The continuous structure's acoustic radiation power sensitivity and acoustic optimization problems under external loading are investigated herein. Finite element method (FEM) is used to obtain the structural frequency response and boundary element method (BEM) is adopted to perform exterior acoustic radiation analysis. Combination the Taylor expansion function, the structural-acoustic power sensitivity information is applied in structural-acoustic optimization analysis. In the end, the stiffened double cylindrical shell in water is demonstrated numerically, the result show that the method is feasible and effective.%分析了外载荷下的连续结构体的声辐射功率灵敏度和声辐射优化问题.结构的频率响应采用有限元法处理,声辐射问题用边界元法来分析.结合泰勒展开式,将结构-声辐射功率灵敏度信息应用于结构-声辐射优化分析中.在数值计算中,以水中双层加肋圆柱壳结构的声辐射优化问题为例进行数值分析,验证方法的可行性和有效性.
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