Smolyak-Grid-Based Flutter Analysis with the Stochastic Aerodynamic Uncertainty
المؤلفون المشاركون
المصدر
Discrete Dynamics in Nature and Society
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-03-23
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
How to estimate the stochastic aerodynamic parametric uncertainty on aeroelastic stability is studied in this current work.
The aerodynamic uncertainty is more complicated than the structural one, and it takes more significant effect on the flutter boundary.
First, the nominal unsteady aerodynamic influence coefficients were calculated with the doublet lattice method.
Based on this nominal model, the stochastic uncertainty model for unsteady aerodynamic pressure coefficients was constructed with physical meaning.
Afterwards, the methodology for flutter uncertainty quantification due to aerodynamic perturbation was developed, based on the nonintrusive polynomial chaos expansion theory.
In order to enhance the computational efficiency, the integration algorithm, namely, Smolyak sparse grids, was employed to calculate the coefficients of the stochastic polynomial basis.
Finally, the flutter uncertainty analysis methodology was applied to an aircraft's wing model.
The influence of uncertainty with uniform distribution for aerodynamic pressure coefficients on flutter boundary was quantified.
The numerical results indicate that, the influence of unsteady aerodynamic pressure due to the motion of coupling modes takes significant effect on flutter boundary.
It is validated that the flutter uncertainty analysis based on Smolyak sparse grids integration is efficient and accurate for quantifying input uncertainty with high dimensions.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Dai, Yuting& Yang, Chao. 2014. Smolyak-Grid-Based Flutter Analysis with the Stochastic Aerodynamic Uncertainty. Discrete Dynamics in Nature and Society،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-451895
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Dai, Yuting& Yang, Chao. Smolyak-Grid-Based Flutter Analysis with the Stochastic Aerodynamic Uncertainty. Discrete Dynamics in Nature and Society No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-451895
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Dai, Yuting& Yang, Chao. Smolyak-Grid-Based Flutter Analysis with the Stochastic Aerodynamic Uncertainty. Discrete Dynamics in Nature and Society. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-451895
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-451895
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر