Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting
Triply periodic minimal surface (TPMS) structures have unique geometries and excellent mechanical properties, which have attracted much attention in many fields. However, the relationship between different filling forms and different directions of functionally graded TPMS structures on energy absorp...
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MDPI AG
2024-03-01
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| Online Access: | https://www.mdpi.com/2076-3417/14/5/2064 |
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| author | Jian Song Mengkang Wang Dongming Li Jun Zhang |
| author_facet | Jian Song Mengkang Wang Dongming Li Jun Zhang |
| author_sort | Jian Song |
| collection | DOAJ |
| description | Triply periodic minimal surface (TPMS) structures have unique geometries and excellent mechanical properties, which have attracted much attention in many fields. However, the relationship between different filling forms and different directions of functionally graded TPMS structures on energy absorption has not been fully studied. In this study, a functionally graded strategy was proposed to investigate the effect of filling form and direction gradient on the energy absorption of TPMS structures. The design of functionally graded Gyroid and Diamond TPMS cellular structures with multiple forms was characterized, and the structures were fabricated using additive manufacturing technology. The effects of uniformity and different directional gradients on the deformation and energy absorption properties of the structures were studied experimentally and numerically. According to the compression test results, it was found that different filling forms of the TPMS structure behave differently in terms of yield plateau and deformation pattern, and the sheet structures can develop a better deformation pattern to enhance energy absorption capacity. Functionally graded sheet Diamond TPMS cellular structures along the compression direction exhibit a 32% reduction in initial peak force, providing more advantages in structural deformation and energy absorption. More closely, it is possible to further reduce the initial peak force, delay the densification point, and thus increase the energy absorption capacity by designing functionally graded sheet Diamond TPMS based cellular structures. The results of this study provide valuable guidance for the design of high-performance impact-protection components. |
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| language | English |
| last_indexed | 2024-04-25T00:34:31Z |
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| spelling | doaj.art-90a5638ca40e4f30ae47f41e66092f492024-03-12T16:39:59ZengMDPI AGApplied Sciences2076-34172024-03-01145206410.3390/app14052064Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser MeltingJian Song0Mengkang Wang1Dongming Li2Jun Zhang3School of Locomotive and Rolling Stock Engineering, Dalian Jiaotong University, Dalian 116028, ChinaSchool of Locomotive and Rolling Stock Engineering, Dalian Jiaotong University, Dalian 116028, ChinaSchool of CRRC, Dalian Jiaotong University, Dalian 116028, ChinaSchool of Locomotive and Rolling Stock Engineering, Dalian Jiaotong University, Dalian 116028, ChinaTriply periodic minimal surface (TPMS) structures have unique geometries and excellent mechanical properties, which have attracted much attention in many fields. However, the relationship between different filling forms and different directions of functionally graded TPMS structures on energy absorption has not been fully studied. In this study, a functionally graded strategy was proposed to investigate the effect of filling form and direction gradient on the energy absorption of TPMS structures. The design of functionally graded Gyroid and Diamond TPMS cellular structures with multiple forms was characterized, and the structures were fabricated using additive manufacturing technology. The effects of uniformity and different directional gradients on the deformation and energy absorption properties of the structures were studied experimentally and numerically. According to the compression test results, it was found that different filling forms of the TPMS structure behave differently in terms of yield plateau and deformation pattern, and the sheet structures can develop a better deformation pattern to enhance energy absorption capacity. Functionally graded sheet Diamond TPMS cellular structures along the compression direction exhibit a 32% reduction in initial peak force, providing more advantages in structural deformation and energy absorption. More closely, it is possible to further reduce the initial peak force, delay the densification point, and thus increase the energy absorption capacity by designing functionally graded sheet Diamond TPMS based cellular structures. The results of this study provide valuable guidance for the design of high-performance impact-protection components.https://www.mdpi.com/2076-3417/14/5/2064functionally graded TPMSenergy absorptionselective laser meltingadditive manufacturing |
| spellingShingle | Jian Song Mengkang Wang Dongming Li Jun Zhang Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting Applied Sciences functionally graded TPMS energy absorption selective laser melting additive manufacturing |
| title | Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting |
| title_full | Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting |
| title_fullStr | Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting |
| title_full_unstemmed | Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting |
| title_short | Deformation and Energy Absorption Performance of Functionally Graded TPMS Structures Fabricated by Selective Laser Melting |
| title_sort | deformation and energy absorption performance of functionally graded tpms structures fabricated by selective laser melting |
| topic | functionally graded TPMS energy absorption selective laser melting additive manufacturing |
| url | https://www.mdpi.com/2076-3417/14/5/2064 |
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