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Deterministic Analysis
In a Deterministic Analysis it is assumed that all input parameters are "exactly" known (e.g. wedge plane orientations, shear strength, etc), and Swedge computes the factor of safety (FS) for a single wedge. The Deterministic Analysis option can be selected in the Project Settings dialog or from the drop-list in the toolbar.
Deterministic Analysis selected in Project Settings
Deterministic Analysis selected in toolbar
The wedge Factor of Safety (FS) is displayed in the toolbar, as shown above.
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Deterministic Analysis: Input Data
The Input Data dialog for a Deterministic Analysis is organized under 3 tabs - Slope, Joints, and Forces, as shown below.
Deterministic Input Data dialog
The factor of safety is immediately recalculated whenever Input Data is entered or modified, and OK or Apply is selected in the dialog.
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Deterministic Analysis: Factor of Safety
The primary result from an Swedge Deterministic analysis, is the wedge Factor of Safety (FS). This is displayed in the toolbar, the Sidebar and the Info Viewer. The Factor of Safety is defined as the ratio of Resisting Force / Driving Force.
For details of the Swedge safety factor calculations, see the Swedge Theory Manual.
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Deterministic Analysis: Sidebar
A summary of analysis results and input data is displayed in the Sidebar wedge information panel (e.g. factor of safety, sliding planes, joint properties etc). The information displayed can be customized with the Filter List option. The Sidebar data can be copied to the clipboard with the right-click Copy shortcut.
Sidebar wedge information panel
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Deterministic Analysis: Info Viewer
A comprehensive, formatted summary of analysis results and input data is available in the Info Viewer. The Info Viewer information can be copied to the clipboard or saved to a file. The display and formatting of the Info Viewer can be customized with the Display Options dialog.
Info Viewer analysis summary
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Deterministic Analysis: Stereonet
The Stereonet View for a Deterministic Analysis will display the great circles (and corresponding poles) representing the slope and joint plane orientations.
Stereonet View (Deterministic Analysis)
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Deterministic Analysis: Sensitivity Analysis
A Sensitivity Analysis allows you to determine the effect of individual variables on the safety factor. Individual parameters can be varied across a range of values and the effect on safety factor observed. This helps to identify the parameters that have the most effect on wedge stability.
The results of a Sensitivity Analysis are displayed on a sensitivity plot, as shown below.
Sensitivity plot of 3 variables
The Sensitivity Analysis option is only available if the analysis type is Deterministic.
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