Dynamic Behavior of Compliant Slider Mechanism using the Pseudo-Rigid-Body Modeling Technique

Abstract

This work explores the use of the pseudo-rigid-body model to predict the dynamic behavior of compliant mechanisms. Based on the principle of dynamic equivalence, a simplified dynamic model for the compliant slider mechanism was developed using the pseudo-rigid-body modeling technique. Simulation results shows a very interesting discovery that there exist a range of frequencies over which the compliant slider mechanism exhibits better constant-force behavior than it does statically. For instance, at a frequency of 51 rad/s the compliant slider mechanism yields a median force of 307.62N with a force variance of ±3.9N, which is much better than the ±19.2N the device demonstrates statically.