A pseudo-rigid-body model for initially-curved pinned-pinned segments usedin compliant mechanisms

The Pseudo-rigid-body model concept allows compliant mechanisms to be analy zed using well-known rigid-body kinematics. This paper presents a pseudo-ri gid-body model for initially curved pinned-pinned segments that undergo lar ge, nonlinear deflections. The model approximates the segment as three rigi d members joined by pin joints. Torsional springs placed at the joints mode l the segment's stiffness. This model has been validated by fabricating sev eral such segments from a variety of different materials. Testing of the fo rce-deflection behavior of these segments verified the accuracy of the mode l.