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Debugging and Troubleshooting of FEM Model: Bonnet Rigid Analysis

This document outlines the debugging process for a finite element model (FEM) of a rigid bonnet. Key issues identified include maximum displacements of 0.22 mm and various modeling errors. Areas for review include thickness values, forces, and material properties, particularly concerning glue and hex elements. Specific modeling errors highlight constraint rotation issues, load and SPC mismanagement, incorrect property assignments, and missing material properties for steel. It is crucial to ensure the correct degrees of freedom are set for all constraints.

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Debugging and Troubleshooting of FEM Model: Bonnet Rigid Analysis

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  1. Test – debugging an FEM model File: bonnet_rigid.fem

  2. Test – debugging an FEM model

  3. Test – debugging an FEM model

  4. Test – debugging an FEM model Max. displacements (magnitude): 0.22 mm

  5. Test – debugging an FEM model • Check everythingexcept: • Thicknessvalues • Forces • Material (glue; hexaelements)

  6. Test – debugging an FEM model Modeling errors: 1. Constraintprohibitsrotation of dof 5 2. Loadstep: Load and SPC aremixedup 3. Prop_edgereads PSOLIDS (shouldbe PSHELL) 4. Prop_hexareads PSHELL (shouldbe PSOLID) 5. Component Edge ismissingproperty 6. Material steelismissing E and nu

  7. Test – debugging an FEM model Modeling errors: 7. SPC issettodof 5, shouldbedof 3

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