Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures
Advances in additive manufacturing triggered a paradigm shift in the design of functional components allowing for complex topology-driven cellular lattices to be incorporated for the aim of reducing weight, enhancing multi-functionality, and facilitating manufacturability. In this paper, the compres...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520306353 |
| _version_ | 1811296164559978496 |
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| author | Aliaa M. Abou-Ali Oraib Al-Ketan Dong-Wook Lee Reza Rowshan Rashid K. Abu Al-Rub |
| author_facet | Aliaa M. Abou-Ali Oraib Al-Ketan Dong-Wook Lee Reza Rowshan Rashid K. Abu Al-Rub |
| author_sort | Aliaa M. Abou-Ali |
| collection | DOAJ |
| description | Advances in additive manufacturing triggered a paradigm shift in the design of functional components allowing for complex topology-driven cellular lattices to be incorporated for the aim of reducing weight, enhancing multi-functionality, and facilitating manufacturability. In this paper, the compressive mechanical behavior of different polymeric lattices based on triply periodic minimal surfaces (TPMS) are investigated both experimentally and computationally. The behavior of two classes of TPMS lattices are investigated; sheet- and ligament-based lattices. Samples are fabricated using the laser powder bed fusion technique, selective laser sintering, and characterized using micro-Computed Tomography (micro-CT) and Scanning Electron Microscopy (SEM). A finite-deformation hyperelastic-viscoplastic-damage constitutive model is calibrated and employed to capture the full compressive behavior of lattices. The computational results are compared to and validated against corresponding experimental results. Results show that sheet-based polymeric TPMS lattices exhibit a stretching-dominated mode of deformation and prove to have superior stiffness and strength as compared to TPMS ligament-based lattices. The numerical simulations are in good agreement with experimental results for ligament-based lattices while significant deviation from experimental results is observed for the sheet-based lattices which is attributed to uncertainty in measuring the actual relative density and relatively higher manufacturing defects. |
| first_indexed | 2024-04-13T05:44:27Z |
| format | Article |
| id | doaj.art-ece92415fd6940b383b8b51375f65433 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-13T05:44:27Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-ece92415fd6940b383b8b51375f654332022-12-22T03:00:00ZengElsevierMaterials & Design0264-12752020-11-01196109100Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architecturesAliaa M. Abou-Ali0Oraib Al-Ketan1Dong-Wook Lee2Reza Rowshan3Rashid K. Abu Al-Rub4Advanced Digital & Additive Manufacturing Center, Khalifa University, Abu Dhabi, United Arab Emirates; Mechanical Engineering Department, Khalifa University, Abu Dhabi, United Arab Emirates; Production Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, EgyptCore Technology Platforms Division, New York University Abu Dhabi, Abu Dhabi, United Arab EmiratesAdvanced Digital & Additive Manufacturing Center, Khalifa University, Abu Dhabi, United Arab Emirates; Mechanical Engineering Department, Khalifa University, Abu Dhabi, United Arab EmiratesCore Technology Platforms Division, New York University Abu Dhabi, Abu Dhabi, United Arab EmiratesAdvanced Digital & Additive Manufacturing Center, Khalifa University, Abu Dhabi, United Arab Emirates; Mechanical Engineering Department, Khalifa University, Abu Dhabi, United Arab Emirates; Aerospace Engineering Department, Khalifa University, Abu Dhabi, United Arab Emirates; Corresponding author at: Advanced Digital & Additive Manufacturing Center, Khalifa University, Abu Dhabi, United Arab Emirates.Advances in additive manufacturing triggered a paradigm shift in the design of functional components allowing for complex topology-driven cellular lattices to be incorporated for the aim of reducing weight, enhancing multi-functionality, and facilitating manufacturability. In this paper, the compressive mechanical behavior of different polymeric lattices based on triply periodic minimal surfaces (TPMS) are investigated both experimentally and computationally. The behavior of two classes of TPMS lattices are investigated; sheet- and ligament-based lattices. Samples are fabricated using the laser powder bed fusion technique, selective laser sintering, and characterized using micro-Computed Tomography (micro-CT) and Scanning Electron Microscopy (SEM). A finite-deformation hyperelastic-viscoplastic-damage constitutive model is calibrated and employed to capture the full compressive behavior of lattices. The computational results are compared to and validated against corresponding experimental results. Results show that sheet-based polymeric TPMS lattices exhibit a stretching-dominated mode of deformation and prove to have superior stiffness and strength as compared to TPMS ligament-based lattices. The numerical simulations are in good agreement with experimental results for ligament-based lattices while significant deviation from experimental results is observed for the sheet-based lattices which is attributed to uncertainty in measuring the actual relative density and relatively higher manufacturing defects.http://www.sciencedirect.com/science/article/pii/S0264127520306353Polymer additive manufacturingTriply periodic minimal surfaceCellular materialsFinite element modelingSelective laser sintering |
| spellingShingle | Aliaa M. Abou-Ali Oraib Al-Ketan Dong-Wook Lee Reza Rowshan Rashid K. Abu Al-Rub Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures Materials & Design Polymer additive manufacturing Triply periodic minimal surface Cellular materials Finite element modeling Selective laser sintering |
| title | Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures |
| title_full | Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures |
| title_fullStr | Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures |
| title_full_unstemmed | Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures |
| title_short | Mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures |
| title_sort | mechanical behavior of polymeric selective laser sintered ligament and sheet based lattices of triply periodic minimal surface architectures |
| topic | Polymer additive manufacturing Triply periodic minimal surface Cellular materials Finite element modeling Selective laser sintering |
| url | http://www.sciencedirect.com/science/article/pii/S0264127520306353 |
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