Frontiers of Mechanical Engineering >

2010 , Vol. 5 >Issue 3: 294 - 301

DOI: https://doi.org/10.1007/s11465-010-0019-8

Research articles

Modeling of large-deflection links for compliant mechanisms

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  • College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China;

Published date: 05 Sep 2010

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Abstract

The traditional pseudo-rigid-body model (PRBM) has one degree of freedom (DOF) and performs a good simulation to the tip locus of flexible links for compliant mechanisms on the basis of a parametric approximation method. In this study, a new approach of a two-DOF PRBM is proposed to simulate both the tip locus and tip deflection angle of large-deflection links for compliant mechanisms on the basis of the angular deflection approximation technique. A linear regression for the spring stiffness coefficient of the 2R PRBM using the optimization technique is presented. The advantage of the new model is well illustrated through a numerical comparison between the 1R and the 2R PRBM.

Key words： compliant mechanism; pseudo-rigid-body model (PRBM); large-deflection link; angular deflection approximation

Cite this article

Zhonglei FENG, Yueqing YU, Wenjing WANG, . Modeling of large-deflection links for compliant mechanisms[J]. Frontiers of Mechanical Engineering, 2010 , 5(3) : 294 -301 . DOI: 10.1007/s11465-010-0019-8

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