Bulk Data Entry Defines electrical resistance properties for the gap elements (CGAP or
CGAPG) in electrical analysis.
Format
| (1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
| PGAPEC |
PID |
KCER |
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Examples
Manual specification of
KCER:
| (1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
| PGAPEC |
2 |
1E6 |
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Automatic determination of
KCER:
| (1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
| PGAPEC |
2 |
AUTO |
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Definitions
| Field |
Contents |
SI Unit Example |
| PID |
Property identification
number. 1 No default (Integer >
0)
|
|
| KCER |
Resistance for the closed
gap. 2
- Real > 0.0
- AUTO
No default
|
|
Comments
- PGAPEC provides electrical
resistance for CGAP/CGAPG
elements. The PID of a PGAPEC entry must
match a PID with an existing PGAP.
- KCER represents gap resistance
values for closed gaps. Theoretically, while lower resistance values enforce a
perfect conductor, excessively low values may cause poor conditioning of the
conduction matrix. If such conditions are observed, you may need to increase the
value of gap resistance. When gap is open, no electricity goes through the gap
and the resistance is infinite. To stabilize conduction matrix,
KCER*1.0E-14 is used for open gap electrical
resistance.
To facilitate reasonable values of KCEC,
automatic calculation (KCER=AUTO) is
supported. This determines the value of KCER for each gap
element using the conductance of surrounding elements.
- Electrical contact with FREEZE
status uses the actual contact status (open or closed) based on geometry.
- Electrical Contact Analysis via
PCONTEC and PGAPEC is supported for
Steady-State Electric Analysis and Multi-Steady Electric Analysis.
- This card is represented as a property in HyperMesh.