Flat Switches
These switches were both optimized to be very flat. There were no stress stiffening considerations.
Minimum Stress Stiffening Switches
These switches were all optimized for minimum stress stiffening, with no constraint on flatness. The different designs are different local optima, obtained by varying the volume of material allowed for design.
Minimum Stress Stiffening Switches with Strict Flatness Constraint
These switches were all optimized for minimum stress stiffening, but were constrained to be very flat. Material removal around the central part of the membranes provides this compromise.
Minimum Stress Stiffening Switches with Loose Flatness Constraint
These switches were optimized for minimum stress stiffening, but were constrained to be somewhat flat. Material removal around the central part of the membranes as well as around the anchors provides this compromise.