单元晶胞尺寸对晶格结构力学性能的影响

黄西娜; 翟月雯

doi:10.7652/xjtuxb202306013

您当前的位置：

首页 >

文章列表页 >

单元晶胞尺寸对晶格结构力学性能的影响

—————————————————————— | 更新时间：2025-05-08

- 单元晶胞尺寸对晶格结构力学性能的影响
- Influence of Unit Cell Size on Mechanical Properties of Lattice Structure
- 西安交通大学学报 2023年57卷第6期页码：115-122
- 作者机构：
  
  1. 中国矿业大学(北京)机电与信息工程学院,北京,100083
  2. 北京机电研究所有限公司,北京,100083
- 作者简介：
  
  : 2022-09-19。作者简介: 黄西娜(1987—),女,博士,讲师。基金项目: 国家自然科学青年基金资助项目(42102345)
- 基金信息：
  
  : 2022-09-19。作者简介: 黄西娜(1987—),女,博士,讲师。基金项目: 国家自然科学青年基金资助项目(42102345);中央高校基本科研业务费资助(2022XJJD01)。
- DOI：10.7652/xjtuxb202306013
  中图分类号： TG146.2
- 网络首发：2023-06-10，
  
  纸质出版：2023
- 稿件说明：
移动端阅览
黄西娜, 翟月雯. 单元晶胞尺寸对晶格结构力学性能的影响[J]. 西安交通大学学报, 2023,57(6):115-122.

HUANG Xina, ZHAI Yuewen. Influence of Unit Cell Size on Mechanical Properties of Lattice Structure[J]. 2023, 57(6): 115-122.
黄西娜, 翟月雯. 单元晶胞尺寸对晶格结构力学性能的影响[J]. 西安交通大学学报, 2023,57(6):115-122. DOI： 10.7652/xjtuxb202306013.

HUANG Xina, ZHAI Yuewen. Influence of Unit Cell Size on Mechanical Properties of Lattice Structure[J]. 2023, 57(6): 115-122. DOI： 10.7652/xjtuxb202306013.

摘要

为了解具有晶格结构的先进轻质多功能材料的力学性能

以激光选区熔化制备的体心立方单元晶胞晶格结构为例

揭示了单元晶胞尺寸对晶格结构力学性能的影响规律。采用干重法测量晶格结构的质量

通过计算孔隙率确定了单元晶胞尺寸对孔隙率的影响规律; 通过压缩实验、压-压疲劳实验及扫描电镜断口形貌图

分析了晶格结构力学性能的演化规律。实验结果表明:所有样品的实际孔隙率均低于设计值

当单元晶胞尺寸为2.5 mm时

孔隙率的设计值与实际值偏差最大

为8.2%; 当单元晶胞尺寸为7.5 mm时

孔隙率的设计值与实际值偏差最小

为1.6%; 当单元晶胞尺寸从2.5 mm增加到7.5 mm

晶格结构的压缩强度降低了41.96%

说明单元晶胞尺寸增加会导致晶格结构抵抗压缩变形的能力变小即塑性变差

断裂模式从塑性断裂向脆性断裂转变且疲劳循环次数减小。此外

单元晶胞尺寸较小时瞬断区断口主要由韧窝组成

而单元晶胞尺寸较大时

瞬断区表现为光滑的平面和少量的韧窝

说明晶格结构更脆。该研究结果可为晶格结构单元晶胞尺寸的设计和选择提供参考。

Abstract

To understand the mechanical properties of advanced lightweight multifunctional materials with a lattice structure

the body-centered cubic unit cell lattice structure prepared by selective laser melting was taken as an example to reveal the influence of the unit cell size on the mechanical properties of the lattice structure. Firstly

the mass of the lattice structure was measured by the dry weight method

the porosity was calculated

and the influence law of unit cell size on porosity was studied. Then

the evolution law of mechanical properties of lattice structure was studied through compression testing

compression-compression fatigue testing and scanning electron microscope fracture topography. The results showed that the actual porosity of all samples was lower than the design value. When the unit cell size was 2.5 mm

