基于SLM工艺的变截面四棱锥点阵结构建模与试验研究

doi:10.3901/JME.2021.24.158

机械工程学报 ›› 2021, Vol. 57 ›› Issue (24): 158-165.doi: 10.3901/JME.2021.24.158

• 特邀专栏：液压元件及系统轻量化关键技术 • 上一篇下一篇

扫码分享

基于SLM工艺的变截面四棱锥点阵结构建模与试验研究

汪飞雪^1,2, 姚龙飞^1,2, 张天翊^1,2, 姚静¹, 张超³, 孔祥东¹

1. 燕山大学机械工程学院秦皇岛 066004;
2. 河北省轻质结构装备设计与制备工艺技术创新中心秦皇岛 066004;
3. 浙江大学机械工程学院杭州 310027

收稿日期:2021-06-15 修回日期:2021-10-22 出版日期:2021-12-20 发布日期:2022-02-28
通讯作者: 张天翊(通信作者),男,1998年出生。主要研究方向为点阵结构轻量化设计。E-mail:956681881@qq.com
作者简介:汪飞雪,男,1980年出生,博士,副教授。主要研究方向为塑性成形过程的工艺理论、形变行为及质量控制;结构优化设计及增材制造技术。E-mail:fxwang@ysu.edu.cn
基金资助:
国家自然科学基金资助项目（51890881）。

Modeling and Experimental Study of S-GBCC Lattice Structure Based on SLM Process

WANG Feixue^1,2, YAO Longfei^1,2, ZHANG Tianyi^1,2, YAO Jing¹, ZHANG Chao³, KONG Xiangdong¹

1. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004;
2. Hebei Innovation Center for Equipment Lightweight Design and Manufacturing, Qinhuangdao 066004;
3. School of Mechanical Engineering, Zhejiang University, Hangzhou 310027

Received:2021-06-15 Revised:2021-10-22 Online:2021-12-20 Published:2022-02-28

摘要/Abstract

摘要： 球型增强变截面四棱锥点阵结构（Spheriform graded body-centered cubic，S-GBCC）可以有效改善常规四棱锥点阵结构（Body-centered cubic，BCC）节点应力大、梁受力不均等缺陷，是一种力学性能更优的点阵构型，但其力学特性受单胞尺寸、梁的截面特性、节点连接方式等影响。考虑变截面梁和连接球体的几何构型，完成S-GBCC点阵结构的几何拓扑分析；基于铁木辛柯梁理论建立其力学与数学模型，得到点阵尺寸参数与相对密度、等效弹性模量、等效屈服强度之间的函数关系。利用选区激光熔融（Selective laser melting，SLM）工艺制备同一相对密度条件下，不同曲率半径的S-GBCC点阵结构，分析不同规格打印试样的形貌特征，形成考虑SLM工艺成形精度影响的S-GBCC点阵结构等效力学模型。完成该点阵结构静态压缩试验，分析其形变特性和力学性能，结果表明较传统BCC点阵结构有显著提升，理论与试验结果吻合较好。

关键词: 点阵结构, 四棱锥点阵, 选区激光熔融, 等效力学模型

Abstract: Spheriform graded body-centered cubic(S-GBCC) is a lattice structure with better mechanical properties, and it can effectively improve the defects of conventional body-centered cubic(BCC) lattice structure, such as large joint stress and uneven beam force. However, its mechanical properties are affected by the cell size, the cross-sectional characteristics of the beam and the joint connection mode. Considering the geometric configuration of the variable cross-section beam and the connected sphere, the geometric topology analysis of S-GBCC lattice structure is completed. Based on the Timoshenko beam theory, the mechanical and mathematical models are established, and the functional relationships between the lattice size parameters and the relative density, equivalent elastic modulus, and equivalent yield strength are obtained. The S-GBCC lattice structure with different radius of curvature at the same relative density was prepared by selective laser melting(SLM) process. Based on the analysis of the morphologies of the printed samples with different specifications, the equivalent mechanical model of S-GBCC lattice structure considering the influence of forming accuracy is formed. The static compression test of lattice structure is completed to analyze its deformation characteristics and mechanical properties. Compared with the traditional BCC lattice structure, the mechanical properties of S-GBCC are significantly improved. The theoretical and experimental results are in good agreement, which verifies the accuracy of the model.

