Journal cover Journal topic
Mechanical Sciences An open-access journal for theoretical and applied mechanics

Journal metrics

  • IF value: 1.211 IF 1.211
  • IF 5-year<br/> value: 1.705 IF 5-year
  • SNIP value: indexed SNIP
  • SJR value: indexed SJR
  • IPP value: indexed IPP
  • h5-index value: 15 h5-index 15
Supported by
Logo Library of Delft University of Technology
Logo NWO
Affiliated to
Logo iftomm
Mech. Sci., 8, 1-9, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
10 Jan 2017
Design and analysis of symmetric and compact 2R1T (in-plane 3-DOC) flexure parallel mechanisms
Guangbo Hao School of Engineering, University College Cork, Cork, Ireland
Abstract. Symmetry is very necessary in flexure mechanisms, which can eliminate parasitic motions, avoid buckling, and minimize thermal and manufacturing sensitivity. This paper proposes two symmetric and compact flexure designs, in-plane 3-DOC (degree of constraint) mechanisms, which are composed of 4 and 6 identical wire beams, respectively. Compared to traditional leaf-beam-based designs, the two present designs have lower stiffness in the primary motion directions, and have smaller stiffness reduction in the parasitic directions. Analytical modelling is conducted to derive the symbolic compliance equations, enabling quick analysis and comparisons of compliances of the two mechanisms. A prototype has been tested statically to compare with analytical models.

Citation: Hao, G.: Design and analysis of symmetric and compact 2R1T (in-plane 3-DOC) flexure parallel mechanisms, Mech. Sci., 8, 1-9,, 2017.
Publications Copernicus