REDUCED ORDER MODEL OF NONLINEAR STRUCTURES FOR TURBOMACHINERY AEROELASTICITY

被引：0
|
作者：
Flament, T. [1 ,2 ]
Deu, J-F. [2 ]
Placzek, A. [1 ]
Balmaseda, M. [3 ]
Tran, D-M. [4 ]
机构：
[1] Univ Paris Saclay, DAAA, ONERA, F-92322 Chatillon, France
[2] HESAM Univ, Cnam, LMSSC, F-75003 Paris, France
[3] Univ Paris Saclay, ONERA, DAAA, F-92190 Meudon, France
[4] Univ Paris Saclay, ONERA, DMAS, F-92322 Chatillon, France
来源：
PROCEEDINGS OF ASME TURBO EXPO 2023: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, GT2023, VOL 11B | 2023年
关键词：
Structural dynamics; vibration; geometric nonlinearity; nonlinear model order reduction; fluid-structure interaction; aeroelasticity; PROPER ORTHOGONAL MODES; PHYSICAL INTERPRETATION; REDUCTION;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This work concerns the numerical modeling of geometric nonlinear vibrations of slender structures in rotation using an original reduced order model based on the use of dual modes along with the implicit condensation method. This approach is an improvement of the classical ICE method in the sense that the membrane stretching effect is taken into account in the dynamic resolution. The dynamics equations are firstly presented and the construction of the reduced order model (ROM) is then proposed. The second part of the paper deals with numerical applications using the finite element method, first for a 3D cantilever beam, then for an Ultra High Bypass Ratio (UHBR) fan blade. In the applications considered, the proposed method predicts more accurately the geometrically nonlinear behavior than the ICE method.
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页数：10
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