Articles | Volume 9, issue 1
Research article
19 Feb 2018
Research article |  | 19 Feb 2018

Modelling, simulation and experiment of the spherical flexible joint stiffness

Songyu Li, Liquan Wang, Shaoming Yao, Peng Jia, Feihong Yun, Wenxue Jin, and Dong Lv

Related subject area

Subject: Solid Mechanics | Techniques and Approaches: Mathematical Modeling and Analysis
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Cited articles

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.
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.
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.
Crocker, L. and Duncan, B.: Measurement Methods for Obtaining Volumetric Coefficients for Hyperelastic Modelling of Flexible Adhesives, National Physical Laboratory, Teddington, UK, 2001.
Donguy, P.: Development of a helicopter rotor hub elastomeric bearing, J. Aircraft, 17, 346–350, 2015.
Short summary
The spherical flexible joint is used to connect the Tension Leg Platform to the seabed. It can provide low shear stiffness while bearing high compression force. So the research on the stiffness of flexible joint is necessary. The linear rotational stiffness of the flexible joint is formulated and FEM is used to verify the analytical solution. The increase of Poisson's ratio of the rubber layers will enhance the vertical compression stiffness but barely have effect on the rotational stiffness.