Evaluation of Equivalent Spring Stiffness for Use in a Pseudo-Rigid-Body Model of Large-Deflection Compliant Mechanisms

L. L. Howell, A. Midha, T. W. Norton

doi:10.1115/1.2826843

Evaluation of Equivalent Spring Stiffness for Use in a Pseudo-Rigid-Body Model of Large-Deflection Compliant Mechanisms

DOI PDF 被引用文献2件

L. L. Howell

Mechanical Engineering Department, Brigham Young University, Provo, UT 84602-4138
A. Midha

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
T. W. Norton

Eastman Chemical Company, Kingsport, TN 37662

書誌事項

公開日: 1996-03-01

DOI

10.1115/1.2826843

公開者: ASME International

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説明

<jats:p>Compliant mechanisms gain some or all of their mobility from the flexibility of their members rather than from rigid-body joints only. More efficient and usable analysis and design techniques are needed before the advantages of compliant mechanisms can be fully utilized. In an earlier work, a pseudo-rigid-body model concept, corresponding to an end-loaded geometrically nonlinear, large-deflection beam, was developed to help fulfill this need. In this paper, the pseudo-rigid-body equivalent spring stiffness is investigated and new modeling equations are proposed. The result is a simplified method of modeling the force/deflection relationships of large-deflection members in compliant mechanisms. The resulting models are valuable in the visualization of the motion of large-deflection systems, as well as the quick and efficient evaluation and optimization of compliant mechanism designs.</jats:p>