Dynamic Analysis of Compliant Mechanisms

Abstract

A systematic method for dynamic analysis of compliant mechanisms is presented including basic formulations for natural frequencies, modes, dynamic response, and frequency characteristics. Methods for design sensitivity analysis are developed to investigate the effect of various design parameters on the dynamic performance of compliant mechanisms. A micro compliant stroke amplifier mechanism, for MEMS actuator application, is presented as a design example to demonstrate significant differences between static and dynamic performance of compliant mechanisms.

Dynamic analysis of the precision compliant mechanisms considering thermal effect

“…Lin et al [14] approached the dynamic response of flexure-based micro-positioning stages by transforming the infinite degree-offreedom system into a lumped parameter model with a finite number of degrees of freedom. Li and Kota [15] presented a dynamic analysis of a microcompliant stroke amplifier mechanism. The results demonstrated that there were significant differences between static and dynamic performances for the mechanism.…”

Design and Development of Class 2B-lpl Compliant Constant-Force Compression Slider Mechanism

“…Designing CMs for specific applications can be a complex problem with many considerations. The basic trade-off is between the flexibility to achieve deformed motion and the rigidity to sustain external load [5]. The pseudo-rigid-body-model (PRBM) technique is a design tool that approximates the force-deflection relationships of CMs by assigning a rigid-body, lumped compliance counterpart to every flexible segment comprising the mechanism [2].…”

Accuracy Assessment of Pseudo-Rigid-Body Model for Dynamic Analysis of Compliant Mechanisms

“…Pei et al [23] proposed a new method to establish PRB models for beambased compliant mechanism, where the behavior of parallel linear spring stage beams are imitated by a rigid bar with two pin-joints. Li and Kota [24] studied dynamics analysis of compliant mechanisms including natural frequencies, modes, dynamic response, and frequency characteristics, by using the finite element method. Zhao et al [25] developed a dynamic model based on Lagrange equation for a compliant linear-motion mechanism, then investigated the effect of material properties, shape parameters, and geometric parameters on natural frequency for providing quantitative insight to designers.…”