不确定性优化方法及应用

Uncertainty Optimization Method and Application

对不确定性优化方法进行研究并应用。建立悬臂梁结构优化模型和火箭发动机喷管型面优化模型,分别进行确定性优化与不确定性优化。优化过程中对悬臂梁结构采用蒙特卡洛仿真方法,对火箭发动机喷管型面进行了响应面近似。优化结果显示:不确定性优化确实得到了更加可行的设计结果。

Uncertainty optimization method is studied and applied on two different models in this paper. The cantilever beam structure optimization model and rocket engine nozzle contour optimization model are established for deterministic optimization and uncertainty optimization. Monte carlo simulation method is used in the process of the cantilever beam structure uncertainty optimization. And surface response approximation is used in the process of the nozzle contour uncertainty optimization. Optimization results show that more feasible design results are obtained through uncertainty optimization method.