Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling
Polyurea is widely employed as a protective coating in many fields because of its superior ability to improve the anti-blast and anti-impact capability of structures. In this study, the mechanical properties of polyurea XS-350 were investigated via systematic experimentation over a wide range of str...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2019-12-01
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| Series: | Defence Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914718306469 |
| _version_ | 1818878688591085568 |
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| author | Hao Wang Ximin Deng Haijun Wu Aiguo Pi Jinzhu Li Fenglei Huang |
| author_facet | Hao Wang Ximin Deng Haijun Wu Aiguo Pi Jinzhu Li Fenglei Huang |
| author_sort | Hao Wang |
| collection | DOAJ |
| description | Polyurea is widely employed as a protective coating in many fields because of its superior ability to improve the anti-blast and anti-impact capability of structures. In this study, the mechanical properties of polyurea XS-350 were investigated via systematic experimentation over a wide range of strain rates (0.001–7000 s−1) by using an MTS, Instron VHS, and split-Hopkinson bars. The stress-strain behavior of polyurea was obtained for various strain rates, and the effects of strain rate on the primary mechanical properties were analyzed. Additionally, a modified rate-dependent constitutive model is proposed based on the nine-parameter Mooney-Rivlin model. The results show that the stress-strain curves can be divided into three distinct regions: the linear-elastic stage, the highly elastic stage, and an approximate linear region terminating in fracture. The mechanical properties of the polyurea material were found to be highly dependent on the strain rate. Furthermore, a comparison between model predictions and the experimental stress-strain curves demonstrated that the proposed model can characterize the mechanical properties of polyurea over a wide range of strain rates. Keywords: Polyurea, Strain rate effect, Dynamic mechanical properties, Constitutive model |
| first_indexed | 2024-12-19T14:18:09Z |
| format | Article |
| id | doaj.art-a580de82f95c4c23878c8f7c6936db48 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-12-19T14:18:09Z |
| publishDate | 2019-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-a580de82f95c4c23878c8f7c6936db482022-12-21T20:17:55ZengKeAi Communications Co., Ltd.Defence Technology2214-91472019-12-01156875884Investigating the dynamic mechanical behaviors of polyurea through experimentation and modelingHao Wang0Ximin Deng1Haijun Wu2Aiguo Pi3Jinzhu Li4Fenglei Huang5State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaWuhan Guide Infrared Co., Ltd, Wuhan, 430000, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China; Corresponding author.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, ChinaPolyurea is widely employed as a protective coating in many fields because of its superior ability to improve the anti-blast and anti-impact capability of structures. In this study, the mechanical properties of polyurea XS-350 were investigated via systematic experimentation over a wide range of strain rates (0.001–7000 s−1) by using an MTS, Instron VHS, and split-Hopkinson bars. The stress-strain behavior of polyurea was obtained for various strain rates, and the effects of strain rate on the primary mechanical properties were analyzed. Additionally, a modified rate-dependent constitutive model is proposed based on the nine-parameter Mooney-Rivlin model. The results show that the stress-strain curves can be divided into three distinct regions: the linear-elastic stage, the highly elastic stage, and an approximate linear region terminating in fracture. The mechanical properties of the polyurea material were found to be highly dependent on the strain rate. Furthermore, a comparison between model predictions and the experimental stress-strain curves demonstrated that the proposed model can characterize the mechanical properties of polyurea over a wide range of strain rates. Keywords: Polyurea, Strain rate effect, Dynamic mechanical properties, Constitutive modelhttp://www.sciencedirect.com/science/article/pii/S2214914718306469 |
| spellingShingle | Hao Wang Ximin Deng Haijun Wu Aiguo Pi Jinzhu Li Fenglei Huang Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling Defence Technology |
| title | Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling |
| title_full | Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling |
| title_fullStr | Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling |
| title_full_unstemmed | Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling |
| title_short | Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling |
| title_sort | investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling |
| url | http://www.sciencedirect.com/science/article/pii/S2214914718306469 |
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