Modelling, simulation and experiment of the spherical flexible joint stiffness
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Published:2018-02-19
Issue:1
Volume:9
Page:81-89
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ISSN:2191-916X
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Container-title:Mechanical Sciences
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language:en
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Short-container-title:Mech. Sci.
Author:
Li SongyuORCID, Wang Liquan, Yao Shaoming, Jia Peng, Yun Feihong, Jin Wenxue, Lv Dong
Abstract
Abstract. The spherical flexible joint is extensively used in engineering. It is designed to provide flexibility in rotation while bearing vertical compression load. The linear rotational stiffness of the flexible joint is formulated. The rotational stiffness of the bonded rubber layer is related to inner radius, thickness and two edge angles. FEM is used to verify the analytical solution and analyze the stiffness. The Mooney–Rivlin, Neo Hooke and Yeoh constitutive models are used in the simulation. The experiment is taken to obtain the material coefficient and validate the analytical and FEM results. The Yeoh model can reflect the deformation trend more accurately, but the error in the nearly linear district is bigger than the Mooney–Rivlin model. The Mooney–Rivlin model can fit the test result very well and the analytical solution can also be used when the rubber deformation in the flexible joint is small. The increase of Poisson's ratio of the rubber layers will enhance the vertical compression stiffness but barely have effect on the rotational stiffness.
Funder
National Natural Science Foundation of China
Publisher
Copernicus GmbH
Subject
Industrial and Manufacturing Engineering,Fluid Flow and Transfer Processes,Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering,Control and Systems Engineering
Reference21 articles.
1. Chalhoub, M. S. and Kelly, J. M.: Effect of bulk compressibility on the stiffness of cylindrical base isolation bearings, Int. J. Solids. Struct., 26, 743–760, 1990. 2. Chalhoub, M. S. and Kelly, J. M.: Analysis of infinite-strip-shaped base isolator with elastomer bulk compression, J. Eng. Mech., 117, 1791–1805, 1991. 3. Chen, G. S. and Yang, Y.: Stiffness design, simulation and test of laminated spherical elastomeric bearing, Hangkong Dongli Xuebao/journal of Aerospace Power, 30, 1512–1519, 2015. 4. Crocker, L. and Duncan, B.: Measurement Methods for Obtaining Volumetric Coefficients for Hyperelastic Modelling of Flexible Adhesives, National Physical Laboratory, Teddington, UK, 2001. 5. Donguy, P.: Development of a helicopter rotor hub elastomeric bearing, J. Aircraft, 17, 346–350, 2015.
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