论文部分内容阅读
研究了在内壁简谐法向线力激励下的水中弹性圆柱壳的振动和声辐射问题，这有助于深入认识水中结构的声辐射机理，验证水下结构共振声辐射理论。本文从经典Ｒａｙｌｅｉｇｈ简正级数解出发导出共振声辐射公式，然后分别用经典公式和共振声辐射公式计算钢圆柱壳的辐射声功率及壳体表面声压曲线。计算结果表明两者符合良好。
The problem of vibration and sound radiation of elastic cylindrical shells in water under simple normal linear force excitation of the inner wall is studied, which is helpful to understand the sound radiation mechanism of underwater structures in depth and verify the theory of underwater acoustic resonance radiation. In this paper, the resonant acoustic radiation formula is deduced from the classical Rayleigh simple-normal-number solution. Then, the radiated sound power of the cylindrical shell and the surface acoustic pressure curve of the shell are calculated by using the classical formula and the resonant acoustic radiation formula respectively. The results show that the two are in good agreement.