the actual porosity showed a maximum deviation of 8.2% from the design value. However

when the unit cell size was 7.5 mm

the deviation was the smallest(1.6%). As the unit cell size increased from 2.5 mm to 7.5 mm

the compressive strength of the lattice structure decreased by 41.96%

indicating that the ability of the lattice structure to resist compression deformation became smaller

and the plasticity became worse. In addition

the fracture mechanism changed from plastic fracture to brittle fracture

and the number of fatigue cycles decreased. The transient zone was mainly composed of dimples when the unit cell size was small while it displayed a smooth plane and a small amount of dimples when the unit cell size was large

indicating that the lattice structure was more brittle. The research results can provide a reference for the design and selection of the unit cell size of the lattice structure.

关键词

Keywords

references

LIU Hui, CHEN Lianxiong, JIANG Yi, et al. Multiscale optimization of additively manufactured graded non-stochastic and stochastic lattice structures [J]. Composite Structures, 2023, 305: 116546.[2] 徐亮, 谌清云, 席雷, 等. 微类桁架点阵结构填充内冷通道的多目标优化设计 [J]. 西安交通大学学报, 2020, 54(3): 1-11.XU Liang, CHEN Qingyun, XI Lei, et al.Multi-objective optimization design of micro-class truss lattice structure for filling internal cooling channel [J]. Journal of Xi'an Jiaotong University, 2020, 54(3): 1-11.[3] LIANG Dong, HE Guanlin, CHEN Wei, et al. Fluid flow and heat transfer performance for micro-lattice structures fabricated by selective laser melting [J]. International Journal of Thermal Sciences, 2022, 172(Part B): 107312.[4] CHEN Li, CHEN Jian, LI Wei, et al. Research on high temperature compression and creep properties of porous copper alloy [J]. Applied Mechanics and Materials, 2017, 853: 122-126.[5] ZHANG Lei, SONG Bo, LIU Ruijie, et al. Effects of structural parameters on the Poisson's ratio and compressive modulus of 2D pentamode structures fabricated by selective laser melting [J]. Engineering, 2020, 6(1): 56-67.[6] YU Kunhao, FANG N X, HUANG Guoliang, et al. Magnetoactive acoustic metamaterials [J]. Advanced Materials, 2018, 30(21): 1706348.[7] YANG Xin, GONG Yu, ZHAO Libin, et al. Compressive mechanical properties of layer hybrid lattice structures fabricated by laser powder bed fusion technique [J]. Journal of Materials Research and Technology, 2023, 22: 1800-1811.[8] GUPTA A, TALHA M. Recent development in modeling and analysis of functionally graded materials and structures [J]. Progress in Aerospace Sciences, 2015, 79: 1-14.[9] YIN Sha, CHEN Haoyu, WU Yaobo, et al. Introducing composite lattice core sandwich structure as an alternative proposal for engine hood [J]. Composite Structures, 2018, 201: 131-140.[10] YAN Xingchen, LI Qing, YIN Shuo, et al. Mechanical and in vitro study of an isotropic Ti6Al4V lattice structure fabricated using selective laser melting [J]. Journal of Alloys and Compounds, 2019, 782: 209-223.[11] WILLIAMS B E, BROCKMEYER J, TUFFIAS R H. Composite foam structures: US6929866B1 [P]. 2005-08-16.[12] CHEN Hongjie, WANG Chunli, ZHU Xiangdong, et al. Fabrication of porous titanium scaffolds by stack sintering of microporous titanium spheres produced with centrifugal granulation technology [J]. Materials Science and Engineering: C, 2014, 43: 182-188.