梁类零件转角区域自动铺丝分析

Analysis of Automated Fiber Placement in Corner Area of Beam Parts

在航空航天领域,自动铺丝已经被广泛应用于制造形状复杂的复合材料构件,C型梁就是其中的典型。C型梁结构通常具有曲率很大的转角过渡区域,保证该区域内的±45°路径铺放质量和铺放效率是C型梁结构铺放过程中的难题。为解决这一问题,分别研究了减丝束方法和缠绕方法对梁类零件转角区域铺放质量的影响,并进一步对比分析了减丝束法和缠绕法两种铺放策略在铺放转角区域时的优劣。建立了实际铺放过程中两种铺放策略的选择原则。最终通过实际铺放试验证明减丝束法和缠绕法相结合能够更有效地保证C型梁转角区域的铺放质量和铺放效率。

In the aerospace area,automated fiber placement(AFP)has been widely used in the manufacture of complex-shaped composite materials.The C-beam is a typical example.The C-beam usually has a corner transition area with a large curvature.At the corner,it is difficult to ensure the placement quality and efficiency of the±45°paths.In order to solve this problem,the influence on placement quality of the fiber number reducing method and the winding method is analyzed respectively.Furthermore,the advantages and disadvantages of the two placement strategies in the corner area are compared,and a comprehensive placement strategy is established.Finally,placement experiments are carried out on a C-beam and the results show that the comprehensive placement strategy can effectively ensure the placement quality and efficiency at the corner area of the C-beam.