Static and dynamic properties of a perforated metallic auxetic metamaterial with tunable stiffness and energy absorption

• Published in: International journal of impact engineering Vol. 164; p. 104193
• Main Authors: Zhang, Yi, Ren, Xin, Han, Dong, Cheng, Xian, Jiang, Wei, Zhang, Xue Gang, Zhang, Xiang Yu, Xie, Yi Min
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.2022; Elsevier BV
• Subjects: Auxetic metamaterials; Crushing; Crushing response; Densification; Design; Dynamic response; Energy absorption; Mechanical analysis; Mechanical properties; Metamaterials; Negative poisson's ratio; Numerical models; Parameters; Poisson's ratio; Stiffness; Tuning; Variable stiffness factor; Negative poisson's ratio; Crushing response; Auxetic metamaterials; Energy absorption; Variable stiffness factor

•Auxetic metallic metamaterial is designed by variable stiffness factor (VSF) method.•The variable energy factor (VEF) method is proposed.•The accuracies of actual VSF and VEF are discussed under different loading speed.•Layered gradient design can improve mechanical properties of the metamaterials....