Finite Element Modelling of Elastomeric Bearings
Tomme: LXI (LXV) Fascicle: 2 | 2015
Pages: 19-26
Abstract text:
The paper presents the numerical modelling of elastomeric bearings used in seismic base isolation, with the finite element method in the ANSYS Workbench software. The aim of this paper is to determine the horizontal stiffness of simple elastomeric bearings and elastomeric bearings with holes subjected to the same vertical force and horizontal displacement. The tested elastomeric bearings have 100 ×100 mm plane dimensions and a height of 79 mm. The vertical force applied to the bearings had a value of 1,000 N and the horizontal displacement was 24 mm. The hyperelastic and viscoelastic properties of elastomers were defined using the Ogden model and Prony series. The hysteresis curves of the bearings, using the displacements and reactions resulted from the program, were plotted. The horizontal stiffness of elastomeric bearings with holes was by approximately 50% lower compared to the simple elastomeric bearing.
Key Words:
elastomeric bearings with holes; horizontal stiffness; Ogden model; Prony series.
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