Phase² v8.0 Update History

Phase2 8.010 – May 14 2012

1. Modeler. During geometry building process the program might crash if vertices are too close and model extents are large. Added a message box instead warning user to run Geometry Cleanup first.
2. SSR models using the effective stress flag would give incorrect results if the model was staged and material removal occurred.
3. Improved the speed of saving models with large joint networks and pore pressure grids.
4. Updated ‘Copy from Roclab/Rocdata’ function in material properties to correctly copy the peak/residual tensile strength.
5. Importing Slide files with geotextiles and a groundwater finite element mesh did not properly mesh the geotextile elements. Fixed.

Phase2 8.009 – April 20 2012

1. Compute. Improved the performance of infinite element for multi-material models.
2. Compute. Introduced the option to handle changing material without resetting the material stress.
3. Compute. Improved the performance of Timoshenko beam for thin thickness.
4. Compute: Introduced new convergence criterion to check for both the force and energy conditions. This option improves results accuracy for models with extensive plastic failure zones.
5. Compute: Fixed a bug for joint shear calculation for bolts that intersect joints.
6. Compute. Fixed a bug with joint stiffness reduction for joint that failed in tension.
7. Compute. Fixed a bug in the 3-node beam in axisymmetric mode.
8. Compute. New and improved algorithm for cable bolts that handles accurately bolt failure.
9. Compute. Fixed a bug for applying negative pore pressure in joints.
10. Compute. Fixed a bug in effective stress analysis for both stress options (plane strain and axisymmetric).
11. Model/Interpret. Added ability to control decimal places in ‘Show Values’ option.
12. Model/Interpret. Missing residual tensile strength in the properties table.
13. Compute. Cam-Clay yield flags are now properly set and displayed in the Interpreter.
14. Model. A bug in the Voronoi joint creation was fixed.

Phase2 8.008 – January 24 2012

1. Interpret. Fixed a bug which prevented user from opening a file if probabilistic analysis was turned on in Project Settings but no variables have been defined.
2. Modeler. Fixed a bug that wouldn’t properly intersect composite liners with bolts
3. Modeler. Fixed a bug that wouldn’t allow the liner removal stage to be updated correctly.
4. Compute. Can now add files to the queue while the program is computing.
5. Modeler. Rearranged boundary editing menu options – moved frequently used options from secondary popup to top “Boundary” level.
6. Interpret. In multistage models where some bolts were uninstalled in intermediate stages it was not possible to view results for remaining bolts at later stages. Show values and plotting was affected.
7. Compute: Improved calculation speed for models that have joints installed after the first stage.
8. Modeler. Improved speed of saving files with large joint networks.
9. Modeler. If you toggle on the factoring of joint properties with stage, yet do not stage any properties, slip starting at a particular stage did not work; the slip would not be turned on. The slip would only be turned on if one of the joint properties was also staged. This is fixed, now slip is turned on whether or not a parameter is staged.
10. Compute. For the case of variable Poisson’s Ratio, the code will check that calculated elastic parameters are sensible when the minor principal stress approaches to zero.
11. Modeler. Under certain circumstances, ponded water loads would flip direction on material boundaries when reading files.
12. Modeler/Interpret. The residual friction angle (phiR for Barton Bandis joint shear strength) does not show up in the joint properties table. Fixed.

Phase2 8.007 – November 28 2011

1. Interpret. Under rare circumstances node numbers on both sides of an excavated joint would be switched corrupting contours.
2. Compute. Fixed a problem with induced stress loading option for multiple excavation models.
3. Compute. Improved joint higher order formulation for better accuracy if it is used as interface element.
4. Compute. Fixed a problem for spring element if initial force option is selected.
5. Compute. Fixed a bug in liner shear forces for axisymmetric analysis method.
6. Compute. Improved discharge section calculation.
7. Compute. Fixed a problem with pore pressures in joints for SSR models.
8. Modeler. The "Include Weight in Analysis" option in the beam properties dialog was not being saved properly.  
9. Interpret. Interpret would sometimes crash with an error saying that it is unable to open cache file or will show blank screen when opening files with SSR analysis.

