带襟翼导轨翼肋后缘尺寸-拓扑综合优化的摄动神经网络代理模型法OACSTPCD

The design of wing rib trailing edges with flap tracks requires the determination of sizes of the rib edge strips,the webs and the topological shapes of the rib webs.Therefore,a perturbation neural network sur-rogate model method was proposed for the size-topology synthetical optimization.The basic idea is that,based on the sensitivity of topology optimization to parameters,the perturbation is introduced in the DOE samples to capture the topological mutation points by means of the filtering measure,and reduce the numerical noise,which greatly improves the prediction accuracy of the surrogate model.With the topology optimization process viewed as a black box,the surrogate model for the size variables and topology optimized structural responses was directly built up.Finally,optimization was carried out on the surrogate model to obtain the optimal combi-nation of structural sizes and topological shapes.A typical calculation example of wing rib trailing edge optimi-zation demonstrates the validity and superiority of the proposed method.