Improved Nonlinear Analysis of a Propeller Blade Based on Hyper-Reduction

被引：12
|
作者：
Kim, Yongse [1 ]
Kang, Seung-Hoon [2 ]
Cho, Haeseong [3 ]
Shin, SangJoon [4 ]
机构：
[1] Seoul Natl Univ, Active Aeroelastic & Rotorcraft Lab, Sch Mech & Aerosp Engn, Seoul 08826, South Korea
[2] Seoul Natl Univ, Dept Aerosp Engn, 1 Gwanak Ro, Seoul 08826, South Korea
[3] Jeonbuk Natl Univ, Dept Aerosp Engn, Future Air Mobil Res Ctr, 567 Baekje Daero, Jeonju 54896, Jeollabuk Do, South Korea
[4] Seoul Natl Univ, Dept Mech & Aerosp Engn, Inst Adv Aerosp Technol, 1 Gwanak Ro, Seoul 08826, South Korea
来源：
AIAA JOURNAL | 2022年 / 60卷 / 03期
关键词：
MODEL ORDER REDUCTION; EMPIRICAL INTERPOLATION; DEIM; POD; SIMULATION; PROJECTION;
D O I：
10.2514/1.J060742
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In this study, an improved nonlinear-analysis framework capable of predicting geometric nonlinearity and high-speed rotation in rotating structures was developed. A nonlinear time-transient simulation requires large computations owing to an iterative solution algorithm. To reduce the anticipated computational cost, a proper orthogonal decomposition (POD)-based reduced-order modeling (ROM) combined with hyper-reduction is applied. To efficiently perform computations during the online stage, three hyper-reduction techniques were employed to approximate the nonlinear finite-element matrices: discrete empirical interpolation method (DEIM), Gauss-Newton with approximated tensors (GNAT), and energy-conserving sampling and weighting (ECSW). The present frameworks are applied to the time-transient simulation of a propeller, including parametric variations. Compared with the DEIM method, the GNAT and ECSW methods exhibited better enhancement of the accuracy and robustness of the reduced-order representation. Additionally, the computational efficiency of the ECSW method was improved significantly compared with that of other POD-based ROM approaches.
引用
收藏
页码：1909 / 1922
页数：14
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