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Solid FEM: a stress check of one part

Switch on the Solid FEM add-on, mesh a part, pick fixed faces and a load in the 3D view, solve, and read displacement and von Mises stress on the model.

Written for PartCraft 0.9. The same help is inside the app: press F1.

What you'll do

Check one solid part under a load: where it moves and where the stress is highest. The study is linear and elastic, so it is a checking aid; your engineer reviews the results.

Steps

  1. Choose Settings › Add-ons and switch on Solid FEM (it is off until you do). Open the Solid FEM tab in the right panel.
  2. Under Material choose one, or Custom and type Poisson ratio, density and yield stress.
  3. Press Add fixed faces, click the faces that are held in the 3D view, then press Done picking.
  4. Add a load with Add force, Add pressure or Add gravity and pick its faces the same way.
  5. Press Mesh the part, then Solve. Choose Natural frequencies under Study first if you want frequencies.
  6. Read Results and Warnings, then press Show on the model to draw von Mises stress, displacement or a mode shape; Remove the plot takes it away.

Notes

  • The page solves up to a fixed number of elements; the status line says when your element size is too fine.
  • Stress at fixed faces, load points and sharp corners grows as the mesh is refined. Refine and compare before relying on a peak.
  • Every change is one undo step, and the settings are saved in the part file.
  • For yielding and contact studies see Check stress and deflection.