Key words: lattice structure, body-centered cubic, selective laser melting, equivalent mechanical model

中图分类号:

TB383

汪飞雪, 姚龙飞, 张天翊, 姚静, 张超, 孔祥东. 基于SLM工艺的变截面四棱锥点阵结构建模与试验研究[J]. 机械工程学报, 2021, 57(24): 158-165.

WANG Feixue, YAO Longfei, ZHANG Tianyi, YAO Jing, ZHANG Chao, KONG Xiangdong. Modeling and Experimental Study of S-GBCC Lattice Structure Based on SLM Process[J]. Journal of Mechanical Engineering, 2021, 57(24): 158-165.

参考文献

[1] 孔祥东,朱琦歆,姚静,等.高端移动装备液压元件与系统轻量化发展综述[J]. 燕山大学学报,2020,44(3):203-217. KONG Xiangdong,ZHU Qixin,YAO Jing,et al. Overview of the lightweight development of high-end mobile equipment hydraulic components and systems[J]. Journal of Yanshan University,2020,44(3):203-217.
[2] 卢天健,何德坪,陈常青,等. 超轻多孔金属材料的多功能特性及应用[J]. 力学进展,2006,36(4):517-535. LU Tianjian,HE Deping,CHEN Changqing,et al. Multifunctional properties and applications of ultra-light porous metal materials[J]. Advances in Mechanics, 2006,36(4):517-535.
[3] 曾嵩,朱荣,姜炜,等. 金属点阵材料的研究进展[J].材料导报,2012,26(5):18-23. ZENG Song,ZHU Rong,JIANG Wei,et al. Research progress of metal lattice materials[J]. Materials Guide, 2012,26(5):18-23.
[4] 曹明顺. 基于SLM的金属3D打印轻量化技术及其应用探讨[J]. 广东蚕业,2018,52(7):26-27. CAO Mingshun. Metal 3D printing lightweight technology and its application based on SLM[J]. Guangdong Sericulture,2018,52(7):26-27.
[5] 朱健峰,戴宁,刘乐乐,等. 功能性点阵结构设计优化技术研究[J]. 机械设计与制造工程,2020,49(7):1-6. ZHU Jianfeng,DAI Ning,LIU Lele,et al. Research on optimization technology of functional lattice structure design[J]. Machine Design and Manufacturing Engineering,2020,49(7):1-6.
[6] SMITH M,GUAN Z,CANTWELL W,et al. Finite element modelling of the compressive response of lattice structures manufactured using the selective laser melting technique[J]. International Journal of Mechanical Sciences,2013,67(5):28-41.
[7] LEE K W,LEE S H,NOH K H,et al. Theoretical and numerical analysis of the mechanical responses of BCC and FCC lattice structures[J]. Journal of Mechanical Science and Technology,2019,33(5):2259-2266.
[8] PTOCHOS E,LABEAS G. Elastic modulus and poisson's ratio determination of micro-lattice cellular structures by analytica, numerical and homogenisation methods[J]. Journal of Sandwich Structures & Materials, 2012,14(5):597-626.
[9] MASKERY I,AREMU A O,SIMONELLI M,et al. Mechanical properties of Ti-6Al-4V selectively laser melted parts with body-centred-cubic lattices of varying cell size[J]. Experimental Mechanics,2015,55(7):1261-1272.
[10] 吴彦霖. 基于SLM制备的钛合金三维点阵结构的力学性能研究[D]. 重庆:重庆大学,2016. WU Yanlin. Study on the mechanical properties of the three-dimensional lattice structure of titanium alloy prepared by SLM[D]. Chongqing:Chongqing University,2016.
[11] 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.
[12] 冯琪翔. 基于选择性激光熔化的金属点阵结构力学特性及其变密度设计方法研究[D]. 重庆:重庆大学, 2017. FENG Qixiang. Research on the mechanical properties of metal lattice structure based on selective laser melting and its variable density design method[D]. Chongqing:Chongqing University,2017.
[13] GENG X,MA L,LIU C,et al. A FEM study on mechanical behavior of cellular lattice materials based on combined elements[J]. Materials Science & Engineering A,2018,712(5):188-198.
