12.2. Element Compatibility

Your finite element model may intermix certain elements with the VOLT degree of freedom. To be compatible, the elements must have the same meaning of the VOLT degree of freedom (electric potential or time-integrated electric potential) and the same reaction solution (see table below). Electric charge reactions must all be positive or negative.

Table 12.7: Reaction Solutions for Elements with VOLT DOF

ElementKEYOPT (1)DOFsMaterial Property Input for VOLT DOFReaction Solution
LINK68 N/ATEMP, VOLTRSVXElectric Current (F label = AMPS)
SHELL157 N/ATEMP, VOLTRSVX, RSVYElectric Current (F label = AMPS)
SOLID236 1AZ, VOLT [3]RSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
SOLID237 1AZ, VOLT [3]RSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
PLANE121 N/AVOLT PERX, PERY, RSVX, RSVY,LSSTPositive or Negative Electric Charge (F label = CHRG) [1]
SOLID122 N/AVOLTPERX, PERY, PERZ, RSVX, RSVY, RSVZ, LSSTPositive or Negative Electric Charge (F label = CHRG) [1]
SOLID123 N/AVOLTPERX, PERY, PERZ, RSVX, RSVY, RSVZ, LSSTPositive or Negative Electric Charge (F label = CHRG) [1]
PLANE230 N/AVOLTRSVX, RSVY, PERX, PERY, LSSTElectric Current (F label = AMPS)
SOLID231 N/AVOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZ, LSSTElectric Current (F label = AMPS)
SOLID232 N/AVOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZ, LSSTElectric Current (F label = AMPS)
CIRCU94 0–5VOLT, CURRN/ANegative or Positive Electric Charge (F label = CHRG or AMPS) [2]
CIRCU124 0–12VOLT, CURRN/AElectric Current (F label = AMPS)
CIRCU125 0 or 1VOLTN/AElectric Current (F label = AMPS)
TRANS126 N/AUX-VOLT, UY-VOLT, UZ-VOLTN/A

Electric Current (F label = AMPS)

Mechanical Force (F label = FX)

