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

doi:CNKI:11-1929/V.20110610.0902.001

固体力学与飞行器总体设计

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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

徐海伟¹, 曾捷¹, 梁大开¹, 王晓刚², 刘宏月¹

1. 南京航空航天大学飞行器结构力学与控制教育部重点实验室, 江苏南京 210016;
2. 海军航空工程学院青岛分院, 山东青岛 266041

收稿日期:2010-12-22 修回日期:2011-02-21 出版日期:2011-10-25 发布日期:2011-10-27
通讯作者: Tel.: 025-84893466 E-mail: zj2007@nuaa.edu.cn E-mail:zj2007@nuaa.edu.cn
作者简介:徐海伟(1984- ) 男,硕士研究生。主要研究方向:光纤传感技术及其在结构健康监测中的应用。 Tel: 025-84893466 E-mail: havidxu2006@163.com; 曾捷(1976- ) 男,博士,副教授,硕士生导师。主要研究方向:光纤传感技术及其在结构健康监测的应用。 Tel: 025-84893466 E-mail: zj2007@nuaa.edu.cn
基金资助:
国家自然科学基金 (50830201);航空科学基金(2008ZD52047);江苏省自然科学基金(BK2008388)

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

XU Haiwei¹, ZENG Jie¹, LIANG Dakai¹, WANG Xiaogang², LIU Hongyue¹

1. MOE Key Laboratory of Flight Vehicle Structural Mechanics and Control, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Qingdao Branch, Naval Aeronautical Engineering Academy, Qingdao 266041, China

Received:2010-12-22 Revised:2011-02-21 Online:2011-10-25 Published:2011-10-27

摘要/Abstract

摘要： 在不同飞行姿态及飞行条件下,可变体机翼智能结构及驱动器根据外部条件及控制指令,可以实现翼体自适应动态变形,表现出良好的空气动力学性能。由于翼体结构应力场与温度场的分布和作用形式复杂多样,因此需要对结构进行多物理场耦合分析,并准确获取翼体结构应变分布的有效信息。为此,采用COMSOL Multiphysic多物理场数值分析软件,对可变体机翼后缘缩比模型进行了应力场与温度场的模拟仿真研究,并通过构建分布式光纤Bragg光栅传感网络实现对可变翼体结构关键部位应变分布信息的监测。仿真研究与实验测试结果均能够准确反映翼体结构在应力场与温度场耦合作用下翼体翼表结构的应变变化情况。

关键词: 可变体机翼, 数值模拟, 分布式, 光纤Bragg光栅, 应变监测

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

中图分类号:

徐海伟, 曾捷, 梁大开, 王晓刚, 刘宏月. 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[J]. 航空学报, 2011, 32(10): 1842-1850.

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): 1842-1850.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

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

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

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