Effects of gradient characteristics on structural crashworthiness of negative Poisson's ratio honeycomb

doi:10.19936/j.cnki.2096-8000.20220528.001

Abstract

Abstract: Based on the concept of gradient, two kinds of negative Poisson's ratio honeycomb structures with composite gradient and thickness gradient were proposed, and the effects of different gradient characteristics on their crashworthiness were studied. Compared with the traditional non-gradient honeycomb, the platform stress and energy absorption characteristics of the two kinds of gradient structures were studied, and the strengthening mechanism was revealed by analyzing the deformation mode of the honeycomb cell during the compression process and the negative Poisson's ratio effect. The results show that the predicted compression deformation is similar to the reference results. Compared to traditional honeycomb structure, a strain of 0.6 in honeycomb composite gradient increased platform stress by 27.6% and the energy absorption by 70.5%, thickness of honeycomb alternating gradient increased platform stress by 243% and the energy absorption by 166%, and the increase rate of the platform stress of the gradient honeycomb shows a gradual mode, and the compression deformation mode shows an alternating plastic deformation. Compared with the composite gradient honeycomb structure, the alternating thickness gradient honeycomb structure has higher platform stress and specific energy absorption during the compression process. When the normal strain is 0.6, the platform stress of the alternating thickness gradient honeycomb structure is 169% higher than that of the composite material gradient honeycomb structure, and the specific energy absorption of the thickness alternately gradient honeycomb structure is 55.7% higher than that of the composite material gradient honeycomb structure, which has stronger energy absorption ability. The gradient structure has obvious effect on the negative Poisson's ratio of each honeycomb layer.

Key words: negative Poisson's ratio, honeycomb structure, crashworthiness, composite material gradient, alternate thickness gradient

CLC Number:

TB332

ZHANG Cheng, TIE Ying, SONG Zheng-shuo. Effects of gradient characteristics on structural crashworthiness of negative Poisson's ratio honeycomb[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(5): 5-11.

References

[1] ZHANG Z K, HU H, XU B G. An elastic analysis of a honeycomb structure with negative Poisson's ratio[J]. Smart Materials & Structures, 2013, 22(8): 084006.
[2] ZHENG Z K, HU H, LIU S R, et al. Study of an auxetic structure made of tubes and corrugated sheets[J]. Physica Status Solidi (B), 2013, 250(10): 1996-2001.
[3] LARSEN U, SIGNUND O, BOUWSTA S. Design and fabrication of compliant micromechanisms and structures with negative Poisson's ratio[J]. Journal of Microelectromechanical Systems, 1997, 6(2): 99-106.
[4] PRALL D, LAKES R S. Properties of a chiral honeycomb with a poisson's ratio of—1[J]. International Journal of Mechanical Sciences, 1997, 39(3): 305-307.
[5] THEOCARIS P S, STAVROULAKIS G E, PANAGIOTOPOULOS P D. Negative Poisson's ratios in composites with star-shaped inclusions: A numerical homogenization approach[J]. Archive of Applied Mechanics (Ingenieur Archiv), 1997, 67(4): 274-286.
[6] ALDERSON K L, COENEN V L. The low velocity impact response of auxetic carbon fibrelaminates[J]. Physica Status Solidi, 2010, 245(3): 489-496.
[7] 侯秀慧, 尹冠生. 负泊松比蜂窝抗冲击性能分析[J]. 机械强度, 2016, 38(5): 905-910.
[8] 张一帆. 两种负泊松比蜂窝结构的数值分析及实验研究[D]. 广州: 暨南大学, 2015.
[9] GIBSONL, ASHBYM. (1997) Cellular solids: Structures and properties. 2nd edition[M]. Cambridge: Cambridge University Press, 93-106.
[10] SCARPA F, SMITH C W, RUZZENE M, et al. Mechanical properties of auxetic tubular truss-like structures[J]. Physica Status Solidi (B), 2008, 245(3): 584-590.
[11] 赵显伟. 可变形蜂窝结构的力学性能分析[D]. 哈尔滨: 哈尔滨工业大学, 2013.
[12] LIRA C, INNOCENTI P, SCARPA F. Transverse elastic shear of auxetic multire-entrant honeycombs[J]. Composite Structures, 2009, 90(3): 314-322.
[13] 崔世堂, 王波, 张科. 负泊松比蜂窝面内动态压缩行为与吸能特性研究[J]. 应用力学学报, 2017, 34(5): 919-924.
[14] WANG Y, WANG L, MA Z D, et al. A negative Poisson's ratio suspension jounce bumper[J]. Materials & Design, 2016, 103: 90-99.
[15] AI L, GAO X L. Metamaterials with negative Poisson's ratio and non-positive thermal expansion[J]. Composite Structures, 2017, 162: 70-84.
[16] GREDIAC M. A finite element study of the transverse shear in honeycomb cores[J]. International Journal of Solids & Structures, 1993, 30(13): 1777-1788.
[17] XIAO D, DONG Z, LI Y, et al. Compression behavior of the graded metallic auxetic reentrant honeycomb: Experiment and finite element analysis[J]. Materials Science and Engineering A, 2019, 758: 163-171.
[18] XIAO D, XIA K, LI Y, et al. Insight into the negative Poisson's ratio effect of metallic auxetic reentrant honeycomb under dynamic compression[J]. Materials Science and Engineering: A, 2019, 763:138151.
[19] 任毅如, 蒋宏勇, 金其多, 等. 仿生负泊松比拉胀内凹蜂窝结构耐撞性[J]. 航空学报, 2021, 42(3): 314-324.
[20] HOU X H, DENG Z C, ZHANG K, et al. Dynamic crushing strength analysis of auxetic honeycombs[J]. Acta Mechanica Solida Sinica, 2016, 29(5): 490-501.
[21] TAN H L, HE Z C, LI K X, et al. In-plane crashworthiness of re-entrant hierarchical honeycombs with negative Poisson's ratio[J]. Composite Structures, 2019, 229: 111415.
[22] 马芳武, 梁鸿宇, 王强, 等. 双材料负泊松比结构的面内冲击动力学性能[J]. 吉林大学学报(工学版), 2021, 51(1): 114-121.