[13] WANG Chunli, CHEN Hongjie, ZHU Xiangdong, et al. An improved polymeric sponge replication method for biomedical porous titanium scaffolds [J]. Materials Science and Engineering: C, 2017, 70(Part 2): 1192-1199.[14] 宋剑锋, 宋有年, 王文武, 等. 金属粉末选区激光熔化成形表面粗糙度预测及控制方法研究 [J]. 中国激光, 2022, 49(2): 75-88.SONG Jianfeng, SONG Younian, WANG Wenwu, et al. Prediction and control on the surface roughness of metal powder using selective laser melting [J]. Chinese Journal of Lasers, 2022, 49(2): 75-88.[15] YUAN Zijun, CHEN Xiangdong. Novel approach for fabricating horizontal overhanging structures in selective laser melting [J]. Journal of Manufacturing Processes, 2023, 85: 793-801.[16] 杨益, 党明珠, 李伟, 等. 激光选区熔化钛铝合金裂纹形成机理及抑制研究 [J]. 机械工程学报, 2020, 56(3): 181-188.YANG Yi, DANG Mingzhu, LI Wei, et al.Study on cracking mechanism and inhibiting process of TiAl alloys fabricated by selective laser melting [J]. Journal of Mechanical Engineering, 2020, 56(3): 181-188.[17] 刘林青, 宋长辉, 杨永强, 等. 异种材料激光选区熔化界面结构强化机理研究 [J]. 机械工程学报, 2020, 56(3): 189-196.LIU Linqing, SONG Changhui, YANG Yongqiang, et al.Study on mechanism of strengthening interface structure of dissimilar materials by selective laser melting [J]. Journal of Mechanical Engineering, 2020, 56(3): 189-196.[18] LABEAS G N, SUNARIC M M. Investigation on the static response and failure process of metallic open lattice cellular structures [J]. Strain, 2010, 46(2): 195-204.[19] 王健. 激光增材制造点阵结构力学性能研究 [D]. 北京: 北京理工大学, 2016.[20] HUANG Xina, DING Shoubin, LANG Lihui, et al. Compressive response of selective laser-melted lattice structures with different strut sizes based on theoretical, numerical and experimental approaches [J]. Rapid Prototyping Journal, 2023, 29(2): 209-217.[21] 纪小刚, 张建安, 栾宇豪, 等. 仿皮肤三维多孔点阵结构压缩吸能性能研究 [J]. 机械工程学报, 2021, 57(15): 222-230.JI Xiaogang, ZHANG Jianan, LUAN Yuhao, et al.Research on compression energy absorption performance of skin-like 3D porous lattice structure [J]. Journal of Mechanical Engineering, 2021, 57(15): 222-230.[22] HUANG Xina, ZHANG Sheng, HU Quandong, et al. Coupling effect of unit cell topology and forming orientation on the Ti6Al4V porous structures fabricated using selective laser melting [J]. Advanced Engineering Materials, 2019, 21(2): 1800737.[23] WARNKE P H, DOUGLAS T, WOLLNY P, et al. Rapid prototyping: porous titanium alloy scaffolds produced by selective laser melting for bone tissue engineering [J]. Tissue Engineering: Part C Methods, 2009, 15(2): 115-124.[24] ZHANG Sheng, WEI Qingsong, CHENG Lingyu, et al. Effects of scan line spacing on pore characteristics and mechanical properties of porous Ti6Al4V implants fabricated by selective laser melting [J]. Materials & Design, 2014, 63: 185-193.[25] BECKER W T. Mechanisms and appearances of ductile and brittle fracture in metals [M]//BECKER W T, SHIPLEY R J. Failure Analysis and Prevention. New York, NY, USA: ASM International, 2002: 587-626.[26] KERLINS V. Modes of fracture [M]//ASM Handbook Committee: Fractography. New York, NY, USA: ASM International, 1987: 12-71.[27] 张骁勇, 王荣. 材料的断裂与控制 [M]. 西安: 西北工业大学出版社, 2012.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

β-磷酸钙增强锌合金激光选区熔化成型与界面调控

Co掺杂ZnO纳米粉体的结构和光学性能

EBSILON软件在热电联产系统优化中的应用综述

张角凹坑气膜孔对双层壁气膜冷却特性的影响

语义区分和子图整合驱动的知识图谱表示学习方法