Effects of bias magnetic field on plasma ejection and dynamic characteristics of a coaxial gun operated in gas-puffed mode

2021 ◽  
Author(s):  
Liangwen Qi ◽  
Jian Song ◽  
Fantao Zhao ◽  
Chongxiao Zhao ◽  
Huijie Yan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Dynamic Characteristics ◽  
Bias Magnetic Field

Analysis of the giant magnetostrictive actuator with strong bias magnetic field

2015 ◽  
Vol 394 ◽  
pp. 416-421 ◽  
Author(s):  
Guangming Xue ◽  
Zhongbo He ◽  
Dongwei Li ◽  
Zhaoshu Yang ◽  
Zhenglong Zhao
Keyword(s):  
Magnetic Field ◽  
Bias Magnetic Field ◽  
Magnetostrictive Actuator

Non-linear dynamics of the Villari effect in the presence of a non-homogeneous magnetic field

2018 ◽  
Vol 233 (4) ◽  
pp. 431-440
Author(s):  
Andrzej Rysak ◽  
Magdalena Gregorczyk
Keyword(s):  
Magnetic Field ◽  
Time Series ◽  
Hysteresis Loops ◽  
Bias Field ◽  
Homogeneous Magnetic Field ◽  
Operating Conditions ◽  
Bias Magnetic Field ◽  
Linear Dynamics ◽  
Non Linear ◽  
Magnetostrictive Devices

Investigations of systems with an active magnetostrictive element generally assume the presence of an external homogeneous bias magnetic field. This article, however, presents the results of a study investigating a bimorph magnetostrictive-aluminium beam vibrating in a non-homogeneous bias field. By comparing results obtained under different operating conditions of the system, the combined effect of the non-linear beam stress and the non-homogeneous external magnetic field on the dynamics of the Villari phenomenon is determined. The preliminary results prove that the application of non-linear magnetic fields to the magnetostrictive devices ensures the extension of energy harvesting bandwidth of these devices and can be used to improve their control possibilities. A study of time series and hysteresis loops provides more detailed information about the non-linear magnetization and dynamics of the system.

scholarly journals A dynamic simulation of the circuit breaking electromagnetic system with a drive circuit

2019 ◽  
Vol 11 (3) ◽  
pp. 168781401982856
Author(s):  
Shize Huang ◽  
Fan Zhang ◽  
Yue Liu ◽  
Qiyi Guo
Keyword(s):  
Magnetic Field ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Simulation Method ◽  
Digital Controller ◽  
Electromagnetic System ◽  
Switching Device ◽  
Dynamic Analyses ◽  
Drive Circuit ◽  
The Magnetic Field

A circuit breaking electromagnetic system is the actuator and digital controller for a switching device. Its performance can significantly affect operations of the switching device. We propose a dynamic simulation method coupling the electric field and the magnetic field for the circuit breaking electromagnetic system and its drive circuit. The method combines both statistic and dynamic analyses, and differential equations. Finally, we utilize the flux transformer as an example to validate this method and reveal the dynamic characteristics of the drive transformer by changing the parameters of the drive circuit.

Further Insight on the Power Harvesting Capabilities of Magnetic Shape Memory Alloys

2015 ◽  
Author(s):  
Roger Guiel ◽  
Jason L. Dikes ◽  
Constantin Ciocanel ◽  
Heidi P. Feigenbaum
Keyword(s):  
Magnetic Field ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Compressive Stress ◽  
Power Output ◽  
Axial Magnetic Field ◽  
Magnetic Shape Memory ◽  
Bias Magnetic Field ◽  
Magnetic Shape Memory Alloys ◽  
Power Harvesting

Magnetic shape memory alloys are a relatively new class of materials that are suitable for actuation, sensing, and power harvesting. The power harvesting capability comes from the change in magnetization that the material exhibits when internal martensitic variants change orientation. In typical power harvesting tests, the material is loaded with axial compression in the presence of a bias magnetic field applied normal to the compressive loading direction. However, previous results suggest that having a component of the bias magnetic field applied axially, parallel to the compressive stress, can increase the power output of MSMAs. Furthermore, most of the MSMAs power harvesting results reported to date focused on the open circuit voltage that the material can generate during cyclic loading. However, this information is not indicative of the true power harvesting capability of the material and one has to focus on the power output of the material instead. This paper presents voltage trends and power output data for a MSMA sample exposed simultaneously to a cyclic compressive stress and bi-axial magnetic field.

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