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1、Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST (Meshing process from geometry to volume mesh)Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCAS
2、TMeshCAST OutlinesThe goal of this tutorial is to show the typical Meshing flowchart using MeshCAST :Geometry Environment (.gmrst files)Surface Mesh Environment (.sm files)Volume Mesh Environment (.mesh files)Available files are :Casting.igs: 3D CAD definition of the casting componentCup.igs: 3D CAD
3、 definition of the pouring cupGating.igs: 3D CAD definition of the gating systemTutorial.gmrst: Tutorial geometry in .gmrst format Tutorial.sm: Tutorial geometry in .sm formatTutorial.mesh: Tutorial geometry in .mesh format1Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. Al
4、l rights reserved.Getting started with MeshCASTMeshCAST Launching and setting up MeshCAST1Use the explorer to go to the right location (where CAD files are)2Click on the MeshCAST Menu3Properties Advanced 4Set up the CAD reading tolerance 2Copyright ESI Group, 2009. All rights reserved.Copyright ESI
5、Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (1)1File Open2Set up the type of file3Choose Casting.igs and Open You are now in the Geometry environnement of MeshCAST (.gmrst files)3Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009.
6、 All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (2)4 Check geometry (to check topology is correct)5Set up the edge length and press Enter to validate6 Generate Surface Mesh (Input Window should be empty in order to mesh all edges)7View the Mesh8Check the Mesh9Save the
7、 Gmrst file4Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (3)Repeat steps 1 to 9 for : Cup.igs with Edge length=5 mmGating.igs with Edge length = 4 mmYou have then at this stage 3 .gmrst files
8、:Casting.gmrstCup.gmrstGating.gmrstWe will now assemble these 3 geometries 5Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (4)1FileOpen Select Casting.gmrst 2Import/Export panel Import Geom 3Bro
9、wse Gating.gmrst and then Execute 4Repeat Step 3 with Cup.gmrst and then Quit 6Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (5)1FileSave as, Enter Tutorial , then Save .The goal is now to defi
10、ne the interfaces (yellow multiple edges) between : Gating & CastingGating & Cup32FileOpen, Choose Tutorial.gmrst 7Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (6)1Select All Edges2 Automerge
11、, define the tolerances, then Execute 3 Remove Coincident faces 4Select 2 edges and Identify the attached surface5 Add Edges in the Surface Operations area to add the selected edges to the Input surface (surface #2 here)Gating/Casting interfaceCup/Gating interface8Copyright ESI Group, 2009. All righ
12、ts reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Geometry Environment (7)1 Check Geometry shows now the multiple edges in Yellow (interfaces)2 Generate Surface Mesh with no input in the input Window (to mesh all)3 Show Mesh , then Check Mesh to check M
13、esh is ok4 Go To Volume Meshing 9Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Surface Mesh Environment (1) You are now in the Surface Mesh environnement of MeshCAST (.sm files)1 Check Mesh checks the surface mesh
14、quality and shows the multiple edges in Yellow (interfaces)2 Check Intersection checks the possible intersecting elements (real intersecting or flat elements)10Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Surface
15、Mesh Environment (2)1Go in the Tet Mesh panel2 Generate Tet Mesh with default options for Aspect Ratio and LayersOnce you are ok with the surface mesh (Surface mesh seems ok , Total of possible intersections si 0), You are ready to run the volume mesher 11Copyright ESI Group, 2009. All rights reserved.Copyright ESI Group, 2009. All rights reserved.Getting started with MeshCASTMeshCAST Surface Mesh Repair (1) The Surface Mesh Repair slides are not needed for the files of the tutorial. This is just shown as an example.1 Check Mesh shows bad elements.2 Autofix tool automaticall
