Dynamic bandgap responsiveness of modified re-entrant metamaterials in thermal-mechanical field

Jiayi,Hu1; Peng,Dong1; Jinrui,Cao1; Zhi,Gong1; Runsheng,Hou2; Hongyan,Yuan1

2024-05

10.1016/j.jmrt.2024.05.135

Journal of Materials Research and Technology   影响因子和分区

2238-7854

This paper introduces a nested sinusoidal re-entrant (NSR) metamaterial characterized by tunable complete bandgaps (CBGs) and dynamic responsiveness in thermal-mechanical dual fields. NSR comprises shape memory polymer and features a sinusoidal modification with nested re-entrant hexagonal and star-shape re-entrant structure. Dynamic response of NSR is studied using the representative volume element method, specifically focusing on the effective modulus and Poisson's ratio and CBGs under varying average strains. The findings indicate that both the mechanical properties and CBGs exhibit dynamic responses to mechanical field, demonstrating interrelation between mechanical adjustments and functional performance. Moreover, the study examines how temperature fluctuations influence the NSR's elastic modulus, thereby altering its CBGs. Hence, manipulating both compression and temperature variations presents a viable approach to control and adjust the CBGs of NSR effectively. These results are validated by computations of the frequency response function under various average strains. Overall, this design presents a promising approach for developing mechanical metamaterials with tunable functionality.

Dynamic responsiveness Metamaterial Re-entrant structures Shape memory polymer Tunable bandgaps

SCI ; EI

英语

第一 ; 通讯

Elsevier BV

2-s2.0-85193430219

人工提交

1.Shenzhen Key Laboratory of Soft Mechanics & Smart Manufacturing, Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
2.Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, 24061, USA

Jiayi,Hu,Peng,Dong,Jinrui,Cao,et al. Dynamic bandgap responsiveness of modified re-entrant metamaterials in thermal-mechanical field[J]. Journal of Materials Research and Technology,2024,30:7328-7339.

Jiayi,Hu,Peng,Dong,Jinrui,Cao,Zhi,Gong,Runsheng,Hou,&Hongyan,Yuan.(2024).Dynamic bandgap responsiveness of modified re-entrant metamaterials in thermal-mechanical field.Journal of Materials Research and Technology,30,7328-7339.

Jiayi,Hu,et al."Dynamic bandgap responsiveness of modified re-entrant metamaterials in thermal-mechanical field".Journal of Materials Research and Technology 30(2024):7328-7339.