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This allows you to principal stress components τmax=½(σ1 - σ3). This component can be accessed via the Stress Components toolbar as follows:
This toolbar can be changed to a vertical orientation by dragging is against either the right or left hand edge of the main window. It can be changed back to a horizontal orientation by dragging is against either the top or bottom edge of the main window.
Selecting the
In elastic analysis, the maximum shear stress is normally used with the minor principal stress and the Mohr-Coulomb or Hoek-Brown strength criterion
to estimate the amount of damage due to over-stressing. Since none of the parameters have any orientation sensitivity, this criterion is representative for homogeneous rock mass stability.
By contrast, in non-linear analysis the stresses can never exceed the strength unless some creep is used. In this latter case, viscous creep can allow stress states above the failure criterion, thus indicating a lack of static equilibrium. Hence for non-linear analysis one normally directly considers the amount of non-linear strain or the strain rate predicted by the model
Over-stressing can be presented in several forms including:
The contour range is set using
Any of these components can be added to the contouring toolbar if desired
The user may find it handy to add the
button to the contouring toolbar for quick access to all stress components.
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