General Mechanical

General Mechanical

2D Static Analysis in Workbench with APDL Meshing (18.2)

    • petergrohs
      Subscriber

      Is it possible to connect Finite Element Modeler to Static Structural (Model) and retain 2D analysis?


      I'm attempting 2D fatigue analysis of a simple axisymmetric part in Workbench 18.2, but I'd like to use Mechanical APDL for meshing. I have no issues connecting the 2D DesignModeler geometry to APDL for meshing, and then connecting APDL to Finite Element Modeler, but when I connect FE Modeler to the Model cell in Static Structural the analysis reverts to 3D and cannot be changed.


      I know it must be possible to connect an APDL mesh in Workbench but I can't get past this step. The modules are configured as follows.



      • DesignModeler Geometry: 2D analysis type, simple rectangular surface in XY plane ("Add Frozen"), bounded by positive X & Y axes, thickness = 0

      • Mechanical APDL: PLANE182 elements, Element behavior = Axisymmetric, basic Smart Size mesh, Archive Model > Write > Data to Archive = DB

      • Finite Element Modeler: default settings, reads and correctly displays APDL mesh, import errors attached

      • Static Structural: FE modeler connected to Model cell (Geometry cell disappears)


      This results in 3D analysis in Mechanical. The bounding box in Mechanical reports "Length Z = 0" and thickness is 0. The mesh does imports correctly. However the analysis type cannot be changed from 3D which prevents the axisymmetric analysis I'm looking for. How can I force Mechanical to remain 2D while importing an APDL mesh?


      For testing purposes I connected the FE Modeler module to the Geometry cell in a separate Static Structural module. This automatically generated a Parasolid model in FE Modeler and allowed me to select 2D analysis for Mechanical. However the mesh was not imported, which eliminates this as an option. 


      Any ideas? I need to force 2D analysis in Mechanical when connecting an APDL mesh via FE Modeler. Although other solutions are welcome. I have only a rudimentary understanding of APDL at this point. 

    • petergrohs
      Subscriber


       

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