Damage and Plasticity at the interfaces in composite materials and structures

Giuseppe Giambanco, Antonino Spada, Piervincenzo Rizzo

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37 Citazioni (Scopus)

Abstract

The structural behavior at the interface between two surfaces of ductile, brittle or quasi-brittle materials is studied by a new analytical elasto-plastic damaging model. The model is developed in the framework of a thermodynamically consistent theory. The Helmholtz free energy is written to predict the materials’ hardening or softening. An isotropic damage is considered and the possible effects of dilatancy are taken into account including non-associative flow rules. The interface laws are presented both in a rate and a discrete incremental form. The analytical formulation is then implemented into a finite element code and two structural members are studied to validate the model. The numerical results are compared to experimental data available in literature. It is demonstrated that the new model is general and it includes the continuum damage mechanics and the elastoplasticity as limit cases.
Lingua originaleEnglish
pagine (da-a)3884-3901
Numero di pagine18
RivistaComputer Methods in Applied Mechanics and Engineering
Volume198
Stato di pubblicazionePublished - 2009

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composite structures
Composite structures
plastic properties
Plasticity
damage
composite materials
Composite materials
elastoplasticity
hardening (materials)
structural members
Elastoplasticity
Continuum damage mechanics
brittle materials
Structural members
Brittleness
Free energy
Hardening
plastics
free energy
Plastics

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Computer Science Applications
  • Physics and Astronomy(all)
  • Mechanical Engineering
  • Mechanics of Materials

Cita questo

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AU - Giambanco, Giuseppe

AU - Spada, Antonino

AU - Rizzo, Piervincenzo

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N2 - The structural behavior at the interface between two surfaces of ductile, brittle or quasi-brittle materials is studied by a new analytical elasto-plastic damaging model. The model is developed in the framework of a thermodynamically consistent theory. The Helmholtz free energy is written to predict the materials’ hardening or softening. An isotropic damage is considered and the possible effects of dilatancy are taken into account including non-associative flow rules. The interface laws are presented both in a rate and a discrete incremental form. The analytical formulation is then implemented into a finite element code and two structural members are studied to validate the model. The numerical results are compared to experimental data available in literature. It is demonstrated that the new model is general and it includes the continuum damage mechanics and the elastoplasticity as limit cases.

AB - The structural behavior at the interface between two surfaces of ductile, brittle or quasi-brittle materials is studied by a new analytical elasto-plastic damaging model. The model is developed in the framework of a thermodynamically consistent theory. The Helmholtz free energy is written to predict the materials’ hardening or softening. An isotropic damage is considered and the possible effects of dilatancy are taken into account including non-associative flow rules. The interface laws are presented both in a rate and a discrete incremental form. The analytical formulation is then implemented into a finite element code and two structural members are studied to validate the model. The numerical results are compared to experimental data available in literature. It is demonstrated that the new model is general and it includes the continuum damage mechanics and the elastoplasticity as limit cases.

KW - interface, damage, plasticity, coupling, biphase

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EP - 3901

JO - Computer Methods in Applied Mechanics and Engineering

JF - Computer Methods in Applied Mechanics and Engineering

SN - 0374-2830

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