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STAAD Commands and Input Instructions
Section 5
5-136
Example
DEFINE MATERIAL
ISOTROPIC CFSTEEL
E 28000.
POISSON 0.25
DENSITY 0.3E-3
ALPHA 11.7E-6
DAMP 0.075
END MATERIAL
CONSTANTS
MATERIAL CFSTEEL MEMB 1 TO 5
CONSTANTS
E 2.1E5 ALL
BETA 45.0 MEMB 5 7 TO 18
DENSITY STEEL MEMB 14 TO 29
BETA 90 MEMB X
The last command in the above example will set BETA as 90
°
for
all members parallel to the X-axis.
Notes
1) The value for E must always be given first in the Constants list
for each member/element.
2) All numerical values must be provided in the current units.
3)
It is not necessary or possible to specify the units of
temperature or ALPHA. The user must ensure that the value
provided for ALPHA is consistent in terms of units with the
value provided for temperature (see Section 5.32.6).
4)
If G is not specified, but Poisson is specified, G is calculated from
()
[]
Poisson1 2
E
+
.
5)
If neither G nor Poisson is specified, Poisson is assumed based
on E, and G is then calculated.
6)
If G and Poisson are both specified, the input value of G is
used, G is not calculated in this situation.