摘要
基于自动铺丝设备具有可灵活操作的铺放头及铺放所采用的预浸纤维丝宽度窄等特点,提出一种新型的铺层成型算法——变角度丝束铺放,其具有无间隙和无重叠的特点.以锥壳零件为例,首先建立此类零件几何特征的数学模型,推导出锥壳零件上任意轨迹的数学方程;然后提出变角度铺层的成型原理及方法,建立变角度轨迹规划算法的数学模型并推导出锥壳零件上任意变角度铺放路径及路径曲率的数学方程,再结合自动铺丝设备及预浸丝束自身特点对变角度铺层的可铺性进行分析.最后通过仿真实验对文中算法进行了验证.
Considering the flexibility of the fiber placement head and the small width of the towpreg, a new trajectory planning algorithm of automated fiber placement, namely, variable--angles trajectory planning algorithm, is presented. And the placed variable angles plies have no gaps and no overlapping. Taking the conical shell as an example, the mathematical model of geometric features of the conical shell is built up first. Then the mathematical equations of any trajectory on the conical shell surface can be derived. After introducing the theory and method of forming of variable angles plies, the mathematical model of variable angles trajectory planning algorithm is addressed and the mathematical equations of curvature of any trajectory is derived. The manufacturability of the variable angles plies has been analyzed. At last, through the simulation experiment of fiber placement, the variable angles trajectory planning algorithm has been proved.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2012年第3期400-405,共6页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金(51005060)
国家科技重大专项(2009ZX04004-111)
关键词
自动铺丝技术
锥壳零件
变角度纤维铺放
铺层
可铺性
automated fiber placement technology
conical shell
variable--angle fiber placement
ply
manufacturability
