A maze-like path generation scheme for fused deposition modeling
A maze-like path generation scheme for fused deposition modeling
复制标题
熔融沉积建模的迷宫式路径生成方案
DOI：
10.1007/s00170-019-03986-7
复制
发表时间：
2019-09-01
影响因子：
3.4
通讯作者：
Xie, Yi Min
中科院分区：
文献类型：
--
作者：
Lin, Sen;Xia, Lingwei;Xie, Yi Min
增材制造有可能为制造复杂结构提供新的解决方案。然而，这种方法的主要障碍之一是制造产品的各向异性机械性能，这阻碍了增材制造在现代工业中的普及。本文介绍了一种简单而通用的算法，通过优化印刷路径来生产各向同性产品。在该方法中，工件首先根据印刷顺序被分成不同的区域，从而提高了制造过程的效率。随后，在每个子区域中规划打印路径，以允许短的挤出长度和低数量的启停过程。最后，通过一系列的拉伸试验和断口分析，修正了这种迷宫状的印刷路径，以验证各向同性。弯曲和压痕试验表明，样品在强度和力学性能各向同性方面表现出优异的性能。此外，数值和物理实验验证了这种迷宫状图案在防止由残余应力引起的翘曲方面的优势。这项工作可能在打印需要各向同性特性的模具中发挥重要作用。
Additive manufacturing has the potential to provide novel solutions for fabricating complex structures. However, one of the main obstacles for such methods is the anisotropic mechanical properties of the manufactured product, which hinder the popularization of additive manufacturing in modern industries. Here, a simple yet versatile algorithm is introduced to produce isotropic products via optimizing the printing path. In this method, the workpiece is first separated into distinct areas in terms of the printing sequence, which increases the efficiency of the fabrication process. Subsequently, the printing path is schemed in each sub-region to allow a short extrusion length and low number of start-stop processes. Finally, this maze-like printing path is revised through a series of tensile tests and fracture surface analyses to validate the isotropy. Bending and indentation tests demonstrate that the samples present distinguished properties in terms of strength and isotropy in mechanical properties. Moreover, numerical and physical tests are implemented for validating the advantage of this maze-like pattern in preventing warping caused by residual stress. This work may play a significant role in printing molds that require isotropic properties.