Elastic element showing low stiffness loss at large deflection

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Compliant mechanisms like a parallel guidance and a cross pivot flexure contain leaf-springs. The basic elastic elements like leaf-springs and wire flexures constrain Degrees-Of-Freedom (DOFs) when flat or straight respectively. However, when deflected these elastic elements lose stiffness rapidly. Therefore, mechanisms containing leaf-springs and wire flexures are suitable for small deflections only. This paper presents an elastic element, a so-called ‘curved hinge flexure’, which shows only a limited stiffness decrease at large rotational deflections of the initially 3 stiff directions. When comparing a curved hinge flexure with a single leaf-spring with comparable rotational compliance over a ± 15 degrees stroke, the stiffness in the stiff directions is 2.5 to 14 times higher.
Original languageUndefined
Title of host publicationProceedings of the 24th ASPE Annual Meeting [cd-rom]
Place of PublicationMonterey, California, USA
PublisherAmerican Society for Precision Engineering
Number of pages4
ISBN (Print)9781887706513
Publication statusPublished - 4 Oct 2009
Event24th ASPE Annual Meeting 2009 - Monterey, United States
Duration: 4 Oct 20099 Oct 2009
Conference number: 24

Publication series



Conference24th ASPE Annual Meeting 2009
Country/TerritoryUnited States
Internet address


  • IR-89567
  • METIS-257959

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