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Static Simulation · Lesson 5: Optimize and focus the analysis

Dimension optimization under constraints and submodeling of a critical area.

Lesson goal

Make the analysis work for you: lighten a part while meeting the constraints, and study one area in detail without recalculating the whole assembly.

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2 videos

✎

1 exercise

Advanced

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Prerequisite: Lessons 2 to 4

1. Watch the videos

Dassault Systèmes videos hosted on MySolidWorks: they open in a new tab and a free account is enough. Watch them in order.

The Optimization ProcessVideo 1▶The Optimization ProcessVary dimensions to reduce mass while meeting stress and displacement constraints.↗ SubmodelingVideo 2▶SubmodelingRecalculate a part of a large assembly with a fine mesh, based on the global results.↗

2. Key takeaways

1

An optimization study combines variables (dimensions), constraints (max stress, displacement) and a goal (minimum mass).

2

Limit the number of variables and their ranges: each combination is a full analysis.

3

Submodeling takes the displacements of the global model at the boundaries of an area, to recalculate it in detail.

Tip

Run the optimization first with a coarse mesh to find the right region, then check the chosen solution with a fine mesh.

3. Do the exercise

On the bracket from the previous lessons:

  • use the thickness and the bend radius as variables
  • require a factor of safety of at least 2
  • look for the minimum mass
✓To check: Recalculate the proposed solution with a fine mesh: the factor of safety must stay above 2.

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