For the Nüesch Engineering AG (Zurich) was a FEM-Calculation made. The lever of breast milk pump had to be improved and the weakness in the middle removed.
After a trough analysis of the problem was it decided to change the material and strengthen the structure on the most vulnerable place.
The kink in the middle of the lever turned out to be a vulnearability.
Niederberger created FEM-analyses, to optimizes the pump lever.
Left: stress - as expected in the middle of the lever
Right deformation - on the under half of the pump handle
After an analyse of the problem we took the decision to use another matter and strengthen the lever on the critical area.
This project was one of our first activities in synthetic material technologies.