剪切变后掠角变体机翼结构及柔性蒙皮设计研究OA
Research on Shear Variable Sweep Wing Structure and Flexible Skin Design
变后掠飞行器可以满足不同飞行条件下的气动要求,对变体机翼而言,蒙皮起到保证气密性以及提供承载的作用,因此在变体机翼的发展史中,可变形蒙皮的研究占据了重要地位.本文首先基于可变平行四边形机构,设计并研制了一种剪切变后掠机翼;然后提出了基于单向纤维增强的复合蒙皮结构,选取橡胶材料和纤维增强橡胶材料作为柔性蒙皮研究对象,建立了蒙皮变形的本构模型,并对柔性蒙皮进行了数值仿真分析与剪切变形试验.本文设计研制的机翼可以实现剪切变后掠功能;柔性蒙皮在剪切变形时,试验结果与数值仿真结果具有良好的一致性;纤维增强橡胶柔性蒙皮具有更优良的抗起皱和承载能力.
The variable-sweep aircraft can meet the aerodynamic requirements under different flight conditions,but the skin needs to meet the large deformation and aerodynamic load requirements during the deformation process.In this paper,based on the variable parallelogram mechanism,a shear variable sweep wing was designed and manufactured firstly.Then,a composite skin structure based on unidirectional fiber reinforcement is proposed rubber materials and fiber-reinforced rubber materials were selected as the research objects of flexible skin,and a constitutive model of skin deformation was established.Numerical simulation analysis and shear deformation experiments were carried out on the flexible skin.The wing designed and manufactured in this paper can realize the function of shear-variable sweepback;When the flexible skin is deformed in shear,the experimental results are in good agreement with the numerical simulation results;The fiber-reinforced rubber flexible skin has better resistance wrinkle and load-bearing capacity.
封铮;李辉;徐志伟
南京航空航天大学 机械结构力学与控制国家重点实验室,江苏 南京 210016
剪切变后掠机翼柔性蒙皮本构模型数值仿真蒙皮剪切试验
shear-variable sweep-back wingflexible skinconstitutive modelnumerical simulationskin shear test
《航空科学技术》 2024 (005)
93-100 / 8
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