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Regularización de la energía de fractura utilizando un modelo de fisura distribuida de Hillerborg y daño isotrópico mediante un método sin malla de puntos finitos

Authors: Pérez Pozo, Luis; Valdivia, Fernado; Oller Martínez, Sergio Horacio;

Regularización de la energía de fractura utilizando un modelo de fisura distribuida de Hillerborg y daño isotrópico mediante un método sin malla de puntos finitos

Abstract

El fenómeno de fractura en materiales heterogéneos cuasi-frágiles ha sido estudiado extensivamente con modelación numérica basada en el Método de Elementos Finitos (MEF), mostrando dependencias en la orientación y tamaño de la malla en los resultados. Es por eso que el uso de técnicas sin malla junto con modelos de fisura distribuida surgen como alternativas a estas dependencias. En este trabajo, un modelo de fisura distribuida aplicado al fenómeno de daño isotrópico mediante un método sin malla de Puntos Finitos es presentado. Se propone el uso de una longitud geométrica dada por la dirección de los esfuerzos principales en reemplazo de una longitud característica, la cual se basa en el modelo de Fisura Ficticia de Hillerborg. El criterio de fluencia de Rankine y un esquema iterativo incremental de Newton-Raphson son usados para predecir el comportamiento no-lineal en la zona fracturada del material.

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Spain
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Keywords

Fracture mechanics -- Mathematical models, Fisura distribuida, Métodos sin malla, Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials, Daño isotrópico, :Enginyeria dels materials::Assaig de materials [Àrees temàtiques de la UPC], Mecànica de fractura -- Models matemàtics

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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