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Dynamic Model for Compliant Mechanism with Long Flexure Hinges  

Choi Kee-Bong (한국기계연구원 지능형정밀기계연구부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.3, 2005 , pp. 61-67 More about this Journal
Abstract
A dynamic model for flexure hinge-based compliant mechanisms is derived. The dynamic model of the previous works do not well describe the behaviors of rigid bodies in the compliant mechanism when the length of the flexure hinge is long. In this study, the effect on the length of the flexure hinge is pointed out and then the dynamic model is derived to overcome the length effect. For verification, modal analyses are carried out using the proposed dynamic model and FEM (Finite Element Method). Finally they are compared by the terms of modal frequency. As the result, the proposed dynamic model can be used in design and analysis of the compliant mechanism.
Keywords
Compliant mechanism; Flexure hinge; Stiffness matrix; Modal analysis;
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