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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (12): 31030.doi: 10.7527/S1000-6893.2024.31030

• Reviews •    

Influence of assembly geometric and physical properties of aircraft composite structure on service performance

Feiyan GUO1(), Qun YAN2, Yongliang ZHANG3, Qingdong XIAO4, Jinkang SHI1, Zhongqi WANG5   

  1. 1.School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China
    2.Shenyang Aircraft Design Institute,Shenyang 110035,China
    3.AVIC Shenyang Aircraft Industrial (Group) Co. ?,Ltd. ,Shenyang 110850,China
    4.AVIC Manufacturing Technology Institute,Beijing 100024,China
    5.School of Mechanical Engineering,Northwestern Polytechnical University,Xi’an 710072,China
  • Received:2024-08-01 Revised:2024-09-18 Accepted:2024-10-27 Online:2025-02-13 Published:2025-02-12
  • Contact: Feiyan GUO E-mail:2009200890@mail.nwpu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(52175450);National Defense Basic Research Project of China(JCKY2023205B006)

Abstract:

Due to the weak rigidity and large manufacturing deviations of thin-walled composite structural components, geometric deviations, excessive internal stresses, and assembly damage are prone to occur during assembly. The current assembly modes mostly consider the satisfaction of geometric accuracy, and pay less attention to the distribution of internal stresses and damages between components. The highly uncertain assembly stresses and damages packaged into service will affect structural stability directly. Firstly, the types and characteristics of assembly geometry deviations, the generation of internal stresses in assembly, and the formation mechanism of assembly damage were analyzed. Then, a correlation model between assembly geometry physics service assembly performance was proposed, demonstrating the bidirectional relationship between assembly geometry and physical performance on service performance. Secondly, the dynamic changes of initial assembly geometry deviation, internal stress, and damage state during service, as well as their impact on mechanical properties such as aircraft structural strength and fatigue life were analyzed, and basic theoretical guidance for the correlation analysis between assembly process and service performance indicators would be provided. Finally, key technologies such as assembly geometry and physical performance modeling, assembly service performance prediction, virtual simulation testing of assembly performance and service performance, and reverse engineering of assembly process parameters for service performance assurance were analyzed. Moreover, how to construct an assembly process model transformation for service performance assurance was discussed.

Key words: aircraft assembly, geometric deviation, assembly stress, structural damage, service performance

CLC Number: