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Image of Vibration Testing and System Dynamics
ISSN: 2475-4811 (print)
ISSN: 2475-482X (online)
Journal of Vibration Testing and System Dynamics

C. Steve Suh (editor), Pawel Olejnik (editor),

Xianguo Tuo (editor)

Pawel Olejnik (editor)

Lodz University of Technology, Poland

Email: pawel.olejnik@p.lodz.pl

C. Steve Suh (editor)

Texas A&M University, USA

Email: ssuh@tamu.edu

Xiangguo Tuo (editor)

Sichuan University of Science and Engineering, China

Email: tuoxianguo@suse.edu.cn

Statics Analysis and Strength Optimization of Squirrel Cage Elastic Support Structure

Journal of Vibration Testing and System Dynamics 7(2) (2023) 141--152 | DOI:10.5890/JVTSD.2023.06.003

Jia-xi Liu$^{1}$, Zhong Luo$^{1, 2, 3}$, Lei Li$^{1}$, Kai-ning Liu$^{1}$

$^{1}$ School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, PR China

$^{2}$ Foshan Graduate School of Northeastern University, Foshan 528312, PR China

$^{3}$ Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University, Shenyang 110819, PR China

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Abstract

The critical speed of aeroengine can be adjusted by designing the support stiffness of elastic support structure. Squirrel cage elastic support structure is a common elastic support structure, so it is very important to optimize its design steps and calculate its stiffness accurately. The static characteristics of the squirrel cage elastic support structure such as stiffness and strength characteristics are analyzed, and the stiffness value, deformation and stress clouds of the structure are obtained, which are based on the finite element method. Then, the static stiffness test platform of the squirrel cage elastic support structure is built to verify the validity of the experiment from the perspective of simulation. Experimental verification shows that the experimental test values have good agreement with the simulation values, which proves the correctness of the simulation results. Finally, in order to achieve the maximum strength of the structure under the condition of specified installation space and specified stiffness value. The genetic algorithm is used to optimize the structure. The rule of the optimization result is summarized, which is verified by the theoretical analysis and simulation.

References

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