The Pseudo-Rigid-Body Model for Dynamic Predictions of Macro and Micro Compliant Mechanisms

This work discusses the dynamic predictions of compliant mechanisms using the Pseudo-Rigid-Body model (PRBM). In order to improve the number of mechanisms that can be modeled, this research develops and identifies several key concepts in the behavior of beam segments where both ends are fixed to a rigid body (fixed-fixed flexible segments). A model is presented, and several examples are discussed. The dynamic behavior of several compliant segments is predicted using the PRBM and the results are compared to finite element analysis and experimental results. Details are presented as to the transient behavior of a typical uniform rectangular cross section beam. The results of this study are extended and applied to compliant planar mechanisms. It is shown by comparison with finite element analysis and experimental results that the PRBM is a good model of the physical system's dynamic behavior. The method is also demonstrated for use with compliant microelectromechanical (MEMS) systems.

Name thesis:degree_name

PhD

Grantor dc:publisher

Brigham Young University - Provo

Author dc:creator

• Lyon, Scott Marvin

• compliant mechanisms
• MEMS
• dynamics
• dynamic predictions
• dynamic behavior
• beam segment behavior
• planar mechanisms
• microelectromechanical systems
• Pseudo-Rigid-Body model
• PRBM
• Mechanical Engineering

Language dc:language

English

Repository record dc:identifier

https://scholarsarchive.byu.edu/etd/82

OAI identifier oai:identifier

oai:scholarsarchive.byu.edu:etd-1081