TY - GEN
T1 - Design and analysis of an X-structured vibration isolation mount (X-Mount) with wider quasi-zero-stiffness rang
AU - Bian, Jing
AU - Jing, Xingjian
N1 - Funding Information:
The work is supported by a general research fund (GRF) of HK RGC (Ref. 15206717) and an innovation and technology fund (ITF) project of HK ITC (ITP/020/19AP)
Publisher Copyright:
© 2020 European Association for Structural Dynamics. All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - Increasing demands for high performance of vibration control drives the development of nonlinear vibration control devices to overcome the limitations of traditional linear vibration control methods. A novel and compact X-structured mount (X-mount) with an oblique spring is designed and investigated in this paper which demonstrates beneficial nonlinear stiffness and damping, tunable payload and resonant frequency property, and a special enlarged quasi-zero-stiffness region, which thus lead to excellent vibration isolation performance without instability or other strong nonlinear response such as jump phenomenon. The X-mount is designed, based on a bio-inspired X-shaped structure, and a special oblique spring is introduced which can effectively widen the working quasi-zero-stiffness range by employing negative stiffness due to a special contact stiffness. The oblique spring can also help to reduce the dynamic stiffness achieving an ultra-low natural frequency and broadband effective vibration isolation range. The mathematical modeling, theoretical analysis and experiment results show the high performance of this X-mount, potentially providing a promising solution for vibration control in many engineering practices.
AB - Increasing demands for high performance of vibration control drives the development of nonlinear vibration control devices to overcome the limitations of traditional linear vibration control methods. A novel and compact X-structured mount (X-mount) with an oblique spring is designed and investigated in this paper which demonstrates beneficial nonlinear stiffness and damping, tunable payload and resonant frequency property, and a special enlarged quasi-zero-stiffness region, which thus lead to excellent vibration isolation performance without instability or other strong nonlinear response such as jump phenomenon. The X-mount is designed, based on a bio-inspired X-shaped structure, and a special oblique spring is introduced which can effectively widen the working quasi-zero-stiffness range by employing negative stiffness due to a special contact stiffness. The oblique spring can also help to reduce the dynamic stiffness achieving an ultra-low natural frequency and broadband effective vibration isolation range. The mathematical modeling, theoretical analysis and experiment results show the high performance of this X-mount, potentially providing a promising solution for vibration control in many engineering practices.
KW - Negative stiffness
KW - Nonlinear stiffness
KW - Passive vibration isolation
KW - Quasi-zero-stiffness
KW - X-shaped structure
UR - http://www.scopus.com/inward/record.url?scp=85098729354&partnerID=8YFLogxK
U2 - 10.47964/1120.9360.18452
DO - 10.47964/1120.9360.18452
M3 - Conference article published in proceeding or book
AN - SCOPUS:85098729354
T3 - Proceedings of the International Conference on Structural Dynamic , EURODYN
SP - 4434
EP - 4440
BT - EURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings
A2 - Papadrakakis, Manolis
A2 - Fragiadakis, Michalis
A2 - Papadimitriou, Costas
PB - European Association for Structural Dynamics
T2 - 11th International Conference on Structural Dynamics, EURODYN 2020
Y2 - 23 November 2020 through 26 November 2020
ER -