Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin
Accurate replication of soft tissue properties is essential for the development of car crash test dummy skin to ensure the precision of biomechanical injury data. However, the intricacy of multi-layer soft tissue poses challenges in standardizing the development and testing of dummy skin materials t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Biomimetics |
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| Online Access: | https://www.mdpi.com/2313-7673/9/12/762 |
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| author | Yurun Li Zhixin Liu Cuiru Sun Xiaoya Zheng Guorui Du Xiaoshuang Wang Songchen Wang Weidong Liu |
| author_facet | Yurun Li Zhixin Liu Cuiru Sun Xiaoya Zheng Guorui Du Xiaoshuang Wang Songchen Wang Weidong Liu |
| author_sort | Yurun Li |
| collection | DOAJ |
| description | Accurate replication of soft tissue properties is essential for the development of car crash test dummy skin to ensure the precision of biomechanical injury data. However, the intricacy of multi-layer soft tissue poses challenges in standardizing the development and testing of dummy skin materials to emulate soft tissue properties. This study presents a comprehensive testing and analysis of the compressive mechanical properties of both single and multi-layered soft tissues and car crash dummy skin materials, aiming to enhance the biofidelity of dummy skin. We presented one-term Ogden hyperelastic models and generalized Maxwell viscoelastic models for single-layer and multi-layer soft tissues, as well as dummy skin materials. The comparative analysis results indicate that the existing dummy skin material fails to fully consider the strain-rate-dependent characteristic of soft tissue. Furthermore, dummy skin materials exhibited ~3 times shorter relaxation times and ~2–3 times lower stress decay rates compared to soft tissues, suggesting a less viscous nature. This study provides an accurate representation of the mechanics of soft tissue and dummy skin under quasi-static compressive loading. The findings are instrumental for the development of novel bionic skin materials or structures to more precisely replicate the biomechanical properties of soft tissues, thereby enhancing the accuracy and reliability of car crash test dummies. |
| format | Article |
| id | doaj-art-fb59ed9b334c45889cea5bd2c61dac0b |
| institution | Kabale University |
| issn | 2313-7673 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biomimetics |
| spelling | doaj-art-fb59ed9b334c45889cea5bd2c61dac0b2024-12-27T14:13:29ZengMDPI AGBiomimetics2313-76732024-12-0191276210.3390/biomimetics9120762Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy SkinYurun Li0Zhixin Liu1Cuiru Sun2Xiaoya Zheng3Guorui Du4Xiaoshuang Wang5Songchen Wang6Weidong Liu7Department of Mechanical Engineering, Tianjin University, No. 135 Yaguan Road, Tianjin 300354, ChinaChina Automotive Technology and Research Center, Tianjin 300300, ChinaDepartment of Mechanical Engineering, Tianjin University, No. 135 Yaguan Road, Tianjin 300354, ChinaDepartment of Mechanical Engineering, Tianjin University, No. 135 Yaguan Road, Tianjin 300354, ChinaDepartment of Mechanical Engineering, Tianjin University, No. 135 Yaguan Road, Tianjin 300354, ChinaDepartment of Mechanical Engineering, Tianjin University, No. 135 Yaguan Road, Tianjin 300354, ChinaDepartment of Mechanical Engineering, Tianjin University, No. 135 Yaguan Road, Tianjin 300354, ChinaChina Automotive Technology and Research Center, Tianjin 300300, ChinaAccurate replication of soft tissue properties is essential for the development of car crash test dummy skin to ensure the precision of biomechanical injury data. However, the intricacy of multi-layer soft tissue poses challenges in standardizing the development and testing of dummy skin materials to emulate soft tissue properties. This study presents a comprehensive testing and analysis of the compressive mechanical properties of both single and multi-layered soft tissues and car crash dummy skin materials, aiming to enhance the biofidelity of dummy skin. We presented one-term Ogden hyperelastic models and generalized Maxwell viscoelastic models for single-layer and multi-layer soft tissues, as well as dummy skin materials. The comparative analysis results indicate that the existing dummy skin material fails to fully consider the strain-rate-dependent characteristic of soft tissue. Furthermore, dummy skin materials exhibited ~3 times shorter relaxation times and ~2–3 times lower stress decay rates compared to soft tissues, suggesting a less viscous nature. This study provides an accurate representation of the mechanics of soft tissue and dummy skin under quasi-static compressive loading. The findings are instrumental for the development of novel bionic skin materials or structures to more precisely replicate the biomechanical properties of soft tissues, thereby enhancing the accuracy and reliability of car crash test dummies.https://www.mdpi.com/2313-7673/9/12/762soft tissue mechanicscar crush dummy skinviscoelastic propertiesOgden model |
| spellingShingle | Yurun Li Zhixin Liu Cuiru Sun Xiaoya Zheng Guorui Du Xiaoshuang Wang Songchen Wang Weidong Liu Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin Biomimetics soft tissue mechanics car crush dummy skin viscoelastic properties Ogden model |
| title | Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin |
| title_full | Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin |
| title_fullStr | Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin |
| title_full_unstemmed | Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin |
| title_short | Quasi-Static Mechanical Biomimetics Evaluation of Car Crash Dummy Skin |
| title_sort | quasi static mechanical biomimetics evaluation of car crash dummy skin |
| topic | soft tissue mechanics car crush dummy skin viscoelastic properties Ogden model |
| url | https://www.mdpi.com/2313-7673/9/12/762 |
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