CMI Project 2.1.13: Magnetic materials and systems modeling Research Highlights

Hybrid rotor multiple magnets (HRMM) design for traction motors

CMI researchers at Ames National Laboratory conducted the research for this highlight

bar graph shows Peak Torque and Torque/$ Comparison

Path toward tougher Ce-Co-Fe-Cu magnet

CMI researchers at Ames National Laboratory conducted the research for this highlight

$image showing typical fracture pattern (black) in Ce-Co-Fe-Cu (yellow shadow: Al phase).$

Nd-Fe-B magnets mechanical properties improved

CMI researchers at Ames Laboratory conducted the research for this highlight

$Image shows typical fracture pattern (red) in Nd-Fe-B sintered magnet (black: Nd-oxide phase)$

Microstructural engineering for tougher Nd-Fe-B magnets

CMI researchers at Ames Laboratory conducted the research for this highlight

$Intra-granular fracture mechanism in Sm-Co$

Modeling mechanical properties in Sm-Co magnets

CMI researchers at Ames Laboratory used microstructural modeling to reveal an optimum concentration of a strengthening phase necessary for enhanced mechanical properties.

3D Microstructure of Sm-Co magnet with 1 vol.% MgO particles (yellow particles).

Finite Element Model for mechanical properties of SmCo5

CMI research conducted at Ames Laboratory developed a finite-element (FE) model for a SmCo5 magnet matrix with Sm2O3 impurities. The results accurately predict the stress distribution from a three-point bend analysis to identify domains of stress concentration and failure.

FEM vs. Microstructural model, showing the stress-strain relationship to be accurately captured by the computationally less intensive FEM model. This allows for very rapid assessments of mechanical properties of novel architectures.

Magnetically aligned electrodes predicted to increase lithium-ion battery capacity by as much as 25%

CMI research at Ames Laboratory developed a coupled electrochemical-thermal-mechanical model to predict the electrochemical degradation and performance of magnetically aligned electrodes in lithium-ion batteries for fast-charging applications

Capacity gain vs. relative tortuosity. Note the more than 25% gain at low tortuosity for the high charging rate 4C.

Functionalizing magnet additive manufacturing systems with in-situ magnetic field source

CMI technical publication on functionalizing permanent magnet additive manufacturing systems with a magnetic field source. The field source was modeled, designed, prototyped and tested on an existing table-top commercial 3D printer.

Depiction of the magnetic-field aligning permanent magnet-producing apparatus, side view.

Predicting mechanical performance of Sm-Co magnets

CMI research predicts mechanical performance of Sm-Co magnets

Electromagnet core design enable printed anisotropic magnets

CMI research at Ames Laboratory and ORNL on electromagnet core design enable printed anisotropic magnets

Model of magnetic flux distribution within core and nozzle