Descripción
|
|
---|---|
The French CEA, together with EDF and the IAEA, recently organised an international benchmark to evaluate the ability to model the mechanical behaviour of a typical nuclear reinforced concrete structure subjected to seismic demands. The participants were provided with descriptions of the structure and the testing campaign; they had to propose the numerical model and the material laws for the concrete (stage #1). A mesh of beam and shell elements was generated; for modelling the concrete a damaged plasticity model was used, but a smeared crack model was also investigated. Some of the initial experimental results, with the mock-up remaining in the elastic range, were provided to the participants for calibrating their models (stage #2). Predictions had to be produced in terms of eigen-frequencies and motion time histories. The calculated frequencies reproduced reasonably the experimental ones; the time histories, calculated by modal response analysis, also reproduced adequately the observed amplifications. The participants were then expected to predict the structural response under strong ground motions (stage #3), which increased progressively up to a history recorded during the 1994 Northridge earthquake, followed by an aftershock. These results were produced using an explicit solver and a damaged plasticity model for the concrete, although an implicit solver with a smeared crack model was also investigated. The paper presents the conclusions of the pre-test exercise, as well as some observations from additional simulations conducted after the experimental results were made available. | |
Internacional
|
Si |
Nombre congreso
|
SIMULIA Community Conference, Berlín, Alemania |
Tipo de participación
|
960 |
Lugar del congreso
|
Berlín |
Revisores
|
Si |
ISBN o ISSN
|
CDP08UPM |
DOI
|
|
Fecha inicio congreso
|
19/05/2015 |
Fecha fin congreso
|
21/05/2015 |
Desde la página
|
1 |
Hasta la página
|
15 |
Título de las actas
|
SIMULIA Community Conference, Berlín, Alemania |