An investigation into reinforced and functionally graded lattice structures
Lattice structures are regarded as excellent candidates for use in lightweight energy absorbing applications, such as crash protection. In this paper we investigate the crushing behaviour, mechanical properties and energy absorption of lattices made by an additive manufacturing (AM) process. Two typ...
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SAGE Publications
2016
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| Online Access: | https://eprints.nottingham.ac.uk/31970/ |
| _version_ | 1848794307962601472 |
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| author | Maskery, Ian Hussey, Alexandra Panesar, Ajit Aremu, Adedeji Tuck, Christopher Ashcroft, Ian Hague, Richard J.M. |
| author_facet | Maskery, Ian Hussey, Alexandra Panesar, Ajit Aremu, Adedeji Tuck, Christopher Ashcroft, Ian Hague, Richard J.M. |
| author_sort | Maskery, Ian |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Lattice structures are regarded as excellent candidates for use in lightweight energy absorbing applications, such as crash protection. In this paper we investigate the crushing behaviour, mechanical properties and energy absorption of lattices made by an additive manufacturing (AM) process. Two types of lattice were examined; body-centred-cubic (BCC) and a reinforced variant called BCCz. The lattices were subject to compressive loads in two orthogonal directions, allowing an assessment of their mechanical anisotropy to be made. We also examined functionally graded versions of these lattices, which featured a density gradient along one direction. The graded structures exhibited distinct crushing behaviour, with a sequential collapse of cellular layers preceding full densification. For the BCCz lattice, the graded structures were able to absorb around 114% more energy per unit volume than their non-graded counterparts before full densification, 1371 +or- 9 kJ/m3 vs. 640 +or- 10 kJ/m3. This highlights the strong potential for functionally graded lattices to be used in energy absorbing applications. Finally, we determined several of the Gibson-Ashby coefficients relating the mechanical properties of lattice structures to their density; these are crucial in establishing the constitutive models required for effective lattice design. These results improve the current understanding of AM lattices, and will enable the design of sophisticated, functional, lightweight components in the future. |
| first_indexed | 2025-11-14T19:14:07Z |
| format | Article |
| id | nottingham-31970 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:14:07Z |
| publishDate | 2016 |
| publisher | SAGE Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-319702020-05-04T17:41:19Z https://eprints.nottingham.ac.uk/31970/ An investigation into reinforced and functionally graded lattice structures Maskery, Ian Hussey, Alexandra Panesar, Ajit Aremu, Adedeji Tuck, Christopher Ashcroft, Ian Hague, Richard J.M. Lattice structures are regarded as excellent candidates for use in lightweight energy absorbing applications, such as crash protection. In this paper we investigate the crushing behaviour, mechanical properties and energy absorption of lattices made by an additive manufacturing (AM) process. Two types of lattice were examined; body-centred-cubic (BCC) and a reinforced variant called BCCz. The lattices were subject to compressive loads in two orthogonal directions, allowing an assessment of their mechanical anisotropy to be made. We also examined functionally graded versions of these lattices, which featured a density gradient along one direction. The graded structures exhibited distinct crushing behaviour, with a sequential collapse of cellular layers preceding full densification. For the BCCz lattice, the graded structures were able to absorb around 114% more energy per unit volume than their non-graded counterparts before full densification, 1371 +or- 9 kJ/m3 vs. 640 +or- 10 kJ/m3. This highlights the strong potential for functionally graded lattices to be used in energy absorbing applications. Finally, we determined several of the Gibson-Ashby coefficients relating the mechanical properties of lattice structures to their density; these are crucial in establishing the constitutive models required for effective lattice design. These results improve the current understanding of AM lattices, and will enable the design of sophisticated, functional, lightweight components in the future. SAGE Publications 2016-03-18 Article PeerReviewed Maskery, Ian, Hussey, Alexandra, Panesar, Ajit, Aremu, Adedeji, Tuck, Christopher, Ashcroft, Ian and Hague, Richard J.M. (2016) An investigation into reinforced and functionally graded lattice structures. Journal of Cellular Plastics . ISSN 0021-955X selective laser sintering additive manufacture lattice functional grading energy absorption mechanical testing http://cel.sagepub.com/content/early/2016/03/18/0021955X16639035.abstract doi:10.1177/0021955X16639035 doi:10.1177/0021955X16639035 |
| spellingShingle | selective laser sintering additive manufacture lattice functional grading energy absorption mechanical testing Maskery, Ian Hussey, Alexandra Panesar, Ajit Aremu, Adedeji Tuck, Christopher Ashcroft, Ian Hague, Richard J.M. An investigation into reinforced and functionally graded lattice structures |
| title | An investigation into reinforced and functionally graded lattice structures |
| title_full | An investigation into reinforced and functionally graded lattice structures |
| title_fullStr | An investigation into reinforced and functionally graded lattice structures |
| title_full_unstemmed | An investigation into reinforced and functionally graded lattice structures |
| title_short | An investigation into reinforced and functionally graded lattice structures |
| title_sort | investigation into reinforced and functionally graded lattice structures |
| topic | selective laser sintering additive manufacture lattice functional grading energy absorption mechanical testing |
| url | https://eprints.nottingham.ac.uk/31970/ https://eprints.nottingham.ac.uk/31970/ https://eprints.nottingham.ac.uk/31970/ |