神经网络与进化策略在结构优化设计中的结合

利用BP神经网络对有限元计算出的样本数据训练出一种参数映射关系，从而获得进化策略求解结构优化问题的目标函数值，进一步获得问题的优化解，5杆结构表明此方法使用较少的有限元分析次数就能有效地求出最优解。

The combination of neural network and evolution strategy to the optimum of structures

Constructed with BP neural networks,a non-linear mapping realation can be gained by training data models calculated by FEM software.In order to get the optimum solutions,then can use Evolution Strategyto do optimum design by calculating objective function values.The example of five bars truss is provided to indicate that its a better optimum solution by using less finite element analyses than using simple evolution strategy.