Fig. 7From: Deformation model and experimental evaluation of a contractable and bendable wire-pulling mechanism with embedded soft tubes for a robotic tonguePictures of deformation pattern (a) when only \(l_1\) is pulled. The plasticizer is used at 100 wt%. The yellow line indicates the neutral arc line l on the surface of the deformable part predicted by the deformation model. Note that the red line on the surface of the prototype does not match the neutral arc line in the plane where the wires exist because the prototype does not deform uniformly in the Z-directionBack to article page