中文摘要：

研究了外载荷作用下的复合材料结构振动响应和声辐射问题。在此基础上，分析了复合材料的结构一声辐射优化设计模型，基于遗传算法进行了对称型复合材料板结构的结构一声辐射铺层几何优化分析。数值算例表明，复合材料板结构的铺层数、铺层厚度和铺层角度等参数优化，可以有效降低结构的振动和声辐射。数值算例结果验证了优化方法的有效性。

英文摘要：

The problems of composite laminated plate＇s structural vibration and acoustic radiation under external loading were investigated. The structural - acoustic optimization model of composite structure was presented. The stacking sequence problem of symmetric composite laminate and structural - acoustic radiation optimization were caried out using the genetic algorithm. The example shows that the vibration and acoustic radiation of composite laminated can be reduced by optimizing the stacking sequence parameters, such as layers number, layers thickness and layers angle. The calculation results has validited the optimized method.