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Article
A Damage Law for Dynamic Failure in Brittle Solids with Penny-Shaped Microcracks
A damage model for dynamic tensile failure of nominally brittle solids is constructed using a two-scale approach. The asymptotic homogenization method is applied to microstructures with penny-shaped microcrack...
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Article
Dynamic Damage Law with Fragmentation Length: Strain-Rate Sensitivity of the Tensile Response
A damage law for dynamic failure in brittle solids is proposed in the present note. The new evolution equation is obtained by incorporating the Grady–Glenn–Chudnovsky average fragment size expression as the mi...
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Chapter and Conference Paper
Simulation of Loading Rate Effects on Dynamic Brittle Failure of Concrete Structures Using a Two-Scale Damage Model
In this contribution, we use a dynamic damage model to simulate the failure of concrete structures at different loading rates. The damage model is fully deduced from the energy criterion describing the dynamic...
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Article
Antiplane two-scale model for dynamic failure
A new dynamic damage law is proposed for the anti-plane loading case. The model is deduced from the energy criterion describing the dynamic propagation of microcracks by using the mathematical homogenization m...
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Article
A two-scale poromechanical model for cohesive rocks
This paper presents a computational homogenization approach in the framework of poromechanics. A fully coupled hydromechanics problem is formulated at the macroscopic scale. The constitutive equations are repl...
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Article
Simultaneous dual-wavelength operation at 1.06 and 1.34 μm in Nd-vanadate laser crystals
Output performances of Nd-vanadate lasers with simultaneous dual-wavelength emission on the 1.06-μm 4 F 3/2 → 4 I 11/2 transition and the 4 ...
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Article
On a 3D micromechanical damage model
In the present contribution a 3D two-scale damage model is obtained by asymptotic-developments homogenization, assuming a locally periodic micro-crack distribution. At the microscopic level an energy-based pro...
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Chapter and Conference Paper
Preface
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Chapter and Conference Paper
A multiscale approach to damage configurational forces
A two-scale homogenization method is used to construct a damage model in the framework of configurational mechanics. The upscaling procedure allows for the identification of damage configurational forces as th...
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Article
Preface
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Article
A multiscale approach to damage configurational forces
A two-scale homogenization method is used to construct a damage model in the framework of configurational mechanics. The upscaling procedure allows for the identification of damage configurational forces as th...
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Article
Material forces in microfractured bodies
In the present work, we study the overall behavior of a microfractured elastic body within the configurational mechanics framework. Micro and macro scales are considered and scale changes are carried out by as...
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Chapter
Micro-Fracture Instabilities in Granular Solids
We study the appearance of instable behaviors (like strain localization bands) in elastic solids, as a consequence of micro-fracture. A two-scale approach of computational homogenization is considered. The mac...
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Chapter and Conference Paper
Microfracture and Strain Localization: A Computational Homogenization Approach
The aim of this work is to study the appearance instable behaviours (like strain localisation bands) in elastic solids, as a consequence of micro-fracture. A two-scale approach of computational homogenization ...
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Chapter and Conference Paper
Asymptotic Homogenisation for Heterogeneous Media with Evolving Microcracks
In this work, an asymptotic expansion homogenization is used to study the overall behaviour of a damaged elastic body with a locally periodic distribution of growing microcracks. The microstructure evolution i...
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Article
An intermediate crack model for flaws in piezoelectric solids
The aim of this paper is to study a crack model for piezoelectric bodies. In recent years it became evident that the electrically impermeable or the perfect electric contact boundary conditions on the crack fa...
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Article
The thermoelastic material-momentum equation
The equation of material momentum, or pseudomomentum, is obtained for thermoelastic materials. This is done in the classic theory, based on the heat conduction hypothesis, and also in the framework of a thermo...
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Article
On the energy of electroelastic fracture
Two energy approaches to electroelastic fracture yielding path-independent integrals already proposed in the literature are analysed in this paper. A particular problem concerning the propagation of an electri...
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Chapter
Weak Solutions in Rate Type Dynamic Viscoplasticity
An initial and boundary value problem, describing dynamic processes for a class of viscoplastic materials, is considered. An existence and uniqueness result is obtained. The assumptions are weak enough to allo...
