Abstract
The purpose of this investigation was to explore the influence of the biomimetic surface morphology on the modal properties of gear. Firstly, a involute cylinder gear model had been created, and the biomimetic surface morphology had been established on the gear tooth flanks. Secondly, the modal analysis of the ordinary gear and biomimetic gear has been investigated separately through FEM method. Results showed that the maximum amplitudes and the ten natural frequencies of biomimetic gear were obviously lower than that of the ordinary gear, but the modal shape of the two kinds of gears were almost the same. The biomimetic surface morphology could improve the dynamic characteristics and reliability of gear in the future.
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