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SPECTRUM
18.28
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SPECTRUM: D efine a response spectrum.
This option is used to define a spect rum to be used in a
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RESPONSE SPECTRUM analysis.
Product: ABAQUS/Standard
Type: Model data
Level: Model
References:
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“Response spectrum analysis,” Section 6.3.10 of the ABAQUS Analysis User ’s Manual
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RESPONSE SPECTRUM
Required parameter:
NAME
Set this parameter equal to a label that will be used to refer to the spectrum. This label is used to
cross-reference a spectrum on the
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RESPONSE SPECTRUM option.
Optional parameters:
G
Set this parameter equal to the value of the acceleration of gravity. This parameter is used only
when TYPE=G is specified.
INPUT
Set this parameter equal to the name of the alternate input file containing the data lines for this
option. See “Input syntax rules,” Section 1.2.1 of the ABAQ US Analysis User’s Manual, for the
syntax of such file names. If this parameter is omitt ed, it is assumed that the data follow the key word
line.
TYPE
Set TYPE=DISPLACEMENT, TYPE=VELOCITY, or TYPE=ACCELERATION (default) to
define the units in which the spectrum is defined.
Set TYPE=G to enter an acceleration spectrum in g-units. The paramete r G then defines the
gravitational acceleration.
18.28–1
ABAQUS Version 6.1 Module:
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