Bulk Data Entry Defines a tabular function for use in generating
temperature-dependent material properties.
Format
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(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
TABLEM1
TID
FLAT
x1
y1
x2
y2
x3
y3
etc.
ENDT
Example
(1)
(2)
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(5)
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TABLEM1
32
-3.0
6.9
2.0
5.6
3.0
5.6
ENDT
Definitions
Field
Contents
SI Unit Example
TID
Table identification
number.
(Integer > 0)
FLAT
Specifies the handling method for y-values outside the specified
range of x-values in the table.
=0 (Default)
If an x-value input is outside the range of x-values specified on the
table, the corresponding y-value look up is performed using linear
extrapolation from the two start or two end points.
=FLAT or 1
If an x-value input is outside the range of x-values specified on the
table, the corresponding y-value is equal to the start or end points,
respectively.
xi,
yi
Tabular values.
Any
xi-yi pair may be
ignored by placing SKIP in either of the two
fields.
(Real)
ENDT
Flag indicating the end of
the table.
Comments
must be in either ascending or descending order,
but not both.
Discontinuities may be specified between
any two points except the two start points or two end points. For example, in
Figure 1, discontinuities are allowed only between points through . Also, if is evaluated at a discontinuity, then the
average value of is used. In Figure 1, the value of at is .
At least one continuation entry must be
specified.
The end of the table is indicated by the
existence of ENDT in either of the two fields following the last
entry. An error is detected if any continuations follow the entry containing the
end-of-table flag ENDT.
For
FLAT=0 (default),
TABLEM1 uses the algorithm. 6:
Where,
Input to the table
Is returned
The table look-up is performed using linear interpolation within
the table and linear extrapolation outside the table using the two start or
end points (see Figure 1). No warning messages are issued, if the table data is
input incorrectly.
For FLAT=1, the same
algorithm as FLAT=0 is used, except that
values outside the range are not extrapolated. The corresponding start or
end point y-values are used for all y-values outside the range.
In a nonlinear heat transfer analysis,
TABLEM1 uses the following algorithm:
Where,
Input to the table
Is returned
Is the corresponding entity value (for example, conductivity)
from the MAT4 entry
This TABLEM1 entry when referenced on the
MATT4 entry specifies
corresponding multipliers to generate the final material properties () for various values.
This card is represented as a load
collector in HyperMesh.