Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading
Selective laser sintering has been used to manufacture different structural variations of a pre-buckled circular honeycomb. The mechanical behaviour of these structures has been examined under both quasi-static and dynamic impact loading. Pre-buckled circular honeycombs with aspect ratios e = 0.8 an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-01-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521009230 |
| _version_ | 1798024738783625216 |
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| author | Rhosslyn Adams Scott Townsend Shwe Soe Peter Theobald |
| author_facet | Rhosslyn Adams Scott Townsend Shwe Soe Peter Theobald |
| author_sort | Rhosslyn Adams |
| collection | DOAJ |
| description | Selective laser sintering has been used to manufacture different structural variations of a pre-buckled circular honeycomb. The mechanical behaviour of these structures has been examined under both quasi-static and dynamic impact loading. Pre-buckled circular honeycombs with aspect ratios e = 0.8 and e = 0.6 were compared to a traditional, straight-walled honeycomb. It has been found that the mechanical behaviour of the honeycomb can be tailored to yield different mechanical responses. Principally, decreasing the aspect ratio reduced the stress at yield, as well as the total energy absorbed until densification, however, this alleviated the characteristic stress-softening response of traditional honeycombs under static and dynamic conditions. When subjected to multiple cycles of loading, a stabilised response was observed. The numerical response closely agreed with the experimental results. A simplified, periodic boundary condition model also closely agreed with the experimental results whilst alleviating computational run time by nominally 75%. The numerical full factorial parameter design sweep identified a broad range of mechanical behaviour. This represents a valuable tool to identify optimal design configurations for future impact mitigating applications. |
| first_indexed | 2024-04-11T18:08:37Z |
| format | Article |
| id | doaj.art-5ad8a6e2811e4398a91b1288c9b388c0 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-11T18:08:37Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-5ad8a6e2811e4398a91b1288c9b388c02022-12-22T04:10:15ZengElsevierMaterials & Design0264-12752022-01-01213110368Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loadingRhosslyn Adams0Scott Townsend1Shwe Soe2Peter Theobald3School of Engineering, Cardiff University, UKSchool of Engineering, Cardiff University, UKDepartment of Engineering, Design and Mathematics, University of the West of England, UKSchool of Engineering, Cardiff University, UK; Corresponding author.Selective laser sintering has been used to manufacture different structural variations of a pre-buckled circular honeycomb. The mechanical behaviour of these structures has been examined under both quasi-static and dynamic impact loading. Pre-buckled circular honeycombs with aspect ratios e = 0.8 and e = 0.6 were compared to a traditional, straight-walled honeycomb. It has been found that the mechanical behaviour of the honeycomb can be tailored to yield different mechanical responses. Principally, decreasing the aspect ratio reduced the stress at yield, as well as the total energy absorbed until densification, however, this alleviated the characteristic stress-softening response of traditional honeycombs under static and dynamic conditions. When subjected to multiple cycles of loading, a stabilised response was observed. The numerical response closely agreed with the experimental results. A simplified, periodic boundary condition model also closely agreed with the experimental results whilst alleviating computational run time by nominally 75%. The numerical full factorial parameter design sweep identified a broad range of mechanical behaviour. This represents a valuable tool to identify optimal design configurations for future impact mitigating applications.http://www.sciencedirect.com/science/article/pii/S0264127521009230HoneycombPre-buckledAdditive manufacturingFinite element analysisCompressionImpact |
| spellingShingle | Rhosslyn Adams Scott Townsend Shwe Soe Peter Theobald Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading Materials & Design Honeycomb Pre-buckled Additive manufacturing Finite element analysis Compression Impact |
| title | Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading |
| title_full | Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading |
| title_fullStr | Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading |
| title_full_unstemmed | Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading |
| title_short | Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading |
| title_sort | mechanical behaviour of additively manufactured elastomeric pre buckled honeycombs under quasi static and impact loading |
| topic | Honeycomb Pre-buckled Additive manufacturing Finite element analysis Compression Impact |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521009230 |
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