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

作　　者：白瑜光[1] 脱朝智[1] 孙东科[1,2] 林家浩[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,大连116023 [2]Vestas Technology,Newport PO305WZ,UK

出　　处：《计算力学学报》2012年第4期556-560,581,共6页Chinese Journal of Computational Mechanics

基　　金：教育部高等学校全国优秀博士论文专项(2002030);国家自然科学基金(10972048;90815023;50608012)资助项目

摘　　要：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.

关 键 词：虚拟激励法 CFD 阵风响应 大气紊流 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]