Open AccessGeneralized mechanics of flexure hinges for unified simulations
Author(s) -
Siqiang Xu,
Pinkuan Liu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/612/3/032140
Subject(s) - hinge , backlash , structural engineering , stiffness , stiffness matrix , shearing (physics) , quadrature (astronomy) , finite element method , equations of motion , beam (structure) , mathematics , engineering , physics , classical mechanics , mechanical engineering , geotechnical engineering , electrical engineering
Flexure hinges are widely introduced into precision mechanisms to perform the smooth motion without backlash and friction. In this paper, a generalized beam element based on the weak form quadrature element method is proposed to assess the compliances of the flexure hinges with different profiles. The flexure hinge is regarded as the Timoshenko beam taking the shearing effect into account. The elemental stiffness matrix is obtained with solution of algebraic equations and the explicit mesh structure is not required for compliance modelling of the flexure hinge with an arbitrary profile. The compliances of two typical types of flexure hinges are computed based on the proposed element. The results are compared with ones yielded by analytical equations. Then the high accuracy and effectiveness of the proposed element are validated.