Phase2 8.006 – October 18 2011

1. Modeler. Now better handles the import of grids with negative pore pressures.
2. Modeler. Added the option to allow input of Phib (unsaturated friction angle) for pore presure grids.
3. Interpret. The tooltip will now show the info for the piezo line defined in the last stage for SSR.
4. Modeler. Joints in composite liners was active in axisymmetric mode even though axisymmetric joints have not been implemented in Phase2. It is now properly disabled.
5. Compute. Duncan-Chang model: The level of deviatoric stress is selected as the Loading-Unloading criterion. This proved to be a more stable criterion, especially in simulations that include self weight and settlement of layers of material.
6. Compute. Duncan-Chang model:  The simulations can start from a zero stress state, without crashing.
7. Compute. Generalized Hoek-Brown model: The brittle behavior in this model was improved (this was done for Mohr-Coulomb model as well).
8. Compute. Generalized Hoek-Brown model: Improved flow rule for materials with dilation. Derivatives of the plastic potential function are more accurately calculated.
9. Modeler. Fixed standard deviation being reset to 0 when user simply clicked on the variable type column.
10. Interpret. Minor fixes and improvements in beam graphing and data copying. Node number labels can now be toggled.
11. Compute. A bug with how Cam-Clay materials are written to the data file was fixed.
12. Modeler. Fixed a bug in the geometry cleanup code which didn’t properly prioritize boundaries that overlapped – the most recently added boundary now has priority when fixing overlaps, regardless of boundary ‘type’.
13. Interpret. Added “keep text horizontal” option to show values feature. This option is now ON by default and it prevents value labels from auto-rotating.
14. Modeler/Interpreter. Bug fixed: When there were too many stages and material properties being changed, the tooltip would overflow and cause an error message.  The tooltip now shows information about any changing properties in the next 10 stages only.
15. Modeler/Interpreter. Added joint network information to info viewer.
16. Modeler. Fixed bug in joint network dialog which would cause the incorrect window positioning due to the scrollbar when switching between multiple joint sets.
17. All. Fixed detection of another instance which sometimes would erroneously delete all temporary files thus causing troubles with undo, staging and mess up currently computing files.
18. Modeler/Interpret. Online Help would now launch in Internet Explorer if Google Chrome is the default browser. The online help does not properly work in Google Chrome.
19. Updated Help. New stress verification examples, numbers 30and 31, added to the Stress Verification manual in the Help.
20. Modeler. Improved the Voronoi joint network creator.Much smaller networks with more Voronoi cells can be created.

