 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12949 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8096
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| In English (Mech. Solids): | | 4853 |
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| << Previous article | Volume 59, Issue 4 / 2024 | Next article >> |
| Yiwen Chen, Kun Yang, Yibo Wang, and Han Wang, "Design and Mechanical Properties Analysis of Structures with Shape Memory Negative Poisson's Ratio," Mech. Solids. 59 (4), 2509-2534 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
4 |
Pages |
2509-2534 |
| DOI |
10.1134/S0025654424604476 |
| Title |
Design and Mechanical Properties Analysis of Structures with Shape Memory Negative Poisson's Ratio |
| Author(s) |
Yiwen Chen (College of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, 121000 China, cccchenyiwen@163.com)
Kun Yang (College of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, 121000 China, yangkunwh@163.com)
Yibo Wang (College of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, 121000 China, lntu163@163.com)
Han Wang (College of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, 121000 China, 1399634566@qq.com) |
| Abstract |
Using shape memory polymer as matrix material to prepare negative Poisson’s ratio structure, the shape memory performance, impact resistance, light weight and other characteristics are
integrated, which has great application prospects in vehicle collision, aerospace, military, medicine
and other fields. PLA, TPU, and PETG materials were selected for shape memory performance test,
and the shape recovery rate, shape recovery time and shape fixation rate were analyzed to show that
the shape memory performance of PLA materials was better. The quasi-static compression test and
simulation analysis were carried out for four typical negative Poisson’s ratio structures with PLA as the
base material: concave hexagon, concave triangle, star and rotating cell. Through the analysis of Poisson’s ratio effect, impact resistance and energy absorption ability, the mechanical properties of the
concave hexagonal structure are better, and the negative Poisson’s ratio effect is obvious. When the
compressive strain is less than 15%, the rebound rate of other structures is above 90% except star structure. The response surface optimization method is used to optimize the impact response of the concave hexagonal structure with the maximum residual displacement after impact deformation. After
optimization, the maximum displacement under energy impact deformation is reduced by 21.76% and
the energy absorption is increased by 3.29%, and the optimized structure has better shape recovery
performance, which provides a reference for designing the buffer structure with self-recovery performance. |
| Keywords |
Shape memory polymer, Negative Poisson’s ratio structure, Shape memory performance, Impact resistance, Response surface optimization |
| Received |
03 July 2024 | Revised |
18 September 2024 | Accepted |
19 September 2024 |
| Link to Fulltext |
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