碳纳米纸复合材料机翼结构的电加热性能研究
发布时间：2018-11-15 21:46
【摘要】：针对目前飞机电热防冰过程中遇到的问题和现象,本课题以探索碳纳米纸作为热源的复合材料机翼结构的电加热规律为出发点,通过仿真模拟和实验相结合的办法,主要从碳纳米纸电加热层的设计制备,碳纳米纸复合材料层合板的层间温度分析,碳纳米纸复合材料机翼结构表面的传热特性等方面进行研究。为碳纳米纸复合材料机翼结构在某些电热防冰工况下热流密度的选取提供依据,从而降低实验成本、节省能源和提高实验效率。首先对碳纳米纸电加热层进行材料选取、形状设计、电流密度模拟和热成像测试,制备导电性能和电加热性能良好的碳纳米纸电加热层。其次,采用真空袋成型工艺制备碳纳米纸复合材料层合板,模拟碳纳米纸复合材料层合板在不同环境温度和热流密度条件下层间温度分布规律,与复合材料层合板的热成像实验进行对比验证。然后,对碳纳米纸复合材料机翼进行仿真模拟,得到环境温度、热流密度、风速与复合材料机翼表面温度的对应关系。最后,对碳纳米纸复合材料机翼结构进行电加热验证实验,验证仿真结果的正确性,为未来碳纳米纸复合材料电热防冰冰风洞实验设计提供指导。
[Abstract]:In view of the problems and phenomena encountered in the process of aircraft electrothermal ice prevention, this paper aims at exploring the electric heating law of composite wing structure with carbon nano-paper as heat source, and combines simulation with experiment. The design and preparation of electric heating layer of carbon nano-paper, the analysis of interlaminar temperature of carbon nanopaper composite laminates, and the heat transfer characteristics of wing surface of carbon nano-paper composite were studied. It provides a basis for the selection of heat flux density of carbon nanopaper composite wing structure under some electrothermal anti-ice conditions, thus reducing the experimental cost, saving energy and improving experimental efficiency. Firstly, the carbon nano-paper electric heating layer with good electrical conductivity and electric heating performance was prepared by material selection, shape design, current density simulation and thermal imaging test. Secondly, carbon nanopaper composite laminates were prepared by vacuum bag molding process. The temperature distribution of carbon nanopaper composite laminates under different ambient temperature and heat flux was simulated. It is compared with the thermal imaging experiment of composite laminated plate. Then, the simulation of carbon nano-paper composite wing is carried out to get the corresponding relationship between ambient temperature, heat flux, wind speed and surface temperature of composite wing. Finally, the validity of the simulation results is verified by the electric heating test on the wing structure of carbon nano-paper composite, which provides guidance for the future design of the electro-thermal ice-proof wind tunnel experiment of carbon nano-paper composite.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V224
，
本文编号：2334482
[Abstract]:In view of the problems and phenomena encountered in the process of aircraft electrothermal ice prevention, this paper aims at exploring the electric heating law of composite wing structure with carbon nano-paper as heat source, and combines simulation with experiment. The design and preparation of electric heating layer of carbon nano-paper, the analysis of interlaminar temperature of carbon nanopaper composite laminates, and the heat transfer characteristics of wing surface of carbon nano-paper composite were studied. It provides a basis for the selection of heat flux density of carbon nanopaper composite wing structure under some electrothermal anti-ice conditions, thus reducing the experimental cost, saving energy and improving experimental efficiency. Firstly, the carbon nano-paper electric heating layer with good electrical conductivity and electric heating performance was prepared by material selection, shape design, current density simulation and thermal imaging test. Secondly, carbon nanopaper composite laminates were prepared by vacuum bag molding process. The temperature distribution of carbon nanopaper composite laminates under different ambient temperature and heat flux was simulated. It is compared with the thermal imaging experiment of composite laminated plate. Then, the simulation of carbon nano-paper composite wing is carried out to get the corresponding relationship between ambient temperature, heat flux, wind speed and surface temperature of composite wing. Finally, the validity of the simulation results is verified by the electric heating test on the wing structure of carbon nano-paper composite, which provides guidance for the future design of the electro-thermal ice-proof wind tunnel experiment of carbon nano-paper composite.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V224
，
本文编号：2334482
本文链接：https://www.wllwen.com/kejilunwen/hangkongsky/2334482.html
