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Now that you know how to run Field Optimization in nTop, try this optional problem and compare your workflow to our solution in the next lesson.

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Problem Statement

Using the Inner FE Mesh and Outer FE Mesh variables in the starter file, set up and run a Field Optimization to generate a latticed wrench. Minimize structural compliance of the part under the loading conditions below while constraining the inner body to a volume fraction of less than 0.3.
  • Apply a Force (yellow arrows) of 10,000N in the negative x direction to the area selected in the provided Force Boundary
  • Apply a Displacement Restraint (red cones) to the wrench jaw profile
While setting up your model, use a Tie Constraint to connect the inner Parametric Lattice Component and solid outer component. Use the following inputs to define the inner lattice component: 
  • Face-centered cubic unit cell
  • Conformal Boundary behavior
  • 2 mm Cell size
  • 0.3 mm Min thickness
  • 0.8 mm Max thickness
Pull the optimized implicit bodies from the Field Optimization block into your notebook and use Boolean operations to generate your final part.
Estimated Time to Complete: 20 minutes
Tip:
Use an FE Region by Body nested inside a Volume Fraction Response to isolate the inner body to constrain to a specific region.
Example File: 440_20_Starter — Field Optimization Test Problem.ntop Report File Issue This file was last updated in nTop 4.16.3