Blog Post

Retainer for electrodynamic Drive

Sarholz Engineering • 12. Juni 2024

Topology Optimization of a Retainer to Reduce Mass and Increase Stiffness in the Drive Direction


Original Design:

FEM

The original design consists of a V-Shaped Profil that holds a diaphragm, and a Ring connecting the retainer to 4 driven carbon fiber rods.

  • Material: Nylon PA12
  • Process: 3D-Printed (SLS)
  • Weight: 1.52 g
  • max displacement: 0.7mm


Improved Design:

Stress Simulation

 

 It was found that only two of the carbon fibre rods need to connect to the retainer resulting in a significantly lighter overal design. The shape is optimized for minimal compliance.

 

  • Material: Nylon PA12
  • Process: 3D-Printed (SLS)
  • Weight: 0.41 g (reduced by 73%)
  • max displacement: 0.01mm (reduced by 98%)

 

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