关键词: 声子晶体, 四元, 带隙, 填充率, 结构体积百分比

Abstract:

Based on the phononic crystals research status and basic theory, the influences of filling ratio and structure proportion of scatter cell on the first band gaps border frequency and width were investigated by the lump mass method. It is shown that the structure exists the band gaps at low frequency. As filling ratio increasing, the frequency band gap border moves to the direction of low frequency and the band gap width increases. The change of structure proportion of the scatter cell has great influence on the band gaps border frequency and width. The results provide basis and effective method of vibration band gap for the researches of phononic crystals.

Key words: phononic crystal, quaternary, band gap, filling ratio, structure proportion