基于光纤传感网络的可变体机翼应变场数值模拟及实验验证

Abstract

Abstract: In different flight postures and flight conditions, the intelligent structure and actuator of a morphing wing may perform dynamic deformation as required by external conditions and control commands, which demonstrates its good aerodynamic property. Due to the complicated and varied conditions of distribution and function of the stress field and the temperature field of the wing body structue, it is necessary to perform a coupling analysis of multi-physical fields to obtain accurate information of the strain distribution of the wing body structure. This paper adopts the COMSOL Multiphysic numerical analysis software to study the stress field and temperature field of a downscaled morphing wing edge model. A distributed optical fiber Bragg grating sensor network is constructed to monitor the strain distribution of the key structural parts. Both simulation and experimental results can reflect accurately the strain variation of the wing body structure under the coupled action of the stress and temperature fields.

Key words: morphing wing, numerical simulation, distributed, fiber Bragg grating, strain detection

CLC Number:

XU Haiwei, ZENG Jie, LIANG Dakai, WANG Xiaogang, LIU Hongyue. Numerical Simulation and Experimental Study of Strain Field for Morphing Wings Based on Distributed Fiber Bragg Grating Sensor Network[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(10): 1842.

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Numerical Simulation and Experimental Study of Strain Field for Morphing Wings Based on Distributed Fiber Bragg Grating Sensor Network

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