【作者】 宁素娟；

【导师】 王帮峰；

【作者基本信息】 南京航空航天大学 ， 测试计量技术及仪器， 2010， 硕士

【摘要】 变体机翼成为未来先进飞行器的发展方向之一。变体机翼为了实现光滑大变形以及承受较大的气动载荷,要求机翼蒙皮沿变形方向有较大柔度,在垂直变形方向有较强的抗弯刚度。波纹结构在沿波纹方向(纵向)有较大柔度,在垂直于波纹方向(横向)有较大的抗弯刚度,因此,可以作为变体机翼蒙皮的一种候选结构。本文的研究重点是波纹式碳纤维增强复合材料蒙皮,并就其集驱动器与传感器于一体的智能结构进行了初步探究。本文探索了波纹式碳纤维增强复合材料作为变体机翼蒙皮的可行性,推导了复合材料的密度、各相所占的分数、复合材料中的孔隙含量以及材料拉伸弹性模量的计算公式,研究了结构纵向变形能力和横向承载能力,为进一步研究奠定了基础。分析实验数据,并根据复合材料理论分析模型,得出试件理论拉伸曲线和三点弯曲载荷下的理论挠曲线,分别与实验数据进行比较。分析结果表明,复合材料中的孔隙含量小于1%,证明了试件的有效性;弹性模量实验值与理论值误差约为5%;该结构有较好的纵向变形能力和横向承载能力,在弹性变形段内,理论曲线与测试曲线基本吻合,误差小于10%,证明了波纹式碳纤维增强复合材料作为变体机翼蒙皮可行。在此基础上,本文初步探索了波纹式碳纤维增强树脂复合材料智能结构形式,研究了SMA丝驱动器及光纤传感器集基体于一体的制造工艺,并初步探索了驱动器的驱动方式,为进一步完善其智能功能奠定基础。更多还原

【Abstract】 One of development directions of future aircrafts is morphing wing. Flexible in deformation direction and stiff in the direction perpendicular to the deformation direction are essential to get smooth large deformation and withstanding large aerodynamic loads. Corrugated-form is very flexible in the corrugation (longitudinal) direction and show enough resistance against bending loads in the direction (transverse) perpendicular to the corrugation. So, corrugated-form is expected to be a candidate to develop skin of morphing wings. In this investigation, research focus was put on the corrugated-form composites, And made the preliminary exploration to the intelligence structure of driver and sensor in one.This paper explored the feasibility of corrugated carbon fiber reinforced composite made as the morphing wings,Deduced the density of reinforced composite, the percentage each phase takes, content of pore in reinforced composite and the calculation formula of materials tensile elastic modulus,researched the longitudinal strain capacity and the transverse carrying capacity, and laid a foundation for further study. According to the analysis of experimental data, based on the theoretical model of composite, we can get a theoretical tensile curve of specimen and the theoretical deflection curves on 3-point bending load bending, then compared them with experimental data respectively. The results of analysis show that the content of the pore in composite is less than 1%,which proved the effectiveness of the specimen; the error between experimental value of Elastic modulus and theoretical value is about 5%, This structure has better longitudinal strain capacity and the transverse carrying capacity, In the elastic deformation section, theoretical curve and test curve fit basically, error is less than 10%, which proved that the corrugated carbon fiber reinforced composite made as the Variant wings is feasible.on that basis, this paper made preliminary exploration to the corrugated carbon fiber reinforced composite intelligence structure, researched the manufacturing engineering of SMA wires driver and FOS in one, and made preliminary exploration to the drive mode of driver, which set up the foundation for further improving its intelligent function.更多还原