Print Email Facebook Twitter Pseudo rigid body model for a nonlinear folding compliant mechanism Title Pseudo rigid body model for a nonlinear folding compliant mechanism Author Hargrove, Brianne (The Pennsylvania State University) Nastevska, Angela (Kentaur-Impex, Skopje) Frecker, Mary (The Pennsylvania State University) Jovanova, J. (TU Delft Transport Engineering and Logistics) Date 2022 Abstract Folding compliant mechanisms have the potential to be used for innovative designs tailored for specific applications such as energy absorption, shape morphing, or stress relief. This tailorability relies on multiple variables that define the geometric and material behavior. The combined effort of the geometric and material nonlinearity can emphasize certain features in the design that, individually, would not be possible. Folding as a concept is very important in origami engineering and requires careful choice in the design variables when it comes to dimensions and material properties. Finite element analyses for folding at the level of a unit cell, as well as the overall structural design, can be cumbersome and computationally expensive. Therefore, in this work, a segmented pseudo rigid body model that captures a high level of flexibility is developed for both a superelastic material, which is characterized using a shape memory alloy, and a hyperelastic, rubber-like material. By increasing the number of segments, the model allows the structure to undergo large deformations. The results from the segmented model are compared with FEA for the folding compliant mechanism. 3D-printing and experimental testing of the compliant mechanism is also explored. Subject 3D-printingCompliant mechanismsHyperelasticityPseudo rigid body modelShape memory alloysSuperelasticity To reference this document use: http://resolver.tudelft.nl/uuid:2cef89ef-9923-4f76-9eb9-7389dffc402e DOI https://doi.org/10.1016/j.mechmachtheory.2022.105017 Embargo date 2023-01-11 ISSN 0094-114X Source Mechanism and Machine Theory, 176 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Brianne Hargrove, Angela Nastevska, Mary Frecker, J. Jovanova Files PDF 1_s2.0_S0094114X22002658_main.pdf 15.7 MB Close viewer /islandora/object/uuid:2cef89ef-9923-4f76-9eb9-7389dffc402e/datastream/OBJ/view