Results 81 to 90 of about 8,268 (287)

Design, Experiment, and Improvement of a Quasi-Zero-Stiffness Vibration Isolation System

Applied Sciences, 2020
This paper proposes a new kind of quasi-zero-stiffness (QZS) isolation system that has the property of low-dynamic but high-static stiffness. The negative stiffness was produced using two magnetic rings, the magnetization of which is axial.
Shuai Wang, Wenpen Xin, Yinghao Ning, Bing Li, Ying Hu   +4 more
doaj   +1 more source

4D Printing of Multimaterial Flexible Magneto‐Active Polymers

Advanced Materials Technologies, EarlyView.
Magneto‐active polymers are 3D‐printed with tunable mechanical and magnetic properties using both superparamagnetic and hard ferromagnetic fillers. Nano‐CT imaging reveals the spatial distribution of particles within the matrix. Programmable magnetization patterns and soft, flexible architectures enable responsive actuation, offering exciting ...
Naji Tarabay, Mahtab Shakibmanesh, Javier Alonso López Medina, Hongyi Guan, Alan Mitchell, Ananya Renuka Balakrishna, Camilo Velez   +6 more
wiley   +1 more source

Can a nonlinear Quasi-Zero-Stiffness spring improve the ride quality of a vehicle? [PDF]

, 2023
The paper examines the possibility of using a nonlinear Quasi-Zero-Stiffness (QZS) spring in a vehicle suspension. The response of a Single Degree of Freedom (SDOF) model to harmonic base excitations is obtained which may be unstable and unbounded ...
Abolfathi, Ali
core  

Ductility Tuning via Cluster Network Characteristics of Porous Components

Advanced Materials Technologies, EarlyView.
Network optimization via cluster characteristics induced by interaction of stress concentration is proposed, demonstrating increased cluster size and dispersion in non‐uniform porous components. The optimized structures exhibit, for the first time, that enhanced ductility and damage progression is controllable through zigzag cluster network designed by
Ryota Toyoba, Yuichi Otsuka, Ian J Davies, Naritoshi Aoyagi, Yukio Miyashita   +4 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

A six-direction absolute displacement sensor for time-delayed control based on quasi-zero-stiffness property

International Journal of Distributed Sensor Networks, 2016
A novel six-direction sensor for absolute vibration motion is proposed in this study for the measurement of absolute motions by employing multi-direction quasi-zero-stiffness property.
Guyue Jiao, Xiuting Sun
doaj   +1 more source

Preliminary design of a test rig for combining passive nonlinear isolation with active control

, 2012
Resilient elements are typically used to isolate delicate equipment from a vibrating host structure. Conventionally, these isolators are designed to operate in their linear region, but more recently nonlinear isolators have been employed to increase the ...
Ab Rahim, M., Rustighi, E., Waters, T.P.
core  

Robust energy harvesting from walking vibrations by means of nonlinear cantilever beams [PDF]

, 2014
In the present work we examine how mechanical nonlinearity can be appropriately utilized to achieve strong robustness of performance in an energy harvesting setting.
Kluger, Jocelyn Maxine, Sapsis, Themistoklis P., Slocum Jr., Alexander H   +2 more
core   +1 more source

Investigation on a quasi-zero-stiffness vibration isolator under random excitation

Journal of Theoretical and Applied Mechanics, 2016
The dynamic response and isolation performance of a Quasi-Zero-Stiffness (QZS) vibration isolator using inclined springs as negative stiffness correctors under random excitation are presented in this paper. The probabilistic linearization method is employed to determine the dynamic response of the QZS vibration isolator and compared with the exact ...
Wang, Yong, Li, Shunming, Cheng, Chun
openaire   +2 more sources

3D Elastomeric Kirigami for Passively Stretchable Fully Soft Vacuum‐Powered Artificial Muscles

Advanced Robotics Research, EarlyView.
The creation of purely soft, passively stretchable artificial muscles has long been a hot topic in robotics research. Here, we present a design approach involving the extension of 2D kirigami to 3D elastomeric kirigami structures. In a biomimetic demonstration of the human upper arm, this approach successfully simulated the driving mechanism ...
Tao Wang, Hongyuan Wang, Qian Liu, Xi Wang, Guoqiang Fu, Caijiang Lu, Bo Li, Jinhua Zhang, Hongying Zhang   +8 more
wiley   +1 more source