TY - JOUR
T1 - Mechanical response of negative stiffness truncated-conical shell systems
T2 - experiment, numerical simulation and empirical model
AU - Tan, Xiaojun
AU - Zhu, Shaowei
AU - Wang, Bing
AU - Yao, Kaili
AU - Chen, Shuai
AU - Xu, Peifei
AU - Wang, Lianchao
AU - Sun, Yuguo
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/5/1
Y1 - 2020/5/1
N2 - As promising materials, the NS mechanical metamaterials bring new alternatives for energy-absorbing materials, but also research challenges in performance prediction considering their large, local deformation. In this paper, numerical and experimental methods were employed to investigate the mechanical properties of the truncated-conical shell element. Also, empirical formulas, which can well predicate the element's response, were developed based on the simulated data. Mechanical responses of the metamaterials, consisted of truncated-conical shells in a periodic arrangement, were investigated through the multilinear model. These prediction models were all verified through the simulations and experiments, and the comparison results indicated that the presented models were applicable in wide parameter range, attributed to a piecewise fitting method. Generally, a comprehensive approach, of general applicability, is presented in this paper to study the NS metamaterial's mechanical response from local to global, and it can be a reference to researches on novel NS metamaterials.
AB - As promising materials, the NS mechanical metamaterials bring new alternatives for energy-absorbing materials, but also research challenges in performance prediction considering their large, local deformation. In this paper, numerical and experimental methods were employed to investigate the mechanical properties of the truncated-conical shell element. Also, empirical formulas, which can well predicate the element's response, were developed based on the simulated data. Mechanical responses of the metamaterials, consisted of truncated-conical shells in a periodic arrangement, were investigated through the multilinear model. These prediction models were all verified through the simulations and experiments, and the comparison results indicated that the presented models were applicable in wide parameter range, attributed to a piecewise fitting method. Generally, a comprehensive approach, of general applicability, is presented in this paper to study the NS metamaterial's mechanical response from local to global, and it can be a reference to researches on novel NS metamaterials.
KW - Empirical expressions
KW - Multilinear model
KW - Negative stiffness truncated-conical shell
KW - Trilinear model
UR - http://www.scopus.com/inward/record.url?scp=85079844079&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2020.107898
DO - 10.1016/j.compositesb.2020.107898
M3 - 文章
AN - SCOPUS:85079844079
SN - 1359-8368
VL - 188
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 107898
ER -