Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications
Inspired by nature's self-similar designs, novel honeycomb-spiderweb based self-similar hybrid cellular structures are proposed here for efficient energy absorption in impact applications. The energy absorption is enhanced by optimizing the geometry and topology for a given mass. The proposed h...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-01-01
|
| Series: | Defence Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914724001570 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832590978286878720 |
|---|---|
| author | K. Tewari M.K. Pandit M.M. Mahapatra P.R. Budarapu |
| author_facet | K. Tewari M.K. Pandit M.M. Mahapatra P.R. Budarapu |
| author_sort | K. Tewari |
| collection | DOAJ |
| description | Inspired by nature's self-similar designs, novel honeycomb-spiderweb based self-similar hybrid cellular structures are proposed here for efficient energy absorption in impact applications. The energy absorption is enhanced by optimizing the geometry and topology for a given mass. The proposed hybrid cellular structure is arrived after a thorough analysis of topologically enhanced self-similar structures. The optimized cell designs are rigorously tested considering dynamic loads involving crush and high-velocity bullet impact. Furthermore, the influence of thickness, radial connectivity, and order of patterning at the unit cell level are also investigated. The maximum crushing efficiency attained is found to be more than 95%, which is significantly higher than most existing traditional designs. Later on, the first and second-order hierarchical self-similar unit cell designs developed during crush analysis are used to prepare the cores for sandwich structures. Impact tests are performed on the developed sandwich structures using the standard 9-mm parabellum. The influence of multistaging on impact resistance is also investigated by maintaining a constant total thickness and mass of the sandwich structure. Moreover, in order to avoid layer-wise weak zones and hence, attain a uniform out-of-plane impact strength, off-setting the designs in each stage is proposed. The sandwich structures with first and second-order self-similar hybrid cores are observed to withstand impact velocities as high as 170 m/s and 270 m/s, respectively. |
| format | Article |
| id | doaj-art-b5a894a18aab409ca58ba8a8b357ee8c |
| institution | Kabale University |
| issn | 2214-9147 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj-art-b5a894a18aab409ca58ba8a8b357ee8c2025-01-23T05:26:46ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-01-0143182200Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applicationsK. Tewari0M.K. Pandit1M.M. Mahapatra2P.R. Budarapu3School of Mechanical Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, 752050, IndiaSchool of Mechanical Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, 752050, IndiaSchool of Mechanical Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, 752050, IndiaCorresponding author.; School of Mechanical Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, 752050, IndiaInspired by nature's self-similar designs, novel honeycomb-spiderweb based self-similar hybrid cellular structures are proposed here for efficient energy absorption in impact applications. The energy absorption is enhanced by optimizing the geometry and topology for a given mass. The proposed hybrid cellular structure is arrived after a thorough analysis of topologically enhanced self-similar structures. The optimized cell designs are rigorously tested considering dynamic loads involving crush and high-velocity bullet impact. Furthermore, the influence of thickness, radial connectivity, and order of patterning at the unit cell level are also investigated. The maximum crushing efficiency attained is found to be more than 95%, which is significantly higher than most existing traditional designs. Later on, the first and second-order hierarchical self-similar unit cell designs developed during crush analysis are used to prepare the cores for sandwich structures. Impact tests are performed on the developed sandwich structures using the standard 9-mm parabellum. The influence of multistaging on impact resistance is also investigated by maintaining a constant total thickness and mass of the sandwich structure. Moreover, in order to avoid layer-wise weak zones and hence, attain a uniform out-of-plane impact strength, off-setting the designs in each stage is proposed. The sandwich structures with first and second-order self-similar hybrid cores are observed to withstand impact velocities as high as 170 m/s and 270 m/s, respectively.http://www.sciencedirect.com/science/article/pii/S2214914724001570Sandwich structuresHoneycomb-spider web inspiredSelf-similar hierarchyCrush analysisHigh-velocity impactStrong and weak zones |
| spellingShingle | K. Tewari M.K. Pandit M.M. Mahapatra P.R. Budarapu Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications Defence Technology Sandwich structures Honeycomb-spider web inspired Self-similar hierarchy Crush analysis High-velocity impact Strong and weak zones |
| title | Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications |
| title_full | Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications |
| title_fullStr | Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications |
| title_full_unstemmed | Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications |
| title_short | Honeycomb-spiderweb-inspired self-similar hybrid cellular structures for impact applications |
| title_sort | honeycomb spiderweb inspired self similar hybrid cellular structures for impact applications |
| topic | Sandwich structures Honeycomb-spider web inspired Self-similar hierarchy Crush analysis High-velocity impact Strong and weak zones |
| url | http://www.sciencedirect.com/science/article/pii/S2214914724001570 |
| work_keys_str_mv | AT ktewari honeycombspiderwebinspiredselfsimilarhybridcellularstructuresforimpactapplications AT mkpandit honeycombspiderwebinspiredselfsimilarhybridcellularstructuresforimpactapplications AT mmmahapatra honeycombspiderwebinspiredselfsimilarhybridcellularstructuresforimpactapplications AT prbudarapu honeycombspiderwebinspiredselfsimilarhybridcellularstructuresforimpactapplications |