A Contribution to Time-Dependent Damage Modeling of Composite Structures
| Autor: | Dominique Perreux, Frédéric Thiebaud, Yann Poirette, Paul Treasurer |
|---|---|
| Přispěvatelé: | IFP Energies nouvelles (IFPEN), Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Cyclic stress
Materials science Composite number 02 engineering and technology Viscoelasticity Stress (mechanics) 0203 mechanical engineering Damage mechanics medicine [INFO]Computer Science [cs] Composite material Fatigue Modeling Stiffness Epoxy Creep 021001 nanoscience & nanotechnology [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation 020303 mechanical engineering & transports visual_art Ceramics and Composites visual_art.visual_art_medium medicine.symptom 0210 nano-technology |
| Zdroj: | Applied Composite Materials Applied Composite Materials, Springer Verlag (Germany), 2014, 21, pp.677-688. ⟨10.1007/s10443-013-9364-1⟩ |
| ISSN: | 0929-189X 1573-4897 |
| Popis: | International audience; The paper presents a new damage model for predicting stiffness loss due to creep loading and cyclic fatigue. The model, developed within a continuum damage mechanics framework, is based on the idea of a time-dependent damage spectrum, some elements of which occur rapidly and others slowly. The use of this spectrum allows a single damage kinematic to model creep and fatigue damage and to take into account the effect of stress amplitude, R ratio, and frequency. The evolution equations are based on similar equation than the one describing the viscoelasticity model and are relatively easy to implement. The new model is compared to the experimental results on carbon fiber/epoxy tubes. Quasi-static, creep and fatigue tests are performed on filament-wound tubular specimens to characterize the elastic, viscoelastic and plastic behavior of the composite 2 material. Varying amounts of damage are observed and discussed depending on stress level and R ratio. The experimental work aims to develop and validate the damage model for predicting stiffness loss due to creep loading and cyclic fatigue. |
| Databáze: | OpenAIRE |
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