利用虚拟激励法结合CFD技术进行复合材料机翼的阵风响应分析

Gust response analysis of the composite wing with pseudo excitation method and CFD

利用随机振动高效算法-虚拟激励法结合CFD技术,分析复合材料机翼模型的大气紊流响应。计算过程中的虚拟激励法和CFD方法均应用自主产权软件平台DDJ-W。虚拟激励法的使用显著提高了计算效率,同时CFD技术的引入可以准确地确定结构的气动参数。利用Dryden模型得到大气紊流频谱激励下机翼的功率谱响应和方差。计算过程表明,虚拟激励法结合CFD技术可以准确高效地进行复合材料机翼的阵风响应分析。

The wind-gust response analysis of a composite wing in Turbulent flow was performed using the PEM （pseudo excitation method） and CFD technique,which were implemented based on the self-de- veloped structural analysis program DDJ-W. The use of the PEM improves the computational efficiency considerably and the selection of CFD technique can obtain the aerodynamic parameters accurately. The power spectral responses and variances of the wing were computed using the Dryden atmospheric turbu- lence spectrum. The computation process shows that the suggested method is accurate and highly-effi- cient for the analysis of wind-gust responses of composite wings.