate
- wave propagation
- Hamilton formulism
- dispersion relation
- control of traveling wave
- extended wave and localized vibration