Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience
Auxetic re-entrant honeycomb (AREH) structures, consisting of a single soft or tough material, have long faced the challenge of balancing stiffness and rebound resilience. To achieve this balance, dual-material printing technology is employed to enhance shock absorption by combining layers of soft a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/11/2120 |
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| author | Jiajing Dong Songtao Ying Zhuohao Qiu Xixi Bao Chengyi Chu Hao Chen Jianjun Guo Aihua Sun |
| author_facet | Jiajing Dong Songtao Ying Zhuohao Qiu Xixi Bao Chengyi Chu Hao Chen Jianjun Guo Aihua Sun |
| author_sort | Jiajing Dong |
| collection | DOAJ |
| description | Auxetic re-entrant honeycomb (AREH) structures, consisting of a single soft or tough material, have long faced the challenge of balancing stiffness and rebound resilience. To achieve this balance, dual-material printing technology is employed to enhance shock absorption by combining layers of soft and tough materials. Additionally, a novel structure called the curved re-entrant honeycomb (CREH) structure has been introduced to improve stiffness. The selected materials for processing the composite structures of AREH and CREH are the rigid thermoplastic polymer polylactic acid (PLA) and the soft rubber material thermoplastic polyurethane (TPU), created utilizing fused deposition modeling (FDM) 3D printing technology. The influence of the material system and structure type on stress distribution and mechanical response was subsequently investigated. The results revealed that the dual-material printed structures demonstrated later entry into the densification phase compared to the single-material printed structures. Moreover, the soft material in the interlayer offered exceptional protection, thereby ensuring the overall integrity of the structure. These findings effectively serve as a reference for the design of dual-material re-entrant honeycombs. |
| first_indexed | 2024-03-09T16:36:22Z |
| format | Article |
| id | doaj.art-8db2f4ac1e724e67bd044bdce65d028b |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T16:36:22Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-8db2f4ac1e724e67bd044bdce65d028b2023-11-24T14:56:37ZengMDPI AGMicromachines2072-666X2023-11-011411212010.3390/mi14112120Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and ResilienceJiajing Dong0Songtao Ying1Zhuohao Qiu2Xixi Bao3Chengyi Chu4Hao Chen5Jianjun Guo6Aihua Sun7College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaKey Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaKey Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaKey Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaKey Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaAuxetic re-entrant honeycomb (AREH) structures, consisting of a single soft or tough material, have long faced the challenge of balancing stiffness and rebound resilience. To achieve this balance, dual-material printing technology is employed to enhance shock absorption by combining layers of soft and tough materials. Additionally, a novel structure called the curved re-entrant honeycomb (CREH) structure has been introduced to improve stiffness. The selected materials for processing the composite structures of AREH and CREH are the rigid thermoplastic polymer polylactic acid (PLA) and the soft rubber material thermoplastic polyurethane (TPU), created utilizing fused deposition modeling (FDM) 3D printing technology. The influence of the material system and structure type on stress distribution and mechanical response was subsequently investigated. The results revealed that the dual-material printed structures demonstrated later entry into the densification phase compared to the single-material printed structures. Moreover, the soft material in the interlayer offered exceptional protection, thereby ensuring the overall integrity of the structure. These findings effectively serve as a reference for the design of dual-material re-entrant honeycombs.https://www.mdpi.com/2072-666X/14/11/2120re-entrant honeycombfinite-element simulationdual-material printingenergy absorption |
| spellingShingle | Jiajing Dong Songtao Ying Zhuohao Qiu Xixi Bao Chengyi Chu Hao Chen Jianjun Guo Aihua Sun Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience Micromachines re-entrant honeycomb finite-element simulation dual-material printing energy absorption |
| title | Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience |
| title_full | Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience |
| title_fullStr | Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience |
| title_full_unstemmed | Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience |
| title_short | Advanced Design and Fabrication of Dual-Material Honeycombs for Improved Stiffness and Resilience |
| title_sort | advanced design and fabrication of dual material honeycombs for improved stiffness and resilience |
| topic | re-entrant honeycomb finite-element simulation dual-material printing energy absorption |
| url | https://www.mdpi.com/2072-666X/14/11/2120 |
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