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  1. 1 like
    Hi, exporting solver deck from Hypercrash will include names of parameters.
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    Based on the limited information provided, we really can't offer much in terms of help. The possible problems are to many to discuss here. Rather than start with a full vehicle model, you should be just the front and rear suspension separately. Using this method, you can use the half-car events to fully debug your model before going to complex full vehicle simulation. When we assemble the full vehicle model, we first run simple events, like straight line acceleration and straight line braking. If the model looks good with these events, then we run events like constant radius, and swept steer. Only when the model is fully debugged, do we look at running events like lane change.
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    No thickness information within element dataname. You have to look for the property of element.
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    There are multiple ways to do it. This one i feel is one of the straight forward ways. Please do the following steps. 1. Select all the faces . 2. Go to Body > Create > From Faces > Duplicate and make non shared faces 3. Select Ok This will create tri elements of the outer surfaces. Thanks Siddharth
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    In TuMan, please try File / Export Binary instead of File / Export ASCII. I could reproduce the problem you had with .ida. The geometry may still be valid, but those messages are disconcerting. When I export in binary format from TuMan, things are fine.
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    If you are using Student edition, then you may not be able to use the point release. Please check the details below for the research license. https://altairuniversity.com/researcher/success-is-the-ability/
  9. 1 like
    If you are a commercial customer then please upgrade to HW Desktop 2019.1 (hotfix is 2019.1.1)and for solvers OptiStruct 2019.1 (hotfix is 2019.1.1)
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    As mentioned above this is available with OptiStruct 2019.1 version. In OptiStruct the MATVE bulk data entry defines the material properties for Viscoelastic materials. MATVE is only supported for Small displacement nonlinear static and transient analysis.& Solid elements both first and second order (CHEXA,CTETRA,CPENTA,CPYRA) are currently supported.Let me know if you need the demo file for same.
  11. 1 like
    Currently shell and membrane for MATHE is not supported.PFA highlights of OptiStruct 2019.1.
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    Defines the properties of nonlinear hyperelastic solidelements, referenced by CHEXA, CPENTA, and CTETRA Bulk Data Entries. The MATHE hyperelasticmaterial can be referenced to define corresponding material properties.
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    Either the PSOLID or PLSOLID Bulk Data Entry can be used to reference the MATHE Bulk Data Entry.
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    Hello I modify some things Please copy these modified files and overwrite the old ones If something's wrong, simply backup original files and let me know issuesReports_modified.zip
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    Thank you for sharing the PDF @ydigit, I have outlined the steps I took to resolve this in forum post attached below: Thanks
  16. 1 like
    Hello, To anyone that may come accross this post with the same issue. To resolve this, I have been using the following method: 1. Create 2D HyperMesh (HM) shell 2. Export solver deck - CFD - Nastran (Fluent standard format) 3. Import into Virtual Wind Tunnel (VWT) 4. Set up CFD simulation, but do not move model, only move the wind tunnel, otherwise the nodal coordinates between VWT and HM will not correlate. If you need to rotate/angle your model in a particular way to the flow (which travels in the positive x direction on the XY plane), then you should do this in HM before exporting your solver deck file 5. Run CFD 6. Open HyperMesh and import .log file 7. Turn off all components other than the surfaces you wish to obtain to nodal pressures for 8. Open the 'Contour' panel, change the 'Result Type' to 'Pressure'. Click Apply 9. Click on the 'Results' drop down from the menu bar' - select 'Query' 10. Ensure 'nodal coordinates' and 'Contour (pressure)' are selected on the panel on the left hand side. Shift+drag to select all the desired nodes in the graphics area 11. Select export. Save the .csv file 12. Open this in excell, delete the first two rows. Export as a .txt file 13. Open the .txt file and ensure there are no commas seperating the values, if there are, then use the replace function and replace all commas with nothing (so they are deleted) 14. Open HyperMesh, go to the the Pressure panel. Select entities - elements - drag and select all surface elements. Select linear interpolation - file -> .txt file - search radius ~ 0.005 (if your units is in m). Nodes on face - drag and select all surface nodes. Select create. Hope this helps Thanks
  17. 1 like
    Alex, It has been a while since you asked that question. I don't know if you still need help. If you do, please check Analysis -> Preserve nodes see if there are any preserve nodes in your model. HM would automatically delete those once you transfer any preserve nodes to normal nodes.
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    Use MATHE card.PFA screenshot for same.
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    Yes, i wasnt sure which type of elements you are using. For Solid Elements the Input for MORIENT is not necessary, the initial penetration is always pushed out. So to get your deck working it should be sufficient to define a CONTACT Card and leave MORIENT blank.
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