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1、Export a surface file to Ansys

2、After you have calculated a surface mesh and remeshed it to make it suitable for FEA purposes, you can export this surface mesh to an Ansys file. To do this, go to the Export menu and choose Ansys. This will open following interface:

3、Mimics can export your remeshed 3D object to Ansys as an Area-based or an Element-based file

4、Area-based: Each triangle is exported as a separate face into the ansys-file.  Importing this file in Ansys will result in a remeshing of the file, and will loose the original triangulation.
Element-based: The part is exported as a mesh, having triangles as elements.  To generate the volume mesh in Ansys, the FVMESH command should be used.

5、We advice you to use the Element-based export as this will preserve the obtained quality of the mesh. To export add the object to the list, choose the appropriate Ansys File format and click on the OK button.
Convert a surface mesh to a volumetric mesh in Ansys
This surface mesh can be imported in Ansys by going to the File menu in Ansys and choosing “Read Input From”.

6、Convert an Area Based surface mesh to a volumetric mesh
First select an element type to which you want to assign the surface mesh.  You can do this with the ET command e.g. ET,1,SHELL93. Or in the main menu select Preprocessor | Element type | Add/Edit/delete and add a surface element type.
To mesh the areas to elements, go to Main Menu > Preprocessor > Meshing > MeshTool. In the MeshTool check smart size and put it to coarse. Select as mesh Areas and as Shape Tri and free.

7、Click on Mesh, the Mesh areas dialog pops up. In this dialog click on pick all.

8、To release all associations between the current solid model and finite element model, execute the command, MODMSH,detach.
Add a solid element type to generate your volumetric mesh, you can do this with the ET command e.g. ET,2,SOLID92. Or in the main menu select Preprocessor | Element type | Add/Edit/delete and add a solid element type.
If you want to load your volume mesh back into Mimics for material assignment you should use one of the following element types:
SOLID72 (linear tetrahedron)
SOLID92 (quadratic tetrahedron)
If you require other elements types, please let us know and we will try to implement those elements in our future releases.
To generate the volume mesh you should use the command FVMesh or you can execute this command from the main menu Preprocessor | Meshing | Mesh | Tet Mesh From | Area Elements.

9、Convert an Element Based surface mesh to a volumetric mesh
In Ansys select File | Read input from and load the file

10、The surface element type is Shell93 by default.
Note: If desired you can change the surface element type with the command ET, ITYPE, Ename, KOP1, KOP2, KOP3, KOP4, KOP5, KOP6, INOPR (e.g. et,1,Mesh200)
Add a solid element type to generate your volumetric mesh, you can again do this with the ET command e.g. ET,2,SOLID92. Or in the main menu select Preprocessor | Element type | Add/Edit/delete and add a solid element type.
If you want to load your volume mesh back into Mimics for material assignment you should use one of the following element types:
SOLID72 (linear tetrahedron)
SOLID92 (quadratic tetrahedron)
If you require other elements types, please let us know and we will try implement those elements in our future releases.

11、To generate the volume mesh you should use the command FVMesh or you can execute this command from the main menu Preprocessor | Meshing | Mesh | Tet Mesh From | Area Elements.
Import Ansys files in Mimics
As stated in the Mimics help file, the Mimics Ansys importer needs three different ASCII files as input. These three files are the PREP7 file, a file with a list of the elements and a file with a list of the nodes. More information about these three files can be found further in this document.
Mimics requires the user to import only the PREP7 file: Mimics will use the references to the two other files in the PREP7 file. To import the PREP7 file, click on the Import button in the FEA project management tab:

12、This will open a file chooser:

13、Change the type of the listed files from Patran Neutral to Ansys File and all files will be shown (Ansys files do not have a general extension).
Then browse to the directory where the files are located, select the PREP7 file and click on the Open button, the files will be imported.

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