*PHYSICAL CONSTANTS
16.7 *PHYSICAL CONSTANTS: Specify physicalconstants.
This option is used to define physical constants necessary for an analysis; since ABAQUS has no built-in
units, no default values are provided. If a physical constant required for the analysis is not given, ABAQUS
will issue a fatal error message. The units used for the constants must be consistent with the remaining input
data.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data
Level: Model
References:
•“Uncoupled heat transfer analysis,” Section6.5.2 of the ABAQUS Analysis User ’sManual
•“Mass diffusion analysis,” Section6.8.1 of the ABAQUS Analysis User ’sManual
•“Modeling fluid-filled cavities,”Section 11.5.1 of the ABAQUS Analysis User’s Manual
•“Rate-dependentplasticity: creep and swelling,” Section 18.2.4 of the ABAQUS Analysis User’s Manual
•“Hydrostatic fluid models,” Section 20.4.1 ofthe ABAQU S AnalysisUser ’sManual
•“Diffusivity,”Section 20.5.1 of the ABAQUS Analysis User’s Manual
•“Solubility,”Section 20.5.2 of the ABAQUS Analysis User’s Manual
•“Thermal contact properties,” Section 30.2.1 of the ABAQUS Analysis User’s Manual
•“Cavity radiation,” Section 32.1.1of the ABAQUS Analysis User ’sManual
Optional parameters:
ABSOLUTE ZERO
Set this parameter equal to the absolute zeroon the temperature scale chosen. For example, if the
analysis uses temperature in degrees Celsius, set ABSOLUTE ZERO=−273.15.
STEFAN BOLTZMANN
Set this parameter equal to the Stefan Boltzmann constant. For example, STEFAN
BOLTZMANN=5.669× 10−8 Joule per sec m2Kelvin4in SI units.
UNIVERSAL GAS CONSTANT
Set this parameter equal to the universal gas constant. For example, UNIVERSAL GAS
CONSTANT=8.31434Joule per mole Kelvin in SI units.
There are no data lines associated with this option.
16.7–1
ABAQUS Version 6.1 Module: ID:
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