Ansys Not Using All Ram

[Sergei Chime]

Thefile I am opening is a .cdb file with two parts, both volume mesh bodies. I open it using external model with units set to Metric (kg, mm...) because the assembly is only 60 mm long. I run the setup module in External Model to the Model box in Mechanical Model. The dimensions are correct in this model. In addition to the Units for the project being set to the earlier Metric(kg, mm...) scale, the Length Unit field in the Properties of this model are set to mm.

I then connect the Model to the Geometry file in a Static Structural system. When I open the Geometry module, I see that the area measurements in Spaceclaim are far too large (though the units are still mm). This can be confirmed when I open the Model section of the Static Structural model. In this module, even though the units are still mm, the dimensions have been all scaled up. For example, the length of the assembly is now 80m when converted instead of the desired value of 80mm.

In the Geometry module, I do nothing except move the assembly to the origin of the global coordinate system and make some Named Selections; nothing to do with resizing the model. Even if I do absolutely nothing in the Geometry section, the same problem arises. As far as I know, I haven't messed with any other settings that could be changing the dimensions like this. This problem is persistent when starting a new project or reimporting the .cdb file.

Additionally, if I set the Length Unit field in the first Model in the Mechanical Model to be "m" instead of "mm", I get a similar issue. The assembly is 0.08mm long in the Model in Static Structural instead of 80mm like I wanted, or 80m like it was earlier. If I do it in cm, the final length is 800mm. Similar disrespecancies also appear in Spaceclaim.

Does anyone know how to fix this issue with ANSYS automatically resizing a model when I don't want it to? I would really appreciate it, this seems like a silly thing to be stuck on but I can't figure out how to fix it.

The 3-matic types that can export volume meshes are, to my knowledge, .inp (ABAQUS), .cdb (this one is actually just called ANSYS in the export menu but it has the .cdb extension. It does export directly to .cdb. I've also tried .iges and .stl to retroactively fill in the surface meshes, but that didn't work for my geometry), .mphtxt (COMSOL), .msh (FLUENT), .nas(Nastran), .out(Patran), and .fem (FEM). I used .cdb because it seemed to be specially made for ANSYS.

No, I am not opening the file in SpaceClaim; I'm exporting the assembly/model to ANSYS workbench through the External Model module, then opening it in ANSYS Mechanical in the Mechanical Model module (this is required to set the body materials, or I can't move on), and then opening it in SpaceClaim in the Static Structural module.

After importing the geometry into DM and generating the model, I can see the global variables and I am able to export them to Workbench as input paramters to use them in a parameteric analysis to determine the change in capacitance with the electrode dimensions. I'm also able to connect this to Maxwell, set up my simulation conditons and export output parameters (capacitance matrix) to the WB.

The issue that I'm seeing with my parametric analysis is that only DP1 updates and all remaining design points seem to show the same solution. I've noticed that the geometry in Maxwell does not refresh/update after the first design point and the following error shows up in Maxwell

[error] Link parameter 'P3@DS_SQ' in source system 'Geom' is mapped to constant '1' in target system. Map the link parameter to a design variable or project variable in the target system to enable synchronization. (4:09:29 PM Aug 15, 2018)

It seems that SolidWorks 2017 is not supported in PlugIn Mode with Workbench 17.2 as per the documentation. So ideally first step would be downgrading your SolidWorks version to 2015 or 2016 to work with R17.2. Alternatively, you can also upgrade your ANSYS Workbench version to anything from R18.0 to R19.1 to work with SolidWorks 2017 in the plugin mode.

The issue is not with the Solidworks version but rather with the fact that Maxwell requires you to define local variables for all your geometry parameters from Design Modeler so that you can parametrize them from WB

hi wallygator88,I have met the same issue as you have , and i am really happy to know that you have found the answer , i want to know if i should define local variables name in maxwell exactly the same as the ones in SW? like you issue, the parameter 'DS_SQ' should be define in maxwell? even though it has no meaning in maxwell?

Hey i dont know if it really helps, but i have a similar problem. Look into page 1333 of the Maxwell Help Release 2020. When you click on your imported geometry, you go to properties and there u put a new local variable into the value of the imported parameter.

Do you know how to make the imported parameter and the maxwell parameter automatically equal when running an optimization? In your picture for example your design point 0 is P1 dist=0.5 and P3 dist=0.5. When I start an optimzation, ansys put new design points for example -> P1 dist=0.3 and P3 dist=0.65, but they need to be equal.

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I've recently downloaded the Educational edition of Creo 7.0 in order to attend mechanical design classes in my collage. During the installation I had the Ansys Simulation product available so I checked the box and installed it as the rest of the apps and extensions.

Thanks for your quick answer Alex, So as Ansys Simulation is not available, do you know if I would be able to take a 3D model created with the educational version of Creo and then go to Ansys Student and analize it there? Would there be compatibility between both educational versions of Creo and Ansys?

Instead of converting to a step file and opening in ANSYS workbench, could you install the associativity link using ANSYS CAD Configurator and import a model into ANSYS workbench (vers. 212) directly from Creo (7.0). Apparently this should work normally (not working for me). Unsure whether the student version retains this functionality???

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