TY - JOUR
T1 - 发动机机匣弧面不规则管路的布局参数多目标优化设计
AU - Liu, Wei
AU - Zhu, Hongyan
AU - Zhao, Yujie
AU - Yue, Zhufeng
N1 - Publisher Copyright:
© 2021, Editorial Department of Journal of Aerospace Power. All right reserved.
PY - 2021/1
Y1 - 2021/1
N2 - Optimization design of pipeline layout is an important means to reduce the vibration stress of engine pipeline. The multi-objective optimization design process and method for the layout parameters of the irregular pipeline were proposed. Based on the U-shaped pipeline with curved surface of engine case, a parameterized modeling method of an irregular pipeline with complex layout was established. The sensitivities of layout parameters to the dangerous natural frequencies and multi-point excitation response of the pipeline, such as the resonance frequencies, the maximum displacement and stress amplitude under multi-point excitation, were analyzed. In view of the constraints of multi-frequency and vibration responses, the method of multi-objective genetic algorithm was adopted to realize the optimal design of layout parameters of irregular pipeline. The results showed that the optimization of layouts was effective, two forbidden bands of dangerous natural frequencies were staggered. Under the same excitation, the maximum displacement amplitude of pipeline structure decreased about 35%, and the maximum stress amplitude decreased nearly 50%. It can provide a reference for the vibration controlling and dynamic forward design system of engine pipeline.
AB - Optimization design of pipeline layout is an important means to reduce the vibration stress of engine pipeline. The multi-objective optimization design process and method for the layout parameters of the irregular pipeline were proposed. Based on the U-shaped pipeline with curved surface of engine case, a parameterized modeling method of an irregular pipeline with complex layout was established. The sensitivities of layout parameters to the dangerous natural frequencies and multi-point excitation response of the pipeline, such as the resonance frequencies, the maximum displacement and stress amplitude under multi-point excitation, were analyzed. In view of the constraints of multi-frequency and vibration responses, the method of multi-objective genetic algorithm was adopted to realize the optimal design of layout parameters of irregular pipeline. The results showed that the optimization of layouts was effective, two forbidden bands of dangerous natural frequencies were staggered. Under the same excitation, the maximum displacement amplitude of pipeline structure decreased about 35%, and the maximum stress amplitude decreased nearly 50%. It can provide a reference for the vibration controlling and dynamic forward design system of engine pipeline.
KW - Engine pipeline
KW - Layout parameters
KW - Multi-frequency constraints
KW - Multi-point excitation
KW - Sensitivity
KW - Vibration controlling
UR - http://www.scopus.com/inward/record.url?scp=85101374477&partnerID=8YFLogxK
U2 - 10.13224/j.cnki.jasp.2021.01.017
DO - 10.13224/j.cnki.jasp.2021.01.017
M3 - 文章
AN - SCOPUS:85101374477
SN - 1000-8055
VL - 36
SP - 148
EP - 156
JO - Hangkong Dongli Xuebao/Journal of Aerospace Power
JF - Hangkong Dongli Xuebao/Journal of Aerospace Power
IS - 1
ER -