Results 81 to 90 of about 351 (212)

Conical metal-rubber support with quasi-zero stiffness effect [PDF]

Journal of Physics: Conference Series, 2018
Yu. A. Burian, M. V. Silkov
openaire   +1 more source

A Multimodal Haptic Feedback Interface with Thin‐Film Compliant Mechanism

Advanced Science, EarlyView.
Multimodal haptic devices can trigger different mechanoreceptors, enabling richer haptic information. This study presents an electromagnetic multimodal haptic device capable of delivering indentation, stretch, and vibration stimuli. The device is enabled by a novel polymer thin‐film compliant mechanism that provides high translational compliance along ...
Jingjing Wan, Emanuele Nicotra, James Davies, Kefan Zhu, Quang Anh Nguyen, Sinuo Zhao, Chi Cong Nguyen, Bibhu Sharma, Adrienne Ji, Hermione Truong, Patrick Pruscino, Tan Huynh, Phuoc Thien Phan, Hoang‐Phuong Phan, Nigel Hamilton Lovell, Thanh Nho Do   +15 more
wiley   +1 more source

A new magnetic negative stiffness mechanism: A case study of Fast Steering Mirror for quasi-zero stiffness vibration isolation

Advances in Mechanical Engineering
Quasi-Zero Stiffness (QZS) is essential for low-frequency passive vibration isolation, with the negative stiffness mechanism (NSM) being pivotal for achieving QZS.
Jin Luo, Luyao Zhang, Li Miao, Yao Mao
doaj   +1 more source

A Smart Fluid‐Hydraulic System Based on MRF Valve Control and Its Application in Flexible Grasping

Advanced Science, EarlyView.
This study introduces a smart fluid hydraulic system using MRF valve control for flexible gripping. An MRF‐MSV with an integrated excitation coil and micro‐textured damping channels is designed and validated; micro‐texturing increases hydraulic resistance. Coupled with a soft actuator, the MRF‐MSV enables dynamic bending and grasping.
Linfeng Huo, Hui Ji, Ruidong Hong, Songlin Nie, Fanglong Yin, Zhonghai Ma   +5 more
wiley   +1 more source

Design of a novel buckling-type quasi-zero stiffness isolator

Journal of Low Frequency Noise, Vibration and Active Control
Based on the significant geometric nonlinearity associated with large deformations in beams, this paper presents the design of a buckling-type quasi-zero stiffness (BQZS) isolator using slender beams with positive and negative stiffness.
Biao Zhao
doaj   +1 more source

Design Methodology and Application Dynamics of Compact Quasi-Zero Stiffness Isolators

Applied Sciences
With the rapid development of precision instruments, aerospace, and automotive industries, the demand for compact vibration isolators capable of suppressing low-frequency vibrations has surged.
Yingqi Zhu, Qingchao Yang, Shuyong Liu, Kai Chai   +3 more
doaj   +1 more source

Kresling Origami‐Based Metamaterial Robot for Dynamic Electromagnetic Control

Advanced Science, EarlyView.
A reconfigurable metamaterial system integrates deformable origami units with high‐permittivity ceramic plates. Pneumatic switching between structural states alters local resonance conditions, enabling dynamic radar stealth and adaptive microwave reflection for mobile communication.
Xinxi Zeng, Long Zhou, Shaojie Xi, Yixuan Gao, Desheng Pan, Chaoyang Sun, Haoxin Sun, Xian Wang, Lingyun Qian, Peipei Li, Pengfei Zhu, Bo Li, Jiang Luo, Ji Zhou   +13 more
wiley   +1 more source

Ultrafast Optoacoustics Reveals Intricate 3D Anisotropic Elasticity in Nanocrystalline Membranes

Advanced Science, EarlyView.
Ultrafast optoacoustic spectroscopy combined with a Sagnac interferometer enables non‐contact, simultaneous characterization of thickness and the full three‐dimensional anisotropic elastic constants in freestanding nanocrystalline copper membranes. By capturing gigahertz Lamb waves and zero‐group‐velocity resonances followed by SAFE‐GA inversion, the ...
Shuchang Zhang, Yi He, Guojie Luo, Jie Huang, Pak San Yip, Haoyu Cui, Wanglinhan Zhang, Zijian Wang, Lin Ye, Yang Lu, Zhongqing Su, Yehai Li   +11 more
wiley   +1 more source

Pendulum column with inclined negative stiffness as a novel hybrid seismic isolation mechanism integrated into soil with pile-like characteristics

Scientific Reports
Earthquakes caused major structural damage, prompting the development of seismic isolation techniques. On the other hand, building structures on weak soils poses many challenges due to their lack of bearing capacity and inappropriate behavior in the long
Abdallah Azizi, Majid Barghian
doaj   +1 more source

Origami Metamaterials Based on Low‐Melting‐Point Alloy Phase Transition: Breaking the Trade‐Off Between Reusability and Energy Absorption Quality

Advanced Science, EarlyView.
This work presents an origami metamaterial that integrates a low‐melting‐point alloy skeleton into an elastomeric shell. It dissipates energy through the metal's plastic deformation and recovers through the solid–liquid phase transition of the alloy together with the hyperelasticity of the shell.
Yupeng Liu, Wei Zhao, Chengjun Zeng, Jiuming Fan, Yanju Liu, Jinsong Leng   +5 more
wiley   +1 more source