PLANE13 6VOLT, AZRSVX, RSVYElectric Current (F label = AMPS)
7UX, UY, UZ, VOLTPERX, PERYNegative Electric Charge (F label = AMPS)
SOLID5 0UX, UY, UZ, TEMP, VOLT, MAGRSVX, RSVY, RSVZElectric Current (F label = AMPS)
PERX, PERY, PERZNegative Electric Charge (F label = AMPS)
1TEMP, VOLT, MAGRSVX, RSVY, RSVZElectric Current (F label = AMPS)
3UX, UY, UZ, VOLTPERX, PERY, PERZNegative Electric Charge (F label = AMPS)
9VOLTRSVX, RSVY, RSVZElectric Current (F label = AMPS)
SOLID98 0UX, UY, UZ, TEMP, VOLT, MAGRSVX, RSVY, RSVZ Electric Current (F label = AMPS)
PERX, PERY, PERZNegative Electric Charge (F label = AMPS)
1TEMP, VOLT, MAGRSVX, RSVY, RSVZElectric Current (F label = AMPS)
3UX, UY, UZ, VOLTPERX, PERY, PERZNegative Electric Charge (F label = AMPS)
9VOLTRSVX, RSVY, RSVZElectric Current (F label = AMPS)
PLANE222101UX, UY, VOLTRSVX, RSVYElectric Current (F label = AMPS)
1001UX, UY, VOLTPERX, PERY, LSSTNegative Electric Charge (F label = CHRG)
110TEMP, VOLTRSVX, RSVY, PERX, PERYElectric Current (F label = AMPS)
111UX, UY, TEMP, VOLTRSVX, RSVY, PERX, PERYElectric Current (F label = AMPS)
1011UX, UY, TEMP, VOLTPERX, PERY, LSST, DPERNegative Electric Charge (F label = CHRG)
100100VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100110TEMP, VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100101UX, UY, VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100111UX, UY,TEMP,VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
PLANE223 101UX, UY, VOLTRSVX, RSVYElectric Current (F label = AMPS)
1001UX, UY, VOLTPERX, PERY, LSSTNegative Electric Charge (F label = CHRG)
110TEMP, VOLTRSVX, RSVY, PERX, PERYElectric Current (F label = AMPS)
111UX, UY, TEMP, VOLTRSVX, RSVY, PERX, PERYElectric Current (F label = AMPS)
1011UX, UY, TEMP, VOLTPERX, PERY, LSST, DPERNegative Electric Charge (F label = CHRG)
10110TEMP, VOLT, AZRSVZElectric Current (F label = AMPS)
10101UX, UY, VOLT, AZRSVX, RSVYElectric Current (F label = AMPS)
10201UX, UY, VOLT, EMF, AZRSVX, RSVYElectric Current (F label = AMPS)
100100VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100110TEMP, VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100101UX, UY, VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100111UX, UY, TEMP, VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
SOLID225 101UX, UY, UZ, VOLTRSVX, RSVY, RSVZElectric Current (F label = AMPS)
1001UX, UY, UZ, VOLTPERX, PERY, PERZ, LSSTNegative Electric Charge (F label = CHRG)
110TEMP, VOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
111UX, UY, UZ, TEMP, VOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
1011UX, UY, UZ, TEMP, VOLTPERX, PERY, PERZ, LSST, DPERNegative Electric Charge (F label = CHRG)
100100VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100110TEMP, VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100101UX, UY, UZ, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
100111UX, UY, UZ, TEMP, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
SOLID226 101UX, UY, UZ, VOLTRSVX, RSVY, RSVZElectric Current (F label = AMPS)
1001UX, UY, UZ, VOLTPERX, PERY, PERZ, LSSTNegative Electric Charge (F label = CHRG)
110TEMP, VOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
111UX, UY, UZ, TEMP, VOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
1011UX, UY, UZ, TEMP, VOLTPERX, PERY, PERZ, LSST, DPERNegative Electric Charge (F label = CHRG)
10110TEMP, VOLT, AZRSVX, RSVY, RSVZElectric Current (F label = AMPS)
10101UX, UY, UZ, VOLT, AZ RSVX, RSVYElectric Current (F label = AMPS)
10201UX, UY, UZ, VOLT, EMF, AZ RSVX, RSVYElectric Current (F label = AMPS)
100100VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100110TEMP, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
100101UX, UY, UZ, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
100111UX, UY, UZ, TEMP, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
SOLID227 101UX, UY, UZ, VOLTRSVX, RSVY, RSVZElectric Current (F label = AMPS)
1001UX, UY, UZ, VOLTPERX, PERY, PERZ, LSSTNegative Electric Charge (F label = CHRG)
110TEMP, VOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
111UX, UY, UZ, TEMP, VOLTRSVX, RSVY, RSVZ, PERX, PERY, PERZElectric Current (F label = AMPS)
1011UX, UY, UZ, TEMP, VOLTPERX, PERY, PERZ, LSST, DPERNegative Electric Charge (F label = CHRG)
10110TEMP, VOLT, AZRSVX, RSVY, RSVZElectric Current (F label = AMPS)
10101UX, UY, UZ, VOLT, AZ RSVX, RSVYElectric Current (F label = AMPS)
10201UX, UY, UZ, VOLT, EMF, AZ RSVX, RSVYElectric Current (F label = AMPS)
100100VOLT, CONCRSVX, RSVYElectric Current (F label = AMPS)
100110TEMP, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
100101UX, UY, UZ, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
100111UX, UY, UZ, TEMP, VOLT, CONC RSVX, RSVYElectric Current (F label = AMPS)
INFIN110 1VOLTPERX, PERYPositive or Negative Electric Charge (F label = CHRG) [1]
INFIN111 2VOLTPERX, PERY, PERZPositive or Negative Electric Charge (F label = CHRG) [1]

  1. The following apply to electrostatic elements PLANE121, SOLID122, and SOLID123 and far-field elements INFIN110 and INFIN111:

    • If KEYOPT(6) is set to 0, the reaction solution is positive electric charge.

    • If KEYOPT(6) is set to 1, the reaction solution is negative electric charge.

  2. The following apply to circuit element CIRCU94, KEYOPT(1) = 0-4:

    • If KEYOPT(6) is set to 0, the analysis type is piezoelectric-circuit and the reaction solution is negative electric charge.

    • If KEYOPT(6) is set to 1, the analysis type is electrostatic-circuit and the reaction solution is positive electric charge.

  3. The following apply to electromagnetic elements SOLID236 and SOLID237, KEYOPT(1) = 1 or 2.

    • If KEYOPT(2) is set to 2 in a harmonic or transient analysis, VOLT is a time-integrated electric potential (KEYOPT(1) = 1) or a time-integrated voltage drop (KEYOPT(1) = 2).

    • In all the other cases, the VOLT degree of freedom represents an electric potential (KEYOPT(1) = 1) or a voltage drop (KEYOPT(1) = 2).