Design and mechanical testing of porous lattice structure with independent adjustment of pore size and porosity for bone implant

作者全名："Zhang, Junfang; Shen, Yifan; Sun, Yuanxi; Yang, Jianxing; Gong, Yu; Wang, Ke; Zhang, Zhiqing; Chen, Xiaohong; Bai, Long"

作者地址："[Zhang, Junfang; Sun, Yuanxi; Yang, Jianxing; Chen, Xiaohong; Bai, Long] Chongqing Univ, Coll Mech & Vehicle Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China; [Shen, Yifan] Chongqing Med Univ, Affiliated Hosp 1, Ctr Clin Mol Med Detect, Chongqing 400016, Peoples R China; [Sun, Yuanxi; Chen, Xiaohong; Bai, Long] Chongqing Univ, Chongqing Key Lab Met Addit Mfg 3D Printing, Chongqing 400044, Peoples R China; [Gong, Yu] Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China; [Wang, Ke; Zhang, Zhiqing] Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys MOE, Chongqing 400044, Peoples R China"

通信作者："Chen, XH; Bai, L (通讯作者)，Chongqing Univ, Coll Mech & Vehicle Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China.; Chen, XH; Bai, L (通讯作者)，Chongqing Univ, Chongqing Key Lab Met Addit Mfg 3D Printing, Chongqing 400044, Peoples R China."

来源：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

ESI学科分类：MATERIALS SCIENCE

WOS号：WOS:000795541100001

JCR分区：Q1

影响因子：6.4

年份：2022

卷号：18

期号：　

开始页：3240

结束页：3255

文献类型：Article

关键词：Triply periodic minimal surfaces; Lattice structures; Mechanical properties; Energy absorption; Damping ratio

摘要："Porosity is considered to be one of the key factors affecting the structural properties of porous lattices, but in fact, pore size also plays an important role, and it has great potential to adjust pore size and porosity independently to improve structural properties. In this work, by adjusting the sheet thickness of the triply periodic minimal surface (TPMS) lattice structures and adjusting the height of the single row structure according to linear and constant laws, the TPMS lattice structures with given porosity and adjustable pore size are designed, and the mechanical response is investigated. Based on preparing samples by Ti6Al4V laser powder bed fusion, the results of the tests show that the elastic modulus ranges of linear change TPMS (LC-TPMS) and constant TPMS (C-TPMS) lattice structures are 3625.6 MPa-4575.1 MPa and 3820.0 MPa-4509.1 MPa, respectively. In the plateau stage, the LC-TPMS lattice structures have a longer and more stable plateau stage, higher yield stress and better energy absorption capacity than the C-TPMS lattice structures. The maximum energy absorption difference is 62.7 MJ/mm(3) and the maximum energy absorption efficiency difference is 0.12. The LC-TPMS lattice structures can also obtain a larger damping ratio under larger compressive strain.(C) 2022 The Author(s). Published by Elsevier B.V.& nbsp;"

基金机构："National Natural Science Foundation of China [51975070, 62003060, 12172067, 11902054, 51971046]; Natural Science Foundation of Chongq-ing [cstc2021jcyj-msxmX0828]"

基金资助正文："Acknowledgments This work was supported by the National Natural Science Foundation of China [Grant No. 51975070, 62003060, 12172067, 11902054, 51971046] , Natural Science Foundation of Chongq-ing [Grant No. cstc2021jcyj-msxmX0828] . The Authors would like to thank Ms T. Gong for English language editing."