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中文摘要：
利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。利用ANSYS软件计算壳体的模态及其在流场中受点激励时的振动响应。然后结合SYSNOISE软件和AUTOSEA软件分别计算壳体在流场中声辐射效率在低频段和高频段时的频率响应。从而建立一套圆柱壳体在流场中振动声辐射效率在全频段的数值计算分析方法。
英文摘要：
Numerical analysis of vibration and sound radiation efficiency from a submerged cylindrical shell has been carried out by using FEM methods, BEM methods and statistical energy methods. The modes of shells and vibration response are calculated by ANSYS software. Then, the radiation efficiency at low frequency and frequency response at high frequency in fluid are computed respectively by both SYSNOISE software and AUTOSEA software. Thus a completely numerical compute analysis method is established in fluid about vibrational radiation efficiency at full frequency.
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