Mechanical and thermo-mechanical response of a lead-core bearing device subjected to different loading conditions

Rannsóknarafurð: Framlag til fræðitímaritsRáðstefnugreinritrýni

Útdráttur

The contribution is focused on the numerical modelling, simulation and analysis of a lead-core bearing device for passive seismic isolation. An accurate finite element model of a lead-core bearing device is presented. The model is designed to analyse both mechanical and thermo-mechanical responses of the seismic isolator to different loading conditions. Specifically, the mechanical behaviour in a typical identification test is simulated. The response of the lead-core bearing device to circular sinusoidal paths is analysed. The obtained shear displacement - shear force relationship is compared to experimental data found in literature sources. The hypothesis that heating of the lead-core during cyclic loading affects the degrading phenomena in the bearing device is taken into account. Constitutive laws are defined for each material: lead, rubber and steel. Both predefined constitutive laws (in the used general-purpose finite element code) and semi-analytical procedures aimed at a more accurate modelling of the constitutive relations are tested. The results obtained by finite element analysis are to be further used to calibrate a macroscopic model of the lead-core bearing device seen as a single-degree-of-freedom mechanical system.

Upprunalegt tungumálEnska
Númer greinar16011
FræðitímaritMATEC Web of Conferences
Bindi165
DOI
ÚtgáfustaðaÚtgefið - 25 maí 2018
Viðburður12th International Fatigue Congress, FATIGUE 2018 - Poitiers Futuroscope, Frakkland
Tímalengd: 27 maí 20181 jún. 2018

Athugasemd

Publisher Copyright:
© The Authors, published by EDP Sciences, 2018.

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