Abstract: The paper realized Optimization design of cylindrical shells under multi-excitations based on discrete variables in ANSYS. In the premise of not changing structure parameter, adopted APDL language to program, location and phase of three simple harmonic excitations was designed variable, distance of excitations was restrict term, and shell radial of average square root velocity was objective function. Three layer optimized project was designed, then the most excellent design in location and phase of multi-excitations which minimized vibration of shell was achieved. The results showed optimized design was effective, which can provide new approach of controlling vibration in underwater great aircraft.

摘要： 应用ANSYS软件进行单层圆柱壳基于离散变量的动态性能优化设计。采用APDL语言参数化编程，在不改变结构参数前提下，以三个简谐激励力的位置、相位为设计变量，激励力之间的距离为约束条件，壳体径向均方根速度为目标函数，设计了三层优化方案，最终得到使壳体总振动最小时的多个激励力位置、相位的最优设计。结果表明该优化设计有效，可为水下大型航行器的振动控制提供参考。

关键词: 振动与波, 多点激励, ANSYS, 圆柱壳, 均方根速度, 优化设计