Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions
This study introduces an innovative annular sealing groove design inspired by the hierarchical structure of octopus suckers, addressing the limitations of conventional seals under extreme conditions in aerospace engineering. Using finite element analysis, eight bionic configurations with varying gro...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Biomimetics |
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| Online Access: | https://www.mdpi.com/2313-7673/10/5/322 |
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| author | Zhipeng Pan Shijun Xu Xiang Guan Zhihong Wang Zhenghai Qi Xiangrui Ye Jianyang Dong Yongming Yao Zhengzhi Mu |
| author_facet | Zhipeng Pan Shijun Xu Xiang Guan Zhihong Wang Zhenghai Qi Xiangrui Ye Jianyang Dong Yongming Yao Zhengzhi Mu |
| author_sort | Zhipeng Pan |
| collection | DOAJ |
| description | This study introduces an innovative annular sealing groove design inspired by the hierarchical structure of octopus suckers, addressing the limitations of conventional seals under extreme conditions in aerospace engineering. Using finite element analysis, eight bionic configurations with varying groove parameters (width, depth, number) were systematically evaluated under cryogenic (−196.25 °C) and high-pressure (2 MPa) scenarios. Results show that the optimized bionic6 configuration (seven grooves, 0.4 mm width, 0.4 mm depth) achieved a 21.71% improvement in average von Mises stress compared to the original design, demonstrating enhanced leakage resistance. Parameter interaction analysis revealed groove number as the most significant factor affecting performance, followed by width, while depth showed minimal influence. The hierarchical groove architecture effectively mimicked the multi-level sealing mechanism of octopus suckers, reducing leakage paths and improving adaptability to irregular surfaces. This work bridges biological inspiration and engineering application, providing a scalable solution for extreme environments. The identified optimal parameters lay a theoretical foundation for designing high-performance seals in aerospace, cryogenic storage, and advanced manufacturing. |
| format | Article |
| id | doaj-art-56f85eb870a5441ab8b8b4b7bf7f631d |
| institution | Kabale University |
| issn | 2313-7673 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomimetics |
| spelling | doaj-art-56f85eb870a5441ab8b8b4b7bf7f631d2025-08-20T03:47:52ZengMDPI AGBiomimetics2313-76732025-05-0110532210.3390/biomimetics10050322Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme ConditionsZhipeng Pan0Shijun Xu1Xiang Guan2Zhihong Wang3Zhenghai Qi4Xiangrui Ye5Jianyang Dong6Yongming Yao7Zhengzhi Mu8School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaShanghai Aerospace Equipment Manufacturer Co., Ltd., Shanghai 200245, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaSchool of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, ChinaThis study introduces an innovative annular sealing groove design inspired by the hierarchical structure of octopus suckers, addressing the limitations of conventional seals under extreme conditions in aerospace engineering. Using finite element analysis, eight bionic configurations with varying groove parameters (width, depth, number) were systematically evaluated under cryogenic (−196.25 °C) and high-pressure (2 MPa) scenarios. Results show that the optimized bionic6 configuration (seven grooves, 0.4 mm width, 0.4 mm depth) achieved a 21.71% improvement in average von Mises stress compared to the original design, demonstrating enhanced leakage resistance. Parameter interaction analysis revealed groove number as the most significant factor affecting performance, followed by width, while depth showed minimal influence. The hierarchical groove architecture effectively mimicked the multi-level sealing mechanism of octopus suckers, reducing leakage paths and improving adaptability to irregular surfaces. This work bridges biological inspiration and engineering application, providing a scalable solution for extreme environments. The identified optimal parameters lay a theoretical foundation for designing high-performance seals in aerospace, cryogenic storage, and advanced manufacturing.https://www.mdpi.com/2313-7673/10/5/322biomimetic sealingoctopus suckerfinite element analysisannular sealing groovehierarchical sealing structure |
| spellingShingle | Zhipeng Pan Shijun Xu Xiang Guan Zhihong Wang Zhenghai Qi Xiangrui Ye Jianyang Dong Yongming Yao Zhengzhi Mu Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions Biomimetics biomimetic sealing octopus sucker finite element analysis annular sealing groove hierarchical sealing structure |
| title | Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions |
| title_full | Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions |
| title_fullStr | Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions |
| title_full_unstemmed | Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions |
| title_short | Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions |
| title_sort | octopus inspired biomimetic annular sealing grooves design and performance optimization under extreme conditions |
| topic | biomimetic sealing octopus sucker finite element analysis annular sealing groove hierarchical sealing structure |
| url | https://www.mdpi.com/2313-7673/10/5/322 |
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