Assessment of heat generation in sliding pendulum isolators
| Author(s): |
Virginio Quaglini
Marilisa Vitali Riccardo Motta Daniela Ferroni Paolo Dubini |
|---|---|
| Medium: | conference paper |
| Language(s): | English |
| Conference: | 35th Annual Symposium of IABSE / 52nd Annual Symposium of IASS / 6th International Conference on Space Structures: Taller, Longer, Lighter - Meeting growing demand with limited resources, London, United Kingdom, September 2011 |
| Published in: | IABSE-IASS 2011 London Symposium Report |
| Year: | 2011 |
| Abstract: |
Issues related to heat generation in sliding pendulum isolators used as seismic dampers are approached by developing a method for studying the heat state of seismic isolation units in computer analyses. A finite element model of pendulum isolator is created and the generation of frictional heat is reproduced by introducing a heat source located between the moving surfaces, with specific power calculated upon friction coefficient, contact pressure and velocity; the influence of the current surface temperature on the coefficient of friction is also accounted for by means of a custom iterative subroutine. The model provides as the output the temperature field within the isolator over the whole duration of the seismic excitation. Experiments carried out on real scale isolators confirm the reliability of model predictions. The procedure can be a useful design tool for carrying out computational investigations within a wide range of loading and material parameters. |
| Keywords: |
experiments sliding pendulum isolator computational study thermal analysis heat generation
|
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data sheet - Reference-ID
10065547 - Published on:
03/10/2011 - Last updated on:
05/07/2021
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