Fig. 6
From: Spline-based specimen shape optimization for robust material model calibration
Example of the isotropic plain specimen: definition of the two design variables. First design variable: displacement along y of the 4 left control points. Second design variable: displacement along y of the 2 right control points. A \(C^0\) line was added at \(x = 100\) mm. In light gray, the initial shape (\(h(x)=100mm\)) and; in dark grey, the result of the optimization process (\(h_{opt}(x)=16.67mm\))