This webinar was originally presented on December 5, 2013.
You can view the recording online in the On-Demand Video Library (Click Here).
The following are the product-related questions and corresponding answers from the webinar.
- Q: I have Maxsurf Advanced Suite, but not Multiframe - can I add Multiframe to my license?
A: Multiframe is included in a Maxsurf Advanced or Maxsurf Enterprise quite, however it is a separate download form the Bentley web site. Search for Multiframe at selectservices.bentley.com.
- Q: Can one import a pressure loading from a CFD program and map it to the FE model in Multiframe?
A: This is not possible at present. It is possible to apply pressure loads to hull plates but there is no automated import.
- Q: Can sections in Multiframe can be naval bulbs?
A: Yes, the sections libraries which come with Multiframe and Maxsurf include bulb flat sections (also called Holland Profiles in some countries). This is also a standard shape type in ShapeEditor and when creating custom shapes.
- Q: Are there marine loads already standardized by the Class?
A: Multiframe includes automatic hydrostatic, wind, and current load cases. Member, plate, and nodal loads can also be added. Standard class loads can be created from combinations of these loads.
- Q: Why only triangular mesh?
A: We tested both triangular and quadrilateral plate elements in our implementation and found that triangular elements not only gave equally good results, but provided simpler meshing.
- Q: Can I import models from other systems?
A: Yes, Multiframe supports import of DXF and DWG models from various CAD systems. They can be imported as members, a background image, or as construction lines for plate mesh generation.
- Q: Can all the modeling and loading be applied to high speed composite craft?
A: Yes, Multiframe is equally applicable to steel aluminum and composite structures. ShapeEditor can calculate section properties of composite structural shapes by setting one material as the reference material.
- Q: Is it possible add stiffeners to a patch in both directions?
A: Yes, the generate command can add longitudinal, transverse, or oblique stiffeners to any plate panel.
- Q: Can you load a model with a horizontal wave bending moment?
A: Yes. When applying hydrostatic load using a wave profile, you can control the direction of the wave to cater for both longitudinal and transverse waves.
- Q: Can buckling be analyzed?
A: Yes, at this stage Multiframe can do buckling analysis of beam element structures. Buckling of combined beam/plate structures is planned for the future.
- Q: Is it possible to import construction from ShipConstructor for strength analysis?
A: Yes. Multiframe imports both DWG and DXF data so either the construction lines or production part lines from ShipConstructor can be imported into Multiframe for meshing.
- Q: Is it possible to obtain bending moments and shear forces at cross sections of ship when sea pressure/waves are applied?
A: Yes. In Multiframe, you can apply a wave profile to apply the hydrostatic forces for hogging or sagging for a full structural mesh. In Maxsurf Stability, you can perform traditional longitudinal strength analysis which will calculate moments and shear along the vessel length.
- Q: Can we export a mesh to other FEA programs?
A: At this stage, export includes DXF, DWG, SDNF and Bentleys ISM (Integrated Structural Modeling) file formats. Generic FEA mesh formats may be supported in future.
- Q: What lies ahead for Workshop/Maxsurf Structure (near future and long term)?
A: We will continue to focus on making Maxsurf Structure cover more types of structure (e.g. enhanced longitudinal bulkheads), as well as expand its integration with Multiframe. Our intention is to continue to focus on naval architectural design and not on the production and detailing functions found in shipbuilding systems like ShipConstructor and Tribon.
- Q: Any plans to add fatigue analysis?
A: Fatigue analysis can be found in our SACS offshore structural analysis system. We do not plan to add fatigue to Multiframe.
- Q: How do we get the continuing education credits? How can I get a certificate of attendance of CEU's?
A: Bentley Learning Units (BLU), Bentley Institute’s equivalent to Professional Development Hours (PDH), are granted for the live and recorded webinar. Within 2-4 weeks of watching the presentation, Learning Units are added to your transcript. To access your transcript, go to www.bentley.com/mylearninghistory. On the "My Learning History" page, there is a detailed how-to guide related to Learning Units and transcripts, in addition to the link to the user’s online transcript. In most states, users can submit their Bentley transcripts for consideration for continuing education credit toward their registration renewals.
- Q: How do I view this webinar again or share it with a colleague?
A: This event has been recorded and you can view the recording by clicking here.