Results 71 to 80 of about 2,643 (215)

Performance Evaluation of a Halbach Permanent Magnet Axial Protection Bearing Under Vertical Magnetic Levitation Flywheel Rotor Drop

Lubricants
This study addresses the issues with traditional rolling protection bearings in vertical magnetic levitation flywheel energy storage systems (FESSs), which are prone to impact, wear, and temperature rise under abnormal conditions, such as drops.
Dengke Li, Jun Ye, Gang Chen, Lai Hu, Zixi Wang, Taishun Qian, Jiahao Zhang, Mengchen Zi, Chao Liang   +8 more
doaj   +1 more source

Design and Analysis of Coaxial Magnetic Gear Mechanism with Halbach Permanent-Magnet Array

Journal of Physics: Conference Series, 2019
Abstract The disadvantages of mechanical gear can be replaced by the advantages of magnetic gear related to transferring torque without mechanical touch, no gear lubrication, low mechanical loss, low vibration, and intrinsic overload protection. From the types of magnetic gear, coaxial magnetic gear is the most developed type.
Saian Nur Fajri, Ibnu Siswanto, Ahmad Mustamil Khoiron   +2 more
openaire   +1 more source

Magnetic Equivalent Circuit Modelling for Flux Modulation Axial Flux Permanent Magnet Machine With YASA Topology

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
A magnetic equivalent circuit model (MECM) is proposed in this paper to analyse the flux modulation yokeless and segmented armature (FM‐YASA) machine rapidly, which is 423 times faster than three‐dimensional finite element and 2.9 times faster than two‐dimensional FE approximately.
Kaibo Wang, Lingyun Shao, Zhuoran Zhang, Zhongze Wu, Wei Hua   +4 more
wiley   +1 more source

Levitation of non-magnetizable droplet inside ferrofluid

, 2018
The central theme of this work is that a stable levitation of a denser non-magnetizable liquid droplet, against gravity, inside a relatively lighter ferrofluid -- a system barely considered in ferrohydrodynamics -- is possible, and exhibits unique ...
Das, Arup K., Das, Prasanta K., Singh, Chamkor   +2 more
core   +1 more source

Determining the minimum mass and cost of a magnetic refrigerator [PDF]

, 2011
An expression is determined for the mass of the magnet and magnetocaloric material needed for a magnetic refrigerator and these are determined using numerical modeling for both parallel plate and packed sphere bed regenerators as function of temperature ...
A. Smith, Bahl, Barclay, Bjørk, Bjørk, Bjørk, Bjørk, Bjørk, Bjørk, C.R.H. Bahl, Coey, Dan’kov, Egolf, Engelbrecht, Engelbrecht, Engelbrecht, Engelbrecht, Engelbrecht, Halbach, Hirano, Jacobs, Jensen, Kim, Lu, Mallinson, Morrish, N. Pryds, Nielsen, Oesterreicher, Okamura, Pecharsky, Petersen, Petersen, R. Bjørk, Rowe, Rowe, Rowe, Russek, Russek, Tura, Tura, Tušek, Yu, Zimm   +43 more
core   +2 more sources

Design and Development of a Magnetic Lead Screw With a Quasi‐Halbach Array

IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
This paper reports on a study of a novel MLS with a quasi‐Halbach array and a rotor made of a SMC. The proposed topology has an array formed from a helix of discretized pieces of PMs axially and radially magnetized in its slider. Using FEA and static magnetic simulations, prototypes were assessed.
Aly Ferreira Flores Filho, Paulo Roberto Eckert, David George Dorrell, Davi von Mühlen Bertele, Lucas Vinskoski   +4 more
wiley   +1 more source

Effect of the passive damping plate on the vertical stability of permanent magnet electrodynamic suspension system

IET Electric Power Applications
The vertical stability of permanent magnet (PM) electrodynamic suspension (EDS) system with a passive damping plate is studied because of the well‐known under‐damped nature of the EDS suspension system.
Cheng Luo, Kunlun Zhang, Huixian Zhang
doaj   +1 more source

Analytical field model of segmented Halbach array permanent magnet machines considering iron nonlinearity

IET Electric Power Applications, 2021
The permeability of the iron is usually assumed to be infinite by the linear subdomain technique, leading to the neglect of magnet saturation. This study presents an analytical model of a segmented Halbach array permanent magnet machine by considering ...
Heshan Zhang, Minglei Yang, Yu Zhang, Jiying Tuo, Shuang Luo, Jin Xu   +5 more
doaj   +1 more source

Hybrid Quasi‐3D Multi‐Material Topology Optimisation of a Surface Permanent Magnet Motor With High Torque Density for Urban Air Mobility

IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
This study proposes a hybrid quasi‐3D multi‐material topology optimisation method that integrates parameter optimisation for designing high torque‐density surface permanent magnet motors. The proposed method achieves 3D rotor optimisation without remeshing, enabling efficient exploration of shape and material distributions.
Haruki Kinoshita, Yoshitsugu Otomo, Takashi Abe   +2 more
wiley   +1 more source

Magnetoactive Metamaterials: A State‐of‐the‐Art Review

Advanced Engineering Materials, Volume 27, Issue 23, December 2025.
Magnetoactive metamaterials combine magnetoactive composites with architected metastructures to enable contactless, tunable control of mechanical, acoustic, and elastic properties. This review highlights recent advances in their design, fabrication, and applications in soft robotics, biomedical devices, and adaptive structures and outlines future ...
Seyyedmohammad Aghamiri, Ramin Sedaghati
wiley   +1 more source