Maxsurf 20.00 V8i Release Notes

Maxsurf V8i Release 20.00 Notes

The following section describes the changes in Maxsurf 20 V8i suite of software

• 32-bit versions will run on Windows XP/Vista/7, and

• 64-bit versions will run on Windows 7 64-bit.

The windage profile may be displayed in Modeler.

The units dialog has been updated so that masses may be displayed in kilopound-force (kip).

Several new features have been added to the Markers which are designed to assist when fitting surfaces to large Marker datasets (for example from laser scans).

• The first is an option to color-code the Markers by their distance from their assigned surface.

• The second option is to hide markers that are below an acceptable distance from the surface.

The render mesh can now be exported in three new file formats *.obj, *.x and *.stl

• 7204: Correct second display of "Baseline" text in Vessel Type dialog if model has Frame of Reference displayed

• 7200: It is now possible to import STL files as a Trimesh model.

• 7165: The problem of when having selected “Feet and inches” units the measurements being shown in “Decimal feet” and vice-versa has been corrected.

• 7108: Symbol for knots has been changed from kts to kn across all apps according to ISO standards.

• 7097: An issue where the Frame of Reference and design grid was not getting scaled with the design using Quickstart has been fixed.

• 7093: An issue where trimming gets lost when merging designs has been fixed.

• 7052: An extruded linear surface has stiffness =1 (should be 2). Fixed.

• 7006: Crash in parametric transformation dialog if waterline length is 0m (i.e fully submerged). Fixed.

• 6739: When porcupines are displayed a modeless dialog will now be displayed for adjusting the porcupine length.

• 6737: Cutting surfaces are now duplicated when a surface is duplicated.

• 6893: Users are warned when trying to bond edges that have grouped control points.

• 6808: The Surface Areas dialog correctly accounts for surface visibility (invisible surfaces are omitted from the table)

Two new options have been added to the tank display.

• Transparent, shaded representation of the fluid-plane in the tank (or floodwater plane in the case of a damaged compartment) to be displayed;

• Cross-hatch of the tank extremities.

Some changes have been made to the MAXSURF cargo import dialog so that the data is the same as the Transport analysis input file (trninp.*).

A range of enhancements to the way the windage areas and underwater projected areas are defined and calculated have been added to the Maxsurf vessel model.

• Windage Groups

• The concept of a Windage Group has been added. This groups together model surfaces which should be treated as a single object.

• Wind direction

• The Windage direction specifies the projection direction used for the surfaces.

• Display

• In Maxsurf Stability, when the vessel is at the DWL, the normal windage profile view is shown and the wind profile groups may be modified.

• Effect of heel

• Maxsurf Stability has the option of using just the upright (zero heel) projected windage profile or calculating the actual projection of the heeled vessel.

• Criteria: Velocity profile wind heeling arm

• A new criterion wind heeling arm has been added that allows the definition of a vertical velocity to be specified.

The custom drafts have been extended to allow the draft to a user-defined datum to be measured.

The auto ballasting command now confirms the required and actual displacement, LCG and TCG.

• 7201: A problem whereby the loadcase item centroids were saved in the rotated reference frame (not Upright ship reference frame) has been corrected. This problem occurred if saving an individual loadcase to a .hml file with the vessel rotated to the results of an analysis. Saving the entire model to the standard Stability .hmd data file did not have this problem.

• 7169: Results for the areas and centroids of the windage and immersed lateral plane areas are now available in the Analysis results table (Display | Data format dialog)

• 7167: The effect of wind direction is now included in the velocity profile wind heeling arms.

• Tanks, compartments, non-buoyant volumes, etc. are now referred to collectively as Rooms.

• Some issues with the visibility of tanks in rendered mode have been fixed.

• Fixed issues with GHS imported models containing linked negative tanks, these now remain negative components when changing the parent rooms to compartments and back.

• Improved the "extent of damage" command which determines whether or not a room intersects a damage space; previously some false positives were generated.

• The “Add Keypoint” menu item now has the correct wording.

• 6967: A crash which sometimes occurred when exporting a GHS file for a model with lots of linked tanks, compartments and neg.linked compartments has been fixed.

• 6902: It is no longer necessary to select File | New when starting loadcases, room definition etc. Simply start adding (Edit menu or Ctrl+A) rows.

• 6889: The colour used to show damaged tank names has been corrected.

• 6815: The incorrect units for the Compact version of the cross-referenced heeling arm criterion: ratio of GZ above heeling arm has been corrected to % (from m).

• 6731, 6720: Keypoint labels are now the same color as the keypoints (to facilitate differentiation from Loadcase load items)

• 6647: Fuel densities according to ISO 8217 have been added to the standard list of fluid densities.

• 6359: The drawn Margin line is now properly refreshed when the Margin line data are changed.

• 5968: Section not forming correctly when Skin Thickness option is activated, model specific. Fixed.

A warning dialog will now be displayed when two plates created on the same surface overlap.

• 7058: Rhino files can be exported from Structure in two forms now. Firstly with all parts as NURBS surfaces, secondly with all parts as trimeshes. To execute choose File | Export | Rhinoceros 3dm file | NURBS Surfaces/Mesh Surfaces.

• 6959: Deducted frame not working correctly - model specific. Fixed.

• 6933: Inclined frames can now be exported to Rhino file.

• 6744: Stringers added on a surface in the section plane not rendering correctly. Fixed.

• 6715: String cutout not extending with stringer angle to frame. Fixed.

See Stability section for details.

A new Polar Graph view has been added where the plot shows the same selected result data plotted on the radial axis (against heading) with one curve for each of the speeds tested.

The Ochi Hubble two parameter spectrum has been added to the standard list of sea state spectrum.  

The model can now be placed at any attitude by using the trim and heel dialogs.  

• 7199: Motions has been corrected so that the Panel method meshing and analysis will work on a systems using the “,” character as the decimal delimiter instead of the “.” character.

• 7170: It is now possible to export the MAXSURF Cargo table as a .cgo file for loading into MAXSURF Stability.

• 7164: When searching for MAXSURF cargo files, “sacinp.*” files are shown by default instead of all files.

• Some issues with the data plotted in the Polar contour graph have been addressed.

• The maximum number of frequencies that can be calculated has been increased to 500.

• 7116: Roll phase was incorrect for Wave Excitation forces of a Panel method analysis.

• 6977: Added resistance for panel method is now calculated (Havelock method).

• 6931: COM interface has been updated with Panel Method functionality.

• 6918: User can now specify the upper and lower limits of the frequency range for motions to be calculated at.

• 6837: Adding incorrect parameters to a section in the library was displaying a blank dialog. Fixed.

• 6825: A water depth can now be set for the Panel method analysis.

• 6814: A problem which prevented calculation of added resistance using Havelock’s method has been fixed.

• 6777: Cancelling a panel method analysis part way through was leaving temporary files on disk. Fixed.

• 6754: A problem with the COM commands for adding remote locations has been fixed.

• 6750: A better estimate of the range of frequencies to be covered is now used for a vessel with forward speed in following waves. This results in more results in the frequency range of interest.

• 6695: Ocraflex Drift Force File export has been added to the File | Export menu.

• 6658: Ocraflex motions files can now be exported directly from Motions via the File | Export menu.

• 6503: Angular velocity and accelerations are always given in rad/s and rad/s/s, irrespective of user selected units for angle or frequency.

A new barge resistance algorithm has been implemented.

We greatly appreciate any bug reports or suggestions you may have. Please report any bugs or anomalies you find through www.bentley.com/serviceticketmanager