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相关概念视频

Magnetic Damping01:17

Magnetic Damping

495
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
495
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

1.5K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
1.5K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.6K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.6K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

4.9K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
4.9K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.0K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.0K
Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

4.1K
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
4.1K

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相关实验视频

Updated: Jul 21, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

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对于巨型磁力强制性材料的基于域切换的非线性合响应.

Yunshuai Chen1, Pengyang Li1, Jian Sun1

  • 1School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China.

Materials (Basel, Switzerland)
|July 29, 2023
PubMed
概括

这项研究引入了一种新的构成模型,用于预测特尔-D的非线性磁阻反应,考虑跨多个尺度的合磁性,弹性和热现象. 该模型为设计巨型磁强制传感器和控制振动提供了指导.

科学领域:

  • 材料科学 材料科学 材料科学
  • 固体力学 固体力学是什么
  • 磁力学 磁力学 是一种

背景情况:

  • 在Terfenol-D这样的材料中,非线性强磁性行为是复杂的.
  • 了解多场合现象 (磁性,弹性,热性) 对材料应用至关重要.
  • 现有的模型可能无法完全捕捉微观结构相互作用和歇斯底里.

研究的目的:

  • 开发一个多层次的,三维的构成模型来预测Terfenol-D的非线性磁阻反应.
  • 为了结合磁域,颗粒和多晶复合体之间的相互作用.
  • 为了解释合的磁性,弹性,热性和机械现象.

主要方法:

  • 一种利用域旋转机制的微观现象学方法.
  • 一个完全合的自我一致的同质化方案.
  • 应用博尔兹曼函数和适应的吉尔斯-阿瑟顿模型用于歇斯底里.
  • 吉布斯函数的泰勒数列扩展.

主要成果:

  • 该模型成功地预测了Terfenol-D在各种外部负荷和磁刺激下非线性磁阻应的反应.
  • 它准确地捕捉到不同热环境的影响.
  • 谷物尺度的散量菌株是使用博尔兹曼函数和同质化计算的.
关键词:
域名切换 转换 域名切换强磁性材料是一种强磁性材料.不线性反应是非线性反应.

更多相关视频

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

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Studying Large Amplitude Oscillatory Shear Response of Soft Materials

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相关实验视频

Last Updated: Jul 21, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.1K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

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Studying Large Amplitude Oscillatory Shear Response of Soft Materials
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Studying Large Amplitude Oscillatory Shear Response of Soft Materials

Published on: April 25, 2019

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结论:

  • 开发的模型为理解和预测复杂的磁强化行为提供了一个强大的框架.
  • 它为精确控制非线性振动提供了理论指导.
  • 该模型有助于在多个尺度上进行旋转的巨型磁力强化传感器的最佳设计.