【作者】 丁红；

【导师】 应丽霞；

【作者基本信息】 哈尔滨工程大学 ， 机械设计及理论， 2011， 硕士

【摘要】 可折叠弹翼能够满足航弹智能变形的要求,其结构参数、展开特性直接影响航弹的气动特性和弹道轨迹,因而对折叠翼结构和展开过程的分析尤为重要。本文以折叠翼为研究对象,对其结构组成及各部件的工作原理进行研究,建立了折叠翼的三维有限元模型,进行了静力学与模态有限元分析和展开机构运动特性及仿真分析,并对其进行静力试验和展开试验,验证模型建立的准确性、分析方法的合理性。首先对折叠翼结构组成及各部件的工作原理进行研究；通过有限元分析技术建立折叠翼有限元模型,对其进行静力学分析,模拟实际受力位置进行加载,直观地展现了弹翼的应力场、位移场、分析了翼片的强度；对折叠翼进行模态分析,得到了弹翼的固有频率和固有振型。在ADAMS平台上,应用虚拟样机技术,对可折叠机翼的折叠过程进行了运动特性仿真分析,模拟计算了折叠翼的运动过程,得到了活动翼的角速度、角加速度、展开时间等性能参数。对折叠翼进行了静力试验和展开试验,得到折叠翼在使用载荷、设计载荷作用下的应力分布、变形形态、最大承载能力、折叠翼展开时间、气缸最大压力值、角速度、角加速度等性能参数。最后,对折叠翼的结构、材料等提出了改进建议。分析了能源组件作动筒节流孔三种不同尺寸孔径的气缸压力峰值大小、峰值时间,确定了更合理的方案。并对两种复合材料折叠翼的性能进行了计算分析,选取碳纤维材料用于活动翼的设计制作。本文的研究工作为折叠翼机构的改进和设计制造提供了参考。更多还原

【Abstract】 Folding wing can meet the requirement of aircraft missiles’ intelligent deformation. The structural parameters and expand characteristics directly impact the aerodynamic characteristics and ballistic trajectories of cruise missiles. Thus the analysis of folding wing structure and motion process is particularly important. Taking folding wings as the research object, the parts of structure and working principle were studied in this paper. The three-dimensional finite element model of wing was established. The static character, modal character and motion character of expand sector were analyzed. The static and expand tests were carried. The accuracy of model establishment and rationality of analysis method was testified.Firstly, the composition of the folding wing and the principle of different parts were studied. On the basis of its finite element model, the loading position was simulated and the static analysis was carried out, and then the stress field, displacement field and the strength of the wing was calculated; the natural frequency and modal shape were obtained by modal analysis of the folding wing.Using virtual prototyping technology on ADAMS platforms, motion character of the wing folding process was analysis and its movement was simulated, and the angular velocity, angular acceleration, opening time and other performance parameters of the active wing were calculated.The stress distribution, deformation patterns and the maximum carrying capacity were obtained under apply load and design load by carrying out the static test of the folding wing. Through the expending test of the folding wing, the opening time, the maximum cylinder pressure, angular velocity, acceleration velocity and other performance parameters were gotten.Finally, the improvement of folding wing structure and materials was proposed. The more reasonable option was determined, after analysis of the peak pressure and peak time of three different throttle aperture size of energy component actuating cylinder. On finite element static analysis of two composite material wings, the carbon fiber was used to design and manufac manufacture folding wings.The research of paper provided a reference for the organization and improvement of the folding wing design and manufacturing.更多还原