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First, define the time history function as described in the previous topic .
Click the time history case icon.
The Time History Case dialog will open.
Click the Add New Row button in the Input Functions section.
Custom 1 will appear in the Function column. For example, choose acceleration DX as the download.
Effective ground acceleration coefficient Ao, Building importance coefficient (I) and carrier behavior coefficient (R) and scaling value (Alphaa) of the acceleration record should be taken into account as factors.
Factor= Ao.I.Alpha / R
Enter the scale factor of the acceleration register as the actor.
Enter the mass coefficient and stiffness coefficient values.
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In my time definitions section, give the starting, end times, time increment for steps, step period of output.
Click the OK button to close the dialog.
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Specifications |
Time history case name  The case name is entered. |
Starting time  The starting time is entered. |
End time  The end time is entered. |
Time increment for steps  The value for the time increment is entered at each step. |
Step period of output  Step period is entered for outputs. |
Mass coefficient  Mass coefficient is entered. |
Stiffness coefficient  Stiffness coefficient is entered. |
Gamma  Gamma value is entered. |
Beta  Beta value is entered. |
Input functions  From the loading column, determine which loading or loadings you will do the analysis for and enter a factor. You can add uploads one after the other with add new row. |
Scale  It is a scaling method used to approximate the acceleration record defined in the time history function to the elastic design spectrum curve. In this method, only a single acceleration record is scaled by zooming into the spectrum curve. For three-dimensional calculation, you can use the Scale Ground Motion command under Analysis list from the Ribbon menu.  |
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