PMID- 36676206 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230201 IS - 1996-1944 (Print) IS - 1996-1944 (Electronic) IS - 1996-1944 (Linking) VI - 16 IP - 2 DP - 2023 Jan 4 TI - Mechanical Behavior of Al-Si10-Mg P-TPMS Structure Fabricated by Selective Laser Melting and a Unified Mathematical Model with Geometrical Parameter. LID - 10.3390/ma16020468 [doi] LID - 468 AB - Compared with the traditional lattice structure, the triply periodic minimal surface (TPMS) structure can avoid stress concentration effectively. Here, it is promising in the fields of lightweight and energy absorption. However, the number of structural parameters and mechanical properties of the TPMS structure is plentiful, and the relationship between them is unclassified. In this paper, for the first time, a unified mathematical model was proposed to establish the relationship between TPMS structural design parameters and mechanical properties. Fifteen primitive models were designed by changing the structural parameters (level-set value C and thickness T) and manufacturing by selective laser melting. The geometric defects and surface quality of the structures were explored by optical microscope and scanning electron microscopy (SEM). The mechanical properties were investigated by quasi-static compression test and finite element simulation. The influence of building direction on structural mechanical behavior (failure mode, stress-strain curve) was studied. The real mechanical properties (Young's modulus and plateau stress) of the structure could be predicted according to different C and T combinations. Finally, the energy absorption characteristics were explored. The results showed that when the C value is 0.6 in the range of 0-0.6, the energy absorption performance of the structure is at the maximum level. FAU - Zhang, Xiaonan AU - Zhang X AUID- ORCID: 0000-0001-9821-2551 AD - Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China. FAU - Xie, Xiangyu AU - Xie X AD - Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China. FAU - Li, Yongjing AU - Li Y AD - Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China. FAU - Li, Bin AU - Li B AD - School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, China. FAU - Yan, Shilin AU - Yan S AD - Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China. FAU - Wen, Pin AU - Wen P AD - Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China. LA - eng GR - NSFC 11902232/National Natural Science Foundation of China/ GR - 2021CFB292/Natural Science Foundation of Hubei Province/ GR - 225214002/Graduate Independent Innovation Fund/ PT - Journal Article DEP - 20230104 PL - Switzerland TA - Materials (Basel) JT - Materials (Basel, Switzerland) JID - 101555929 PMC - PMC9861189 OTO - NOTNLM OT - energy absorption OT - mathematical model OT - mechanical properties OT - selective laser melting OT - triply periodic minimal surface COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/01/22 06:00 MHDA- 2023/01/22 06:01 PMCR- 2023/01/04 CRDT- 2023/01/21 01:34 PHST- 2022/11/30 00:00 [received] PHST- 2022/12/21 00:00 [revised] PHST- 2022/12/29 00:00 [accepted] PHST- 2023/01/21 01:34 [entrez] PHST- 2023/01/22 06:00 [pubmed] PHST- 2023/01/22 06:01 [medline] PHST- 2023/01/04 00:00 [pmc-release] AID - ma16020468 [pii] AID - materials-16-00468 [pii] AID - 10.3390/ma16020468 [doi] PST - epublish SO - Materials (Basel). 2023 Jan 4;16(2):468. doi: 10.3390/ma16020468.