Prediction of the first modal frequency of compliant mechanisms using the pseudo-rigid-body model

The pseudo-rigid-body modeling technique is used to simplify the nonlinear analysis of compliant mechanisms. This paper presents the first work that investigates the possibility of using the pseudo-rigid-body model to predict the first modal response of compliant mechanisms. Four different configura...

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Bibliographic Details
Published in:Journal of mechanical design (1990) 1999-06, Vol.121 (2), p.309-313
Main Authors: LYON, S. M, ERICKSON, P. A, EVANS, M. S, HOWELL, L. L
Format: Article
Language:English
Subjects:
Applied sciences
Drives
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Linkage mechanisms, cams
Mathematical models
Mechanical engineering. Machine design
Modal analysis
Physics
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
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Summary:The pseudo-rigid-body modeling technique is used to simplify the nonlinear analysis of compliant mechanisms. This paper presents the first work that investigates the possibility of using the pseudo-rigid-body model to predict the first modal response of compliant mechanisms. Four different configurations of the parallel-guiding mechanism are modeled and tested, as well as two configurations of compliant straight-line mechanisms. The model predictions of the first natural frequencies were compared with experimental results for all six mechanism configurations. The model predictions are within 9 percent of the experimental results for all cases.
ISSN:1050-0472
1528-9001
DOI:10.1115/1.2829459