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*EM
*EM_MAT_001
*EM_MAT_001
Purpose: Define the electromagnetic material type and properties for a material whose permeability equals the free space permeability.
Card 1
Variable
Type
Default
VARIABLE
MID
1
2
3
4
MID
MTYPE
SIGMA
EOSID
I
I
F
I
none
none
none
none
5
6
7
8
DESCRIPTION
Material ID: refers to MID in the *PART card.
MTYPE
Defines the electromagnetism type of the material:
EQ.0: Air or vacuum
EQ.1: Insulator material: these materials have the same electromagnetism behavior as EQ.0
EQ.2: Conductor carrying a source. In these conductors, the eddy current problem is solved, which gives the actual current density. Typically, this would correspond to the coil.
EQ.4: Conductor not connected to any current or voltage source,
where the Eddy current problem is solved. Typically, this would correspond to the workpiece
SIGMA
Initial electrical conductivity of the material
EOSID
ID of the EOS to be used for the electrical conductivity (see *EM_EOS
card).
LS-DYNA R7.0
4-25 (EM)