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sassi:user_interface:options:motion
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sassi:user_interface:options:motion [2016/05/13 11:27] 127.0.0.1 external edit |
sassi:user_interface:options:motion [2018/04/23 11:53] (current) phil |
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| IMPORTANT NOTE: If the incoherent SSI analysis option is selected in the HOUSE window dialog, then the saved MOTION input file (with extension .mot) using AFWRITE command will include a request for applying the complex transfer function phase adjustment. If the MOTION input (.mot file) is saved with the coherent motion option in the HOUSE window dialog, then no phase adjustment is applied to either coherent (or incoherent) transfer functions. We recommend the use of the phase adjustment for incoherent SSI analyses. | IMPORTANT NOTE: If the incoherent SSI analysis option is selected in the HOUSE window dialog, then the saved MOTION input file (with extension .mot) using AFWRITE command will include a request for applying the complex transfer function phase adjustment. If the MOTION input (.mot file) is saved with the coherent motion option in the HOUSE window dialog, then no phase adjustment is applied to either coherent (or incoherent) transfer functions. We recommend the use of the phase adjustment for incoherent SSI analyses. | ||
| - | {{ :sassi:submodeler:motionopt.png |}} | + | {{ :sassi:user_interface:motionopt.png |}} |
| The following options allow you to specify the analysis options for ACS SASSI MOTION module: | The following options allow you to specify the analysis options for ACS SASSI MOTION module: | ||
| * **Operation Mode** - Select the operation mode from Solution and Data Check. | * **Operation Mode** - Select the operation mode from Solution and Data Check. | ||
| - | * **Type of Analysis** - Select the type of analysis from Seismic and Foundation Vibration. This option is the same as set in the Analysis Options - [[sassi:submodeler:options:ANALYS]] dialog box. | + | * **Type of Analysis** - Select the type of analysis from Seismic and Foundation Vibration. This option is the same as set in the Analysis Options - [[sassi:user_interface:options:ANALYS]] dialog box. |
| * **Baseline Correction** - Select if the motion module will generate a baseline correction. The baseline correction is based on Hudson-Housner time-domain procedure. It computes only approximate absolute displacements. The user has to check if the ground displacement reasonable by checking if it is zero at the end of earthquake motion. The relative displacements between different locations can be computed more accurately by the difference absolute displacements. | * **Baseline Correction** - Select if the motion module will generate a baseline correction. The baseline correction is based on Hudson-Housner time-domain procedure. It computes only approximate absolute displacements. The user has to check if the ground displacement reasonable by checking if it is zero at the end of earthquake motion. The relative displacements between different locations can be computed more accurately by the difference absolute displacements. | ||
| * **Output Control** - Select the type of response from Output Only Displacements, Output Only Velocities, and Output Only Accelerations. Only accelerations can be requested for seismic problems. | * **Output Control** - Select the type of response from Output Only Displacements, Output Only Velocities, and Output Only Accelerations. Only accelerations can be requested for seismic problems. | ||
| * **Output Only Transfer Functions** - If this option is set, only transfer function printed plots can be requested at nodal points and time history of input motion need not be supplied. | * **Output Only Transfer Functions** - If this option is set, only transfer function printed plots can be requested at nodal points and time history of input motion need not be supplied. | ||
| * **Save Complex Transfer Function** - If this option is set then amplitude and phase of the computed transfer functions are saved in TFU and TFI files. This option is not recommended for typical SSI analysis since the information on the Fourier phase is often difficult to interpret from engineering point of view. | * **Save Complex Transfer Function** - If this option is set then amplitude and phase of the computed transfer functions are saved in TFU and TFI files. This option is not recommended for typical SSI analysis since the information on the Fourier phase is often difficult to interpret from engineering point of view. | ||
| - | * **Output Time History Step** - Type the output time history step. If this value is zero, ACS SASSI MOTION prints the table only, else prints every history step point. | + | * **Save File 12/13** - User can save FILE12 or FILE13 produced by MOTION module. |
| * **Total Duration to Be Plotted** - Input the total duration of time history to be plotted. | * **Total Duration to Be Plotted** - Input the total duration of time history to be plotted. | ||
| * **Smoothing Parameter** - The smoothing parameter is used to filter the potential spurious spectral sharp peaks and valleys that could be artificially introduced by the original SASSI interpolation scheme for transfer functions. Using the ACS SASSI spectrum plot capability, the analyst could investigate the effects of smoothing on the SSI results by comparing for selected nodes the computed and the interpolated amplitude transfer functions that are saved on hard-drive in text files with extension TFU and TFI. To use smoothing between any pair of the computed frequencies has to be at least one interpolated frequency. | * **Smoothing Parameter** - The smoothing parameter is used to filter the potential spurious spectral sharp peaks and valleys that could be artificially introduced by the original SASSI interpolation scheme for transfer functions. Using the ACS SASSI spectrum plot capability, the analyst could investigate the effects of smoothing on the SSI results by comparing for selected nodes the computed and the interpolated amplitude transfer functions that are saved on hard-drive in text files with extension TFU and TFI. To use smoothing between any pair of the computed frequencies has to be at least one interpolated frequency. | ||
