基于Abaqus的舷间充水双层壳体水下声辐射计算方法验证  

Verification of Underwater Acoustic Radiation Simulation Method for Double-Shell with Contained Water Based on Software Abaqus

作　　者：吴健[1,2] 何涛 王纬波[1,2] WU Jian;HE Tao;WANG Weibo(National Key Laboratory on Ship Vibration & Noise,China Ship Scientific Research Center,Wuxi 214082,China;Jiangsu Key Laboratory of Green Ship Technology,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心船舶振动噪声重点实验室,无锡214082 [2]江苏省绿色船舶技术重点实验室,无锡214082

出　　处：《中国造船》2019年第1期175-184,共10页Shipbuilding of China

摘　　要：利用双层弹性球壳及加肋圆柱壳的算例验证Abaqus软件对带有舷间水体的水下结构声辐射计算方法。用Python语言编制了球形场点的辐射声功率计算程序,对结构振动加速度、场点声压和辐射声功率进行了比较。计算结果表明,双层球壳的场点声压与辐射声功率的解析解与Abaqus软件的计算结果吻合较好;双层加肋圆柱壳的Abaqus软件的计算结果与三维水弹性声辐射计算方法的结果存在一定的峰值频率偏移,但计算反映的趋势及曲线峰值吻合较好。在经过验证后,该方法可用于水下带舷间水体的复杂结构的声辐射评估。Based on the software Abaqus a calculation method of acoustic radiation of underwater structure with water contained inside is verified by both examples of spherical double-shell and cylindrical double ribbed shell. Acoustic radiated power in spherical sound field is calculated by the Python program. Structure vibration acceleration, field acoustic pressure and acoustic radiation power is compared. Results show that the analytical solution of acoustic pressure and radiated sound power of the spherical double-shell is in good agreement with the Abaqus. For the double cylindrical ribbed shell, the peak frequency based on Abaqus has a certain offset from that based on the software Thafts-acoustic, but the trend and the peak value of the two curves are still in good agreement. After verification, the method can be applied in the evaluation of acoustic radiation of complex underwater structure with contained water.

关 键 词：声学无限元 舷间水 声辐射 双层球壳 双层加肋圆柱壳 

分 类 号：TB532[理学—物理]