Phase2 8.005 – July 14 2011

1. Compute. Using effective K ratios with a groundwater analysis file did not work. Fixed.
2. Compute. Improved the Duncan-Chang and Cam Clay models.
3. Interpret. Improved drawing performance for models with very large number of joints.
4. Interpret. Disabled “Alternative Contour Generation” option in preferences. This option causes a significant delay when switching between data types and stages on lower end CPUs.
5. Modeler. When importing external boundary from DXF a warning about large coordinates relative to model dimensions was not issued.
6. Modeler. When meshing a model with joint networks directly from Mesh Setup the window advising user to clean geometry would not show. This can potentially result in program crashing or poor mesh that would cause the engine to abort computation.
7. Modeler. Improved Geometry Cleanup feature for very small models (less than 1 unit in both dimensions).
8. Modeler. Mesh generation for certain models of small dimensions (less than 1 unit in size) could produce bad mesh.
9. Modeler. Automatic geometry intersection and validation could fail for models of small dimensions (less than 1 unit in size).
10. Modeler. When deleting boundary vertices an error message will no longer pop up if less than 2 or 3 vertices left on polyline or polygon boundary – such boundary will be simply deleted.
11. Modeler. An error message will no longer pop up if a boundary has all coinciding vertices, fully or partially outside external. Such boundary or its offending segments will be simply deleted.
12. Modeler. Improved performance of post processing geometry editing operations, and file saving for models with large number (thousands) of interconnected boundaries.
13. Modeler. Prevented most crashes during meshing of models with poor geometry. An error message will now pop up informing user of failure and advising to run geometry cleanup.
14. Modeler. Expand/Shrink external would not check if user entered the same starting and ending points. An error message is now displayed.
15. Compute. Prevented crashes when opening files with joints that have invalid node numbering. Such meshes could be generated for models with bad geometry or with very dense joint network. The Compute module would now simply abort computations.
16. Interpret. Added differential stress data to available statistical data types.
17. Interpret. Added a progress bar for very large models when contour generation process causes significant delay.
18. Interpret. Sped up loading time for very large files with multiple stages and large number of joints.
19. Modeler. Sometimes right-clicking on a tool and selecting an option from context menu would not work.
20. Modeler. Improved performance of modeling with large joint networks and FEA groundwater analysis. Previously, applying new groundwater boundary conditions or changing material assignments for models with lots of joints could take a very long time.
21. Modeler.  Improved the composite beam node numbering for cases with slip.  Beams that tie into the composites are now properly numbered based on the stage in which the interface is added.
22. Modeler. Joint internal additional pressure was incorrectly being accumulated if multiple stages had additional pressure. Fixed.
23. Compute. Improved error handling for joint models with corrupted mesh. The engine would not crash anymore, but abort early during file reading with an error.
24. Compute. Groundwater hydraulic functions for simple model other than “General” soil type were not working in the engine. Fixed.
25. Modeler. Deleting SSR search areas through the menu did not work. Fixed.
26. Compute. A fix to the liner hinge.

Phase2 8.004 – June 1 2011

1. Fixed a bug that would cause the program to crash while importing properties from a Phase2 7 file.
2. Compute. Improved the option to reduce stiffness of joints when failed in tension.
3. Compute. The number of yielded joints was sometimes incorrectly written to file.
4. Modeler/Interpreter. Number of yielded joints was reported incorrectly in the Infoviewer and on the status bar for multiple stage models.
5. Modeler/Interpreter. Fixed a bug which didn’t allow custom resizing of property table tool cells and row heights.
6. Modeler. Statistical variables with standard deviation of 0 are no longer used in file generation for probabilistic analysis
7. Modeler. If user selected “Use GSI, mi, D” in statistical properties window, but didn’t add residual properties as variables, there was no way to define them later.
8. Modeler. Redesigned Hoek-Brown parameters calculator window to allow users to define and save peak and residual parameters separately.
9. Added residual Young’s modulus to the list of possible statistical variables.
10. Modeler. Selected value was not immediately visible when clicking on GSI chart window. Windows Vista and 7 only.
11. Interpret. About window would not show whether the application is 64 or 32 bit.
12. Compute. About window would not show whether the application is 64 or 32 bit and Parallel or Sequential.
13. Modeler. Fixed a bug where re-saving file with results would crash Interpret if user tried to open the file in it. This bug would only happen if a filename contains a ‘.’ in it.
14. Modeler/Interpreter. Added “stage name” to dynamic text for Textbox tool.
15. Modeler/Interpreter. Fixed a bug in the bolt properties table that displayed incorrect out of plane spacing
16. Modeler/Interpreter. Fixed a bug in the bolt properties table with Bolt Model type
17. Modeler/Interpreter. Added ability to see application of SSR for joints in the info viewer and joint properties table
18. “Compute (groundwater only)” would do both the groundwater and stress analysis. Fixed.
19. Compute. Fixed a bug in the implementation of changing modulus with depth.

Phase2 8.003 – April 28 2011

1. Show failed joints did not work properly.
2. Fixed.
3. Huge display spaces (large resolutions on large monitors) would have trouble rendering the CAD view. Fixed.
4. Joint node numbering for multiple intersections of joints at the same point on the external boundary now properly handled.

Phase2 8.002 – April 20 2011

1. Initial program release.