A non-prismatic beam element for the optimization of flexure mechanisms

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Abstract

Flexure joints are rapidly gaining ground in precision engineering because of their predictable behavior. However the range of motion of flexure joints is limited due to loss of support stiffness in deformed configurations. Most of the common flexure joints consist of prismatic leaf springs. This paper presents a simple non-prismatic beam formulation that can be used for the efficient modelling of non-prismatic leaf springs. The resulting stiffness and stress computed by the non-prismatic beam element are compared to the results of a finite element analysis. The paper shows that the support stiffness of two typical flexure joints can be increased up to a factor of 1.9 by using non-prismatic instead of prismatic leaf springs.
Original languageEnglish
Title of host publication16th International Conference on Multibody Systems, Nonlinear Dynamics, and Control (MSNDC)
PublisherASME Digital Collection
Number of pages10
ISBN (Electronic)9780791883914
DOIs
Publication statusPublished - 14 Oct 2020
EventASME International Design Engineering Technical Conferences & Computer and Information in Engineering, ASME IDETC CIE 2020 - Virtual Conference, Online, United States
Duration: 17 Aug 202019 Aug 2020
Conference number: 40th
https://event.asme.org/IDETC-CIE-2020
https://event.asme.org/IDETC-CIE

Conference

ConferenceASME International Design Engineering Technical Conferences & Computer and Information in Engineering, ASME IDETC CIE 2020
Abbreviated titleASME IDETC CIE 2020
CountryUnited States
CityOnline
Period17/08/2019/08/20
Internet address

Keywords

  • Computational mechanics
  • Compliant mechanisms
  • Design optimization

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