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| Dynamic Simulation of Telescopic Mechanism for Morphing Aircraft in the Condition of Heavy Loads and Large Deformations |
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| DOI：10.7643/issn.1672-9242.2022.09.010 |
| KeyWord:morphing aircraft telescopic mechanism mechanical and structural integration modeling rigid-flexible mixed multibody dynamics wheel-rail rolling contact dynamics mechanical system telescope movement test with loads |
| Author | Institution |
| HUANG Hu |
Chengdu Aircraft Design & Research Institute AVIC, Chengdu , China |
| WU Xing-wen |
Southwest Jiaotong University, Chengdu , China |
| ZHANG Fan |
Chengdu Aircraft Design & Research Institute AVIC, Chengdu , China |
| HU Li |
Chengdu Aircraft Design & Research Institute AVIC, Chengdu , China |
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| Abstract: |
| In order to adapt to advanced fighter shape variation, it’s necessary to design the telescopic mechanism under complex and severe load environment, and to fulfill the system function of supporting variant movement and transmitting large loads under large deformation conditions such as overall bending and torsion. For this kind of heavy load and large deformation telescopic mechanism, in this paper, a simulation analysis method combining mechanism dynamics and structural dynamics has been constructed. The method is used to consider the change of load and motion transmission characteristics caused by the change of overall stiffness distribution during the variant movement, and to analyze the contact dynamics details of local wheel-rail moving components. This paper has carried out the dynamic simulation in the process of expansion and contraction, and obtained the change of motion parameters and dynamic responses of the complete telescopic mechanism under severe external loads. Compared with the test of typical box section’s telescoping movement with loads, the calculation error of the maximum load at the intersection point of the mechanism is less than 7.9%, and the calculation error of the maximum free end displacement is less than 13.2%. The method established in this paper provides a reliable and efficient simulation method for the optimization of movement and load transmission performance and structural strength design analysis of each component of the mechanism, and has important application value for the integrated design of the aircraft structure and telescopic mechanism of morphing aircraft. |
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