基于Abaqus和Isight的水下壳体声散射优化

Acoustic scattering optimization of underwater shell based on Abaqus and Isight

针对水下椭圆壳的声散射优化问题,以壳体声散射强度最小为优化目标,以截面特征参数为设计变量建立模型。采用有限元与无限元耦合的混合优化方法,利用Python和Abaqus二次开发求解远场声散射强度,并结合Isight对水下壳体声散射进行优化。根据优化结果改进椭圆壳截面几何参数,可有效降低其声散射强度。

As to the optimization of acoustic scattering from an underwater elliptical shell,the model is built by taking the minimum scattering intensity of shell as the optimization object,and taking section characteristic parameters as design variables.Python and Abaqus secondary development are used to solve far-field scattering intensity by the hybrid optimization method of the coupling of finite element and infinite element.The acoustic scattering of underwater shell is optimized by combing with Isight.The geometric parameters of elliptical shell section are improved based on the optimization results,and the acoustic scattering intensity is reduced effectively.