A new pseudo-rigid-body model approach for modeling the quasi-static response of planar flexure-hinge mechanisms. (June 2018)

• Record Type: Journal Article
• Authors: Šalinić, Slaviša; Nikolić, Aleksandar
• Is Part Of: Mechanism and machine theory. Volume 124(2018)
• Page Start: 150
• Page End: 161
• Publication Date: 2018-06
• Subjects: Flexure hinge -- Compliant mechanism -- Pseudo-rigid-body model -- Serial -- Parallel -- Micro-motion stages; Machine theory -- Periodicals; Machinery -- Periodicals; Machines -- Périodiques; Génie mécanique -- Périodiques; Machine theory; Machinery; Periodicals; 621.81
• DOI: 10.1016/j.mechmachtheory.2018.02.011
• Languages: English
• ISSNs: 0094-114X

Abstract

Highlights: A new 3-DOF PRBM of the flexure hinge in plane small deformation is proposed. A new PRBM approach for the quasi-static response analysis of planar compliant mechanisms is shown. Planar serial and parallel compliant mechanisms are considered. The application of the approach is demonstrated on RRR and 3-RRR compliant micro-motion stages. Graphical abstract: Abstract: In this paper a new pseudo-rigid-body model (PRBM) of flexure hinges used in planar flexure-hinge mechanisms with small deformations is presented. Unlike the 1-DOF freedom PRBM used in the existing literature, the PRBM proposed has 3-DOF (degrees of freedom). Using the 3-DOF PRBM of flexure hinges, planar flexure-hinge mechanisms can be represented as rigid multibody systems whose adjacent rigid bodies are connected by 3-DOF joints. After applying this modeling procedure, the principle of virtual work yields a matrix relation for the determination of the quasi-static responses of a flexure mechanism due to external loads. The validity and accuracy of the approach for quasi-static analysis of planar flexure-hinge mechanisms based on the 3-DOF PRBM are examined using the examples of two types of compliant mechanisms: RRR and 3-RRR compliant micro-motion stages.