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通过分析预浸带/纱在曲面上的铺放工艺性,提出以轨迹测地曲率作为铺放工艺性测度,构建一种基于结构设计的自调节轨迹规划算法,兼顾自动铺放中的铺放工艺性和结构设计要求。该算法是在满足结构设计的前提下,将预浸带/纱轨迹从结构设计所确定的方向按特定方式向测地线方向偏转,从而减小预浸带/纱的变形。本文以固定角度法作为结构设计准则、以最大容许偏转角法定义修正函数,以此为例阐述具体算法及实施过程。基于Visual C++平台,进行C++和SQL混合编程,以某型进气道为模型进行了算法仿真,并进行了进气道和锥壳的铺放试验。结果表明:容许偏转角的增大有助于缓解预浸带/纱的变形。
By analyzing the laying processability of prepreg tape / yarn on the curved surface, the geodesic geodesics is proposed as the measure of laying processability, and a self-adjusting trajectory planning algorithm based on structure design is proposed, taking into account the placement in automatic placement Technological and structural design requirements. The algorithm is designed to meet the structural premise, the pre-dip tape / yarn track from the direction of structural design determined in a specific way to geodesic direction deflection, thereby reducing the prepreg / yarn deformation. In this paper, the fixed angle method is used as the structural design criteria, the maximum allowable deflection angle method to define the correction function, as an example to illustrate the specific algorithm and implementation process. Based on the Visual C ++ platform, C + + and SQL mixed programming was carried out. The simulation was carried out with a certain type of air intake as a model, and the laying test of inlet duct and conical shell was carried out. The results show that the allowable deflection angle helps to alleviate the deformation of prepreg tape / yarn.