TY - JOUR
T1 - Collision enhanced hyper-damping in nonlinear elastic metamaterial
AU - Yu, Miao
AU - Fang, Xin
AU - Yu, Dianlong
AU - Wen, Jihong
AU - Cheng, Li
N1 - Funding Information:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11872371, 11991032, and 12002371) and the Science and Technology Innovation Program of Hunan Province, China (Grant No. 2020RC4022).
Publisher Copyright:
© 2022 Chinese Physical Society and IOP Publishing Ltd.
PY - 2022/5
Y1 - 2022/5
N2 - Nonlinear elastic metamaterial, a topic which has attracted extensive attention in recent years, can enable broadband vibration reduction under relatively large amplitude. The combination of damping and strong nonlinearity in metamaterials may entail extraordinary effects and offer the capability for low-frequency and broadband vibration reduction. However, there exists a clear lack of proper design methods as well as the deficiency in understanding properties arising from this concept. To tackle this problem, this paper numerically demonstrates that the nonlinear elastic metamaterials, consisting of sandwich damping layers and collision resonators, can generate very robust hyper-damping effect, conducive to efficient and broadband vibration suppression. The collision-enhanced hyper damping is persistently presented in a large parameter space, ranging from small to large amplitudes, and for small and large damping coefficients. The achieved robust effects greatly enlarge the application scope of nonlinear metamaterials. We report the design concept, properties and mechanisms of the hyper-damping and its effect on vibration transmission. This paper reveals new properties offered by nonlinear elastic metamaterials, and offers a robust method for achieving efficient low-frequency and broadband vibration suppression.
AB - Nonlinear elastic metamaterial, a topic which has attracted extensive attention in recent years, can enable broadband vibration reduction under relatively large amplitude. The combination of damping and strong nonlinearity in metamaterials may entail extraordinary effects and offer the capability for low-frequency and broadband vibration reduction. However, there exists a clear lack of proper design methods as well as the deficiency in understanding properties arising from this concept. To tackle this problem, this paper numerically demonstrates that the nonlinear elastic metamaterials, consisting of sandwich damping layers and collision resonators, can generate very robust hyper-damping effect, conducive to efficient and broadband vibration suppression. The collision-enhanced hyper damping is persistently presented in a large parameter space, ranging from small to large amplitudes, and for small and large damping coefficients. The achieved robust effects greatly enlarge the application scope of nonlinear metamaterials. We report the design concept, properties and mechanisms of the hyper-damping and its effect on vibration transmission. This paper reveals new properties offered by nonlinear elastic metamaterials, and offers a robust method for achieving efficient low-frequency and broadband vibration suppression.
KW - 43.40.+s
KW - hyper-damping
KW - nonlinear elastic metamaterial
KW - vibration suppression
UR - http://www.scopus.com/inward/record.url?scp=85131329184&partnerID=8YFLogxK
U2 - 10.1088/1674-1056/ac48fc
DO - 10.1088/1674-1056/ac48fc
M3 - Journal article
AN - SCOPUS:85131329184
SN - 1674-1056
VL - 31
JO - Chinese Physics B
JF - Chinese Physics B
IS - 6
M1 - 064303
ER -