[14] 冀宾,顾铖璋,韩涵,等. 几种变截面点阵承受面外压缩载荷的力学行为[J]. 固体力学学报,2018,39(4):394-402. JI Bin,GU Chengzhang,HAN Han,et al. The mechanical behavior of several variable cross-section lattices subjected to out-of-plane compression loads[J]. Chinese Journal of Solid Mechanics,2018,39(4):394-402.
[15] 雷鹏福,戴宁,汪志鹏,等. 基于复杂点阵结构的节点强化技术研究[J]. 机械设计与制造工程,2018,47(12):1-4. LEI Pengfu,DAI Ning,WANG Zhipeng,et al. Research on node strengthening technology based on complex lattice structure[J]. Mechanical Design and Manufacturing Engineering,2018,47(12):1-4.
[16] 易长炎. 基于SLM的应力匹配变密度轻质金属点阵结构设计及力学性能研究[D]. 重庆:重庆大学,2019. YI Changyan. SLM-based stress-matched variable-density lightweight metal lattice structure design and mechanical properties research[D]. Chongqing:Chongqing University,2019.
[17] 毕延超,陶凤和,贾长治,等.选区激光熔化成形4Cr5MoSiV1钢无支撑悬垂结构质量研究[J]. 金属加工(热加工),2021(4):63-65. BI Yanchao,TAO Fenghe,JIA Changzhi,et al. Study on the quality of unsupported suspension structure of 4Cr5MoSiV1 steel formed by laser melting in selected areas[J]. Metal Processing (Hot Processing),2021(4):63-65.
[18] 杜磊,柯林达,孙京丽,等. 选区熔化Ti-6Al-4V合金热行为及成形质量研究[J]. 热加工工艺,2021,50(2):41-46. DU Lei,KE linda,SUN Jingli,et al. Study on thermal behavior and forming quality of Ti-6Al-4V alloy in selective melting[J]. Hot Working Technology,2021,50(2):41-46.
[19] 滕庆,孙闪闪,薛鹏举,等. 激光选区熔化/热等静压复合成形Inconel 718组织与性能研究[J]. 航空制造技术,2020,63(13):53-60. TENG Qing,SUN Shanshan,XUE Pengju,et al. Research on the structure and properties of Inconel 718 by laser selective melting/hot isostatic pressing[J]. Aeronautical Manufacturing Technology,2020,63(13):53-60.
[20] 张国全,顾冬冬. 选区激光熔化成形TiC固溶增强钨基复合材料研究[J]. 稀有金属材料与工程,2015,44(4):1017-1023. ZHANG Guoquan,GU Dongdong. Research on selective laser melting formation of TiC solid solution reinforced tungsten matrix composites[J]. Rare Metal Materials and Engineering,2015,44(4):1017-1023.
[21] 李洋,陈长军,王晓南,等. 选区激光熔化技术制备316L多孔不锈钢工艺及性能研究[J]. 应用激光,2015,35(3):319-323. LI Yang,CHEN Changjun,WANG Xiaonan,et al. Research on technology and performance of 316L porous stainless steel prepared by laser melting technology in selected areas[J]. Applied Laser,2015,35(3):319-323.
[22] MAHSHID R,HANSEN H N,HJBJERRE K L. Strength analysis and modeling of cellular lattice structures manufactured using selective laser melting for tooling applications[J]. Materials & Design,2016,104:276-283.
[23] TIAN C,LI X,ZHANG S,et al. Study on design and performance of metal-bonded diamond grinding wheels fabricated by selective laser melting (SLM)[J]. Materials & Design,2018,156:52-61.

基于SLM工艺的变截面四棱锥点阵结构建模与试验研究

Modeling and Experimental Study of S-GBCC Lattice Structure Based on SLM Process

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 5

编辑推荐

Metrics

本文评价

[1]	李永欣, 郭长春, 李凯伦, 于天. SLM制备的小长径比四棱锥点阵填充轻量化研究[J]. 机械工程学报, 2021, 57(24): 132-138.
[2]	纪小刚, 张建安, 栾宇豪, 张溪溪, 胡海涛. 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.
[3]	廖中源, 王英俊, 王书亭. 基于拓扑优化的变密度点阵结构体优化设计方法[J]. 机械工程学报, 2019, 55(8): 65-72.
[4]	柏龙, 熊飞, 陈晓红, 易长炎, 张俊芳, 陈锐. SLM制备的Ti6Al4V轻质点阵结构多目标结构优化设计研究[J]. 机械工程学报, 2018, 54(5): 156-165.
[5]	杜义贤, 李涵钊, 田启华, 尹艺峰, 罗震. 基于能量均匀化的高剪切强度周期性点阵结构拓扑优化[J]. 机械工程学报, 2017, 53(18): 152-160.