Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization
The demand for lightweight yet mechanically robust components has driven the exploration of lattice structures, which offer superior weight-to-strength ratios compared to traditional bulk materials. This study investigates the elastic–plastic behaviour of Polyamide 12 (PA12) lattice structures manuf...
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| Language: | English |
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425006477 |
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| author | L. Romanelli C. Santus I. Senegaglia F. Tamburrino M. Controzzi A. Corrado M. Perini D. Kumar R. De Biasi M. Benedetti |
| author_facet | L. Romanelli C. Santus I. Senegaglia F. Tamburrino M. Controzzi A. Corrado M. Perini D. Kumar R. De Biasi M. Benedetti |
| author_sort | L. Romanelli |
| collection | DOAJ |
| description | The demand for lightweight yet mechanically robust components has driven the exploration of lattice structures, which offer superior weight-to-strength ratios compared to traditional bulk materials. This study investigates the elastic–plastic behaviour of Polyamide 12 (PA12) lattice structures manufactured via multi jet fusion (MJF). The research combines experimental, numerical, and theoretical approaches to develop a robust framework for the mechanical homogenization of these structures. Tensile tests were performed on bulk and graded lattice specimens to characterize their constitutive behaviour. A simplified homogenization method, integrating periodic boundary conditions (PBCs) with the Hill yielding criterion and Levy-Mises plastic flow rule, was developed to model the anisotropic plastic response of representative volume elements (RVEs). This framework accounts for direction-dependent hardening, enabling efficient prediction of lattice behaviour under complex loading scenarios. Numerical simulations of homogenized RVEs reflected experimental results with a good level of accuracy, validating the model’s ability to capture both elastic and plastic deformation regimes. Findings highlight the potential of the proposed methodology for structural optimization and mechanical performance prediction in applications requiring lightweight and durable materials, such as automotive, aerospace, and biomedical devices. |
| format | Article |
| id | doaj-art-b88b0dfdb82646e296df9c3cb41436de |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-b88b0dfdb82646e296df9c3cb41436de2025-08-20T03:17:44ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01362977299310.1016/j.jmrt.2025.03.137Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenizationL. Romanelli0C. Santus1I. Senegaglia2F. Tamburrino3M. Controzzi4A. Corrado5M. Perini6D. Kumar7R. De Biasi8M. Benedetti9Department of Civil and Industrial Engineering, University of Pisa, Pisa, Italy; Corresponding author.Department of Civil and Industrial Engineering, University of Pisa, Pisa, ItalyDepartment of Civil and Industrial Engineering, University of Pisa, Pisa, ItalyDepartment of Civil and Industrial Engineering, University of Pisa, Pisa, ItalyThe BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, ItalyDepartment of Industrial Engineering, University of Trento, Trento, ItalyProM Facility of Trentino Sviluppo S.p.A., Rovereto, ItalyDepartment of Mechanical Engineering, Indian Institute of Technology (BHU), Varanasi, IndiaDepartment of Chemical Engineering Materials Environment, Sapienza University, Roma, Italy; Department of Industrial Engineering, University of Trento, Trento, ItalyDepartment of Industrial Engineering, University of Trento, Trento, ItalyThe demand for lightweight yet mechanically robust components has driven the exploration of lattice structures, which offer superior weight-to-strength ratios compared to traditional bulk materials. This study investigates the elastic–plastic behaviour of Polyamide 12 (PA12) lattice structures manufactured via multi jet fusion (MJF). The research combines experimental, numerical, and theoretical approaches to develop a robust framework for the mechanical homogenization of these structures. Tensile tests were performed on bulk and graded lattice specimens to characterize their constitutive behaviour. A simplified homogenization method, integrating periodic boundary conditions (PBCs) with the Hill yielding criterion and Levy-Mises plastic flow rule, was developed to model the anisotropic plastic response of representative volume elements (RVEs). This framework accounts for direction-dependent hardening, enabling efficient prediction of lattice behaviour under complex loading scenarios. Numerical simulations of homogenized RVEs reflected experimental results with a good level of accuracy, validating the model’s ability to capture both elastic and plastic deformation regimes. Findings highlight the potential of the proposed methodology for structural optimization and mechanical performance prediction in applications requiring lightweight and durable materials, such as automotive, aerospace, and biomedical devices.http://www.sciencedirect.com/science/article/pii/S2238785425006477Polyamide 12Multi jet fusionLattice structuresHomogenizationPeriodic boundary conditionsAnisotropic plastic behaviour |
| spellingShingle | L. Romanelli C. Santus I. Senegaglia F. Tamburrino M. Controzzi A. Corrado M. Perini D. Kumar R. De Biasi M. Benedetti Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization Journal of Materials Research and Technology Polyamide 12 Multi jet fusion Lattice structures Homogenization Periodic boundary conditions Anisotropic plastic behaviour |
| title | Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization |
| title_full | Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization |
| title_fullStr | Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization |
| title_full_unstemmed | Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization |
| title_short | Lightweight design of polymeric thin-walled components: Latticization and elastic–plastic homogenization |
| title_sort | lightweight design of polymeric thin walled components latticization and elastic plastic homogenization |
| topic | Polyamide 12 Multi jet fusion Lattice structures Homogenization Periodic boundary conditions Anisotropic plastic behaviour |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425006477 |
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