ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE
TypeModel data
LevelModel
Abaqus/CAEInteraction module
Required parameters
- NAME
Set this parameter equal to a label that will be used to refer to the
impedance property on the
IMPEDANCE or
SIMPEDANCE option.
Optional parameters
- DATA
Set DATA=ADMITTANCE (default) to specify an impedance using a table of admittance
values.
Set DATA=IMPEDANCE to specify an impedance using a table of real and imaginary
parts of the impedance.
- INPUT
Set this parameter equal to the name of the alternate input file containing
the data lines for this option. See
Input Syntax Rules
for the syntax of such file names. If this parameter is omitted, it is assumed
that the data follow the keyword line.
Data
lines to define an impedance using DATA=ADMITTANCE (default)
- First line
,
the proportionality factor between pressure and displacement of the surface in
the normal direction. This quantity is the imaginary part of the complex
admittance, divided by the angular frequency; see
Acoustic and shock loads.
(Units of F−1L3.)
,
the proportionality factor between pressure and velocity of the surface in the
normal direction. This quantity is the real part of the complex admittance.
(Units of F−1L3T−1.)
Frequency. (Cycles/time.) Frequency dependence is active only during
frequency domain analysis in
Abaqus/Standard.
Repeat this data line as often
as necessary in
Abaqus/Standard
to describe the variation of the coefficients with frequency. Only the first
line entered will be used in direct-integration
procedures.
Data
lines to define an impedance using DATA=IMPEDANCE
- First
line
,
the real part of the surface impedance. (Units of F
L−3T.)
,
the imaginary part of the surface impedance. (Units of F
L−3T.)
Frequency. (Cycles/time.) Frequency dependence is active only during
frequency domain analysis in
Abaqus/Standard.
Repeat this data line as often
as necessary in
Abaqus/Standard
to describe the variation of the coefficients with frequency. Only the first
line entered will be used in direct-integration
procedures.