基于SLA制备的梯度点阵力学性能研究  

Study on mechanical properties of gradient lattice prepared by SLA preparation

作　　者：张迪 杨新俊 于伟 丁育健 蒋雨生 Zhang Di;Yang Xinjun;Yu Wei;Ding Yujian;Jiang Yusheng(School of Mechanical Engineering,Jiangnan University,Jiangsu Wuxi,214122,China;Jiangsu Provincial Key Laboratory of Advanced Food Manufacturing Equipment Technology,Jiangsu Wuxi,214122,China;Wuxi People's Hospital Affiliated to Nanjing Medical University,Jiangsu Wuxi,214122,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]江苏省食品先进制造装备技术重点实验室,江苏无锡214122 [3]南京医科大学附属无锡人民医院,江苏无锡214122

出　　处：《机械设计与制造工程》2025年第2期1-6,共6页Machine Design and Manufacturing Engineering

基　　金：无锡市卫生健康委科研重大项目(Z202010);无锡市科技发展资金社会发展科技示范工程(N20192006)。

摘　　要：为研究孔隙率变化策略对梯度点阵(FGS)变形模式和力学性能的影响,采用光固化方法,设计并制备了7种不同孔隙度变化策略的点阵结构。采用试验与仿真相结合的方法,首先探讨准静态压缩下点阵结构的破坏模式;然后定量分析弹性模量、屈服强度、单位吸收能和第一峰值应力与梯度变化策略的关系,从而寻求最优的梯度曲线。结果表明,梯度跨度越小即越接近均匀点阵力学性能越好,x3样品表现出较好的综合性能。The variation strategy of porosity in different regions of the gradient lattice has an important effect on its mechanical and biological properties.The purpose of this study is to analyze the effect of porosity change strategy on the deformation mode and mechanical properties of FGS.Seven lattice structures with different porosity change strategies are designed and prepared by photocuring method.The failure mode of lattice structure under quasi-static compression is discussed by combining experiment and simulation.Then,the relationship between elastic modulus,yield strength,unit absorbed energy,first peak stress and gradient change strategy is quantitatively analyzed,so as to find the optimal gradient curve.The results show that the smaller the gradient span is,the closer it is to the uniform lattice,the better the mechanical properties are.The x3 sample shows better comprehensive properties.

关 键 词：梯度点阵 光固化 孔隙率 变形模式 力学性能 

分 类 号：TH145[一般工业技术—材料科学与工程]