Planar Two-Dimensional Vibration Isolator Based on Compliant Mechanisms DOI Creative Commons

Ruizhe Zhu,

Jinpeng Hu, Long Huang

et al.

Micromachines, Journal Year: 2024, Volume and Issue: 16(1), P. 10 - 10

Published: Dec. 25, 2024

In practical engineering applications, the vibration is often generated in various directions and can be harmful to equipment. Thus, it necessary develop isolators that reduce multiple directions. this paper, we propose a planar two-dimensional isolator based on compliant mechanisms. The proposed mechanism consists of two negative stiffness-compliant modules positive modules, which leads quasi-zero stiffness (QZS) property mechanism. dynamic model established by using third-order Taylor expansion harmonic balance method. Based model, influence different parameters displacement transmissibility discussed, including damping ratio, system stiffness, excitation amplitude. Finally, conducted isolation experiments obtained isolator. results verify has good performance for low-frequency vibration.

Language: Английский

Asymmetric bistable shock isolators for repeated force-transfer nullification using optimal payload return DOI

Jinhong Noh,

Pilkee Kim,

Yong‐Jin Yoon

et al.

Mechanical Systems and Signal Processing, Journal Year: 2025, Volume and Issue: 225, P. 112265 - 112265

Published: Jan. 7, 2025

Language: Английский

Citations

0
Tip-clearance pressure fluctuations between conventional pump-jet propulsor and pump-jet propulsor with rotor blade crown in non-uniform inflow DOI

Lin Xue,

Donglin Zou,

Chunxiao Jiao

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

The suppression of the pressure fluctuations in tip clearance pump-jet propulsor is great significance improving its noise radiation level. This study considers adding rotor blade crown structure to propose a new type propulsor. hydrodynamic performance conventional and with was analyzed non-uniform inflow conditions by conducting experimental tests numerical simulation. results show that after introduction crown, open water coefficients two types propulsors similar trends. However, thrust torque propulsion efficiency are slightly smaller than those Furthermore, temporal spatial distribution pulsating flow direction changed, inside near suppressed. line spectra characteristic all at passing frequency harmonics, reduced varying degrees. Theoretically, range spectrum magnitude reduction 2.78–24.07 dB, while obtained test 0.66–19.42 dB. provides an important theoretical basis engineering reference for level propulsors.

Language: Английский

Citations

0
Design Methodology and Application Dynamics of Compact Quasi-Zero Stiffness Isolators DOI Creative Commons

Yingqi Zhu,

Qingchao Yang,

Shuyong Liu

et al.

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(7), P. 3478 - 3478

Published: March 22, 2025

With the rapid development of precision instruments, aerospace, and automotive industries, demand for compact vibration isolators capable suppressing low-frequency vibrations has surged. Although prior reviews have established theoretical framework quasi-zero stiffness (QZS) isolators, critical gaps persist in addressing their design under strong nonlinear dynamics diverse engineering constraints. This review systematically analyzes dynamic characteristics QZS systems effects evaluates five innovative methodologies isolators: special spring type, magnetic bionic metamaterials-based origami-inspired type. Key findings reveal that spring-type are simple to space-efficient but difficult machine. Magnetic-type achieve ultra-low start-up frequencies face thermal instability. Metamaterial designs enable multifunctional integration at cost manufacturing complexity, while bionic-inspired abstract practical applications. We find current research tends prioritize miniaturization over synergistic optimization load capacity, broadband isolation, adaptability. Future should focus on multi-degree-of-freedom systems, coupled metamaterials-bionic structures, active control. work provides a key roadmap advancing technology space-constrained

Language: Английский

Citations

0
A quasi-zero-stiffness metastructure for concurrent low-frequency vibration attenuation and energy harvesting DOI

Yaoqiang Shu,

Kai Wang, Tingting Chen

et al.

Thin-Walled Structures, Journal Year: 2025, Volume and Issue: unknown, P. 113371 - 113371

Published: April 1, 2025

Language: Английский

Citations

0
Inverse design of variable-thickness curved-beam structures for nonlinear mechanical signal transformation DOI

Jinyu Ji,

Kai Zhang, Xiaogang Guo

et al.

Thin-Walled Structures, Journal Year: 2025, Volume and Issue: unknown, P. 113419 - 113419

Published: May 1, 2025

Language: Английский

Citations

0
On the combined iteration scheme of harmonic balance-pseudo arclength-extrapolation method applied to the nonlinear systems with nonlinear damping and time delay DOI

Youheng Dong,

Zhixin Wang, Xiaochen Mao

et al.

Nonlinear Dynamics, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

Language: Английский

Citations

0
A linear planar magnetic spring for 2-DOF vibration isolation DOI

Mingkai Wu,

Jiulin Wu, Bo Ren

et al.

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110432 - 110432

Published: May 1, 2025

Language: Английский

Citations

0
Planar Two-Dimensional Vibration Isolator Based on Compliant Mechanisms DOI Creative Commons

Ruizhe Zhu,

Jinpeng Hu, Long Huang

et al.

Micromachines, Journal Year: 2024, Volume and Issue: 16(1), P. 10 - 10

Published: Dec. 25, 2024

In practical engineering applications, the vibration is often generated in various directions and can be harmful to equipment. Thus, it necessary develop isolators that reduce multiple directions. this paper, we propose a planar two-dimensional isolator based on compliant mechanisms. The proposed mechanism consists of two negative stiffness-compliant modules positive modules, which leads quasi-zero stiffness (QZS) property mechanism. dynamic model established by using third-order Taylor expansion harmonic balance method. Based model, influence different parameters displacement transmissibility discussed, including damping ratio, system stiffness, excitation amplitude. Finally, conducted isolation experiments obtained isolator. results verify has good performance for low-frequency vibration.

Language: Английский

Citations

0