Abstract: To solve the mechanical properties problems of the current model,an adaptive path generation method for 3D printing of light-weight cellular was proposed based on the parameterized-controllable honeycomb path generated according to the material and compressive stress.By optimizing the parameters of cellular path,the optimization model based on the least material and the trajectory optimization model of adaptive compressive stress was established.Based on the mechanical properties analysis of honeycomb structure under the load-bearing,the adaptive generation of light-weight honeycomb trajectory under non-uniform load was realized.Experimental results illustrated that the method could generate the adaptive cellular paths with parameter control and achieve the mechanical properties optimization of light-weight structures,which provided a new way for improving the local load-bearing performance and the direct printing of lightweight structures.

Key words: 3D printing, lightweight, adaptive path, mechanical properties optimization

摘要： 为了解决当前模型轻量化的力学性能问题,根据材料和压应力分析生成参数可控的蜂窝状路径轨迹,提出一种轻量化蜂窝3D打印路径的自适应生成技术。通过对蜂窝路径的参数优化设计,建立了基于材料最少的优化模型和自适应压应力轨迹优化模型;基于蜂窝结构在承载下的力学性能分析,实现了对非均布载荷下轻量化蜂窝轨迹的自适应生成。实验分析表明,该方法能生成参数可控的自适应蜂窝路径轨迹结构,并可实现轻量化结构的力学性能优化,为提高局部承载性能轻量化结构的直接打印生成提供了新的思路。

关键词: 3D打印, 轻量化, 自适应路径, 力学性能优化