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The Non Linear Behavior of the Microplane Model in COMSOL

pubblicazioni - Presentazione

The Non Linear Behavior of the Microplane Model in COMSOL

Il comportamento non lineare del modello dei Micropiani, basato sulla definizione di superfici di boundary, è stato implementato in COMSOL per simulare il complesso comportamento meccanico di grandi strutture civili in calcestruzzo, quali le dighe.

Numerical models based on the Finite Element Method (FEM) are frequently used to evaluate the safety conditions of large concrete structures. In the last year, the elastic behavior of the Microplane Model was implemented in COMSOL because it is considered a promising approach able to overcome those limits typical of the classical approaches, which can in general simulate only a few specific characteristics of concrete, but not the overall behavior. The basic idea of the Microplane Model is related to the observation that the main mechanical phenomena of concrete take place on planes whose orientation depends on load and material conditions.This paper deals with the review of the linear behavior where some remarks are needed and a description of the implementation process within COMSOL of the non-linear behavior of the Microplane Model, based on the definition of boundary surfaces. In order to verify this part, some tests are presented as well.

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