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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (18): 228065-228065.doi: 10.7527/S1000-6893.2022.28065

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles    

Optimum design method for static test of aircraft wing segment

Bin WANG1, Jianjun ZHENG1,2(), Wei LIU1, Mengmeng WANG1   

  1. 1.National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi’an 710065,China
    2.State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace,Xi’an Jiaotong University,Xi’an 710049,China
  • Received:2022-09-28 Revised:2022-10-26 Accepted:2022-12-14 Online:2022-12-16 Published:2022-12-14
  • Contact: Jianjun ZHENG E-mail:ylzjj_86@163.com

Abstract:

Aircraft component static test is an important means to verify structure carrying capacity and finite element models. The component test has a fairly small scale compared with full scale static tests. However, the separation surface stiffness mapping, support simulation and load simulation problems need to be solved to ensure that the accuracy of structural assessment is not affected. The static test on the middle wing section of an aircraft with a combined wing layout is conducted, which requires the solution to the multi-separation surface optimum design, aerodynamic load and inertial load optimum design and application. We adopt the design idea of hierarchical decoupling, stripping each influence factor of the test design step by step and establishing corresponding models for comparison analysis. Optimum design is carried out according to the structure responding error to evaluate errors from each simplified simulation. Based on the structural finite element numerical simulation analysis, we propose test techniques such as the multi-hinged joint displacement and active load hybrid simulation, stiffness decoupling optimum design of the separation surface loading replacement part, load optimum design and application of truss wings to achieve a higher precision level of the component test design.

Key words: component test, hierarchical decoupling, boundary simulation, displacement and active load hybrid simulation, stiffness decoupling

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