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| The Node List contains lists of nodes having the same output request. Output requests in constrained directions are ignored. Press the Add button to add a new node list, the Edit button to edit the nodes of the selected list, or the Delete button to delete the selected list. | The Node List contains lists of nodes having the same output request. Output requests in constrained directions are ignored. Press the Add button to add a new node list, the Edit button to edit the nodes of the selected list, or the Delete button to delete the selected list. | ||
| - | {{ :sassi:submodeler:options:add_nodelist.png |}} | + | {{ :sassi:user_interface:options:add_nodelist.png |}} |
| You may use blank, tab, ‘,’ , or ‘;’ as separators for the node numbers. You may use ‘-’ to add a set of nodes to the node list. | You may use blank, tab, ‘,’ , or ‘;’ as separators for the node numbers. You may use ‘-’ to add a set of nodes to the node list. | ||
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| * **Total Number of Freq. Steps** - Type the total number of frequency steps used in response spectrum analysis. If the first frequency, the last frequency, and the total number of frequency steps are all zero or blank, the following default values are assumed: first frequency = 0.4, last frequency = 40, total number of frequency steps = 40. This leads to a plot which fills one page. | * **Total Number of Freq. Steps** - Type the total number of frequency steps used in response spectrum analysis. If the first frequency, the last frequency, and the total number of frequency steps are all zero or blank, the following default values are assumed: first frequency = 0.4, last frequency = 40, total number of frequency steps = 40. This leads to a plot which fills one page. | ||
| * **Damping Ratios** - Type the damping ratios used in response spectra. You may use blank, tab, ‘,’, or ‘;’ as separators between damping ratios. | * **Damping Ratios** - Type the damping ratios used in response spectra. You may use blank, tab, ‘,’, or ‘;’ as separators between damping ratios. | ||
| - | * **Nr. of Fourier Components** - Type the number of values to be used in the Fourier transform. The value is the same as set in the Analysis Options - [[sassi:submodeler:options:SITE]] dialog box. | + | * **Nr. of Fourier Components** - Type the number of values to be used in the Fourier transform. The value is the same as set in the Analysis Options - [[sassi:user_interface:options:SITE]] dialog box. |
| - | * **Time Step of Control Motion** - Type the time step of control motion (sec). The value is the same as set in the Analysis Options - [[sassi:submodeler:options:SITE]] dialog box. | + | * **Time Step of Control Motion** - Type the time step of control motion (sec). The value is the same as set in the Analysis Options - [[sassi:user_interface:options:SITE]] dialog box. |
| * **Multiplication Factor** - Type the multiplication factor for scaling the time history. Use only if Max. Value for Time History is blank. | * **Multiplication Factor** - Type the multiplication factor for scaling the time history. Use only if Max. Value for Time History is blank. | ||
| * **Max. Value for Time History** - Type the maximum value of time history to be used. The values of the time history will be scaled to this value. Use only if Multiplication Factor is blank. | * **Max. Value for Time History** - Type the maximum value of time history to be used. The values of the time history will be scaled to this value. Use only if Multiplication Factor is blank. | ||
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| * **Last Record** - Type the last record from the time history file to be used (default: last). | * **Last Record** - Type the last record from the time history file to be used (default: last). | ||
| * **Title** - Type the title of the acceleration time history. | * **Title** - Type the title of the acceleration time history. | ||
| - | * **Acceleration History File** - Type the full path and name of the time history file. To view the time history file, use the [[ sassi:submodeler:Time History|Plot / Time History]] command. | + | * **Acceleration History File** - Type the full path and name of the time history file. To view the time history file, use the [[ sassi:user_interface:Time History|Plot / Time History]] command. |
| * **File Contains Pairs Time Step-Acceleration** - Select this option if your time history file contains pairs of time step and acceleration values on each line. Otherwise, the file is expected to contain the time step on the first line, and on the following lines one acceleration value. | * **File Contains Pairs Time Step-Acceleration** - Select this option if your time history file contains pairs of time step and acceleration values on each line. Otherwise, the file is expected to contain the time step on the first line, and on the following lines one acceleration value. | ||
sassi/user_interface/options/motion.1463153231.txt.gz · Last modified: 2016/08/29 09:18 (external edit)
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