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Design of a Folded Leaf Spring with high support stiffness at large displacements using the Inverse Finite Element Method

  • J. RommersEmail author
  • J. L. Herder
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)

Abstract

Compliant (flexure) elements provide highly precise motion guiding because they do not suffer from friction or backlash. However, their support stiffness drops dramatically when they are actuated from their home position. In this paper, we show that the existing Inverse Finite Element (IFE) method can be used to efficiently design flexure elements such that they have a high support stiffness in their actuated state. A folded leaf spring element was redesigned using an IFE code written in Matlab™. The design was validated using the commercial Finite Element software package Ansys™, showing the desired high support stiffness in the actuated state. The proposed method could aid in the design of more compact flexure mechanisms with a larger useful range of motion.

Keywords

Compliant mechanisms Flexures Inverse Finite Elements Precision Support stiffness 

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Notes

Acknowledgment

This work is part of the research programme Möbius with project number 14665, which is (partly) financed by the Netherlands Organisation for Scientific Research (NWO).

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Precision and Microsystems EngineeringDelft University of TechnologyDelftThe Netherlands

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