Finite Element Analysis (FEA) : AOMAG Magnetics

Magnetic fields are invisible, so how to draw the shape of the magnetic field and depict the direction of the magnetic field? With the help of finite element analysis is not a good way. Here we come together to understand it.

Finite element analysis (FEA) is a very effective tool to obtain relatively reliable results before building a prototype. FEA can simulate customer's most demanding engineering challenges on the early stage of development, such as magnetic field strength, pull force, and torque.

Finite Element Analysis (FEA) of Magnetic Field Strength

For regular-shaped sintered Neodymium magnet and sintered Samarium Cobalt magnet, magnetic field strength (surface gauss) of pole surface's geometric center can be calculated base on Biot-Savart law and designers can obtain reference values via relevant magnetic calculators during the design phase. Finite Element Analysis of magnetic field strength is primarily aimed at multipole magnetized magnets and magnetic assemblies. Axially multipole magnetized magnet and diametrically multipole magnetized magnet is widely served various kinds of magnetic sensor and micro motor. Customers in these two areas have lively interests in the simulation results of different permanent magnetic material, shape, pole number, and air gap. The most striking feature of magnetic assemblies is to enhance magnetic strength. FEA allows to emulate whether magnetic assemblies can get ideal magnetic field strength in a given space or not.

Magnetic Field Strength Analysis

Finite Element Analysis (FEA) of Pull Force

Pull force of regular-shaped sintered Neodymium magnet, sintered Samarium Cobalt magnet, or sintered ferrite magnet can be approximately calculated via some empirical formulas. Hobbyist and industrialist can preliminary estimate demand by our pull force calculator. Pull force of commonly axially magnetized magnet can be strengthened by modifying dimension, grade, or air gap. In addition, multipole magnetization should be another brilliant path. FEA can serve reliable and economical multipole magnetization solution to help customers achieve cost-reduction in mass-produced products and new design.

Pull Force Analysis

Finite Element Analysis (FEA) of Torque

Magnetic coupling is kind of permanent magnet rotating machinery which mainly utilizes acting force between opposite magnetic poles. Magnetic coupling can form non-contact transmission between internal and external mechanical system without friction and noise. FEA can affordable to deliver reliable simulation results of torque values.

Torque Finite Element Analysis

Finite Element Analysis (FEA) is used to analyze magnetic problems to obtain more accurate solutions, which can then be tested and fine-tuned based on prototypes of magnet structures. Using FEA models, flux densities, torques, and forces can be calculated, and the results can be exported in a variety of formats, including vector potential maps, flux density maps, and flux path maps.