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, brittleor quasi-brittle materials is studied by a new analytical elasto-plastic damagingmodel. The model is developed in the framework of a thermodynamically consistenttheory. The Helmholtz free energy is written to predict the materials’ hardening orsoftening. An isotropic damage is considered and the possible effects of dilatancyare taken into account including non-associative flow rules. The interface laws arepresented both in a rate and a discrete incremental form. The analytical formulationis then implemented into a finite element code and two structural members arestudied to validate the model. The numerical results are compared to experimentaldata available in literature. It is demonstrated that the new model is general and itincludes 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
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications

Cita questo

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AU - Giambanco, Giuseppe

AU - Spada, Antonino

AU - Rizzo, Piervincenzo

PY - 2009

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N2 - The structural behavior at the interface between two surfaces of ductile, brittleor quasi-brittle materials is studied by a new analytical elasto-plastic damagingmodel. The model is developed in the framework of a thermodynamically consistenttheory. The Helmholtz free energy is written to predict the materials’ hardening orsoftening. An isotropic damage is considered and the possible effects of dilatancyare taken into account including non-associative flow rules. The interface laws arepresented both in a rate and a discrete incremental form. The analytical formulationis then implemented into a finite element code and two structural members arestudied to validate the model. The numerical results are compared to experimentaldata available in literature. It is demonstrated that the new model is general and itincludes the continuum damage mechanics and the elastoplasticity as limit cases.

AB - The structural behavior at the interface between two surfaces of ductile, brittleor quasi-brittle materials is studied by a new analytical elasto-plastic damagingmodel. The model is developed in the framework of a thermodynamically consistenttheory. The Helmholtz free energy is written to predict the materials’ hardening orsoftening. An isotropic damage is considered and the possible effects of dilatancyare taken into account including non-associative flow rules. The interface laws arepresented both in a rate and a discrete incremental form. The analytical formulationis then implemented into a finite element code and two structural members arestudied to validate the model. The numerical results are compared to experimentaldata available in literature. It is demonstrated that the new model is general and itincludes the continuum damage mechanics and the elastoplasticity as limit cases.

KW - biphase

KW - coupling

KW - damage

KW - interface

KW - plasticity

UR - http://hdl.handle.net/10447/42005

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VL - 198

SP - 3884

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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