机械科学与技术2025，Vol.44Issue(10)：1755-1762,8.DOI:10.13433/j.cnki.1003-8728.20230334
DLP成形工艺的柔性点阵结构疲劳特性研究
Study on Fatigue Characteristics of Flexible Lattice Structures Based on DLP Processing
摘要
Abstract
Lightweight,high-strength,and energy-absorbing lattice structures with integrated advantages have been paied significant attention for their mechanical properties.However,due to the complexity of the structures,to predict accurately their fatigue life remains challenging.Inspired by the geometric configurations of BCC and SC unit cells,an SC-BCC unit cell is designed,and expanded them periodically,and three flexible lattice structures by using DLP processing are fabricated.Fatigue property parameters were obtained by grouping method under strain level,and fatigue strength of lattice structure was predicted with numerical simulation.The reliability of the numerical simulation results was verified by constructing the S-N curves and discrete data obtained from low-cycle fatigue tests.The results showed that the S-N curves obtained from numerical simulations and experiments were highly consistent with the power-law relationship.Under the same relative density,the absolute fatigue strength largely depended on the unit cell configuration,while the difference in normalized fatigue strength was not significant.关键词
点阵结构/疲劳性能/组织工程支架/S-N曲线/DLP工艺Key words
lattice structure/fatigue property/tissue engineering scaffold/S-N curve/DLP processing分类
通用工业技术引用本文复制引用
王炜,纪小刚,方创,牛国法..DLP成形工艺的柔性点阵结构疲劳特性研究[J].机械科学与技术,2025,44(10):1755-1762,8.基金项目
国家自然科学基金项目(52175234,51105175) （52175234,51105175）
