RESPONSE SPECTRUM ANALYSIS Time Period vs Acceleration Curves

RESPONSE SPECTRUM ANALYSIS Time Period vs. Acceleration curves

The top part of the RESPONSE SPECTRUM ANALYSIS panel is where the Time Period vs. Acceleration spectra curves are input. A curve must be specified for at least one of the translational degrees of freedom.

The curves may be either *.csv or T/His curve files. The expected format of the *.csv file is:

<Title>
<x-axis label>,<y-axis label>
<TimePeriod_1>,<accn_1>
<TimePeriod_2>,<accn_2>
. .
. .
<TimePeriod_n>,<accn_n>

The expected format of the T/His curve file is:

$
$ Comments
$ (as many lines as you want starting with a $)
$
<Title>
<X-label>
<Y-label>
<Curve name>
<TimePeriod_1> <accn_1>
<TimePeriod_2> <accn_2>
. .
. .
<TimePeriod_n> <accn_n>

If the formats differ from this, the curves will not be read correctly.

Note: If the time period of a mode is outside the bounds of the time periods defined in the curves then the nearest point is used. A warning is printed to the dialogue box if this happens.