一种熔融沉积工艺的主应力场分区的路径规划方法

A Path Planning Method for the Partitioning of the Principal Stress Field on Fused Deposition Technology

为增强聚合物材料的3D打印工件的强度,降低由熔融丝材制造(Fused Filament Fabrication,FFF)工艺带来的各向异性,本文提出一种基于主应力场方向分区的层间交错复合路径规划方法(Interlayer Interleaved Composite Path,IICP)。该方法不仅可以保证特定工况条件下的层内增强,而且层间通过交错填充增加了相邻层的粘合力,增强了打印件的强度,与其他传统填充模式(如Zigzag等)相比,强度增加了17%。该方法既适用于任何复杂工况条件的分析,又能集成到目前市面主流的CAE软件中。

In order to enhance the strength of 3D-printed polymer parts and reduce the anisotropy caused by fused filament fabrication(FFF)process,this paper proposes an interlayer interleaved composite path(IICP)planning method based on the direction partitioning of the principal stress field.This method can not only ensure the intra-layer strengthening under specific working conditions,but also increase the adhesion of adjacent layers by interlayer interleaved filling,thus enhancing the strength of the printed part.Compared with other traditional filling modes(such as Zigzag),the strength increases by 17%.The method is not only applicable to any complex working condition analysis,but also can be integrated into the mainstream CAE software available in the market today.