Ítem
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Maimí Vert, Pere
Camanho, Pedro Manuel Ponces Rodrigues de Castro Mayugo Majó, Joan Andreu Dávila, Carlos G. |
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| 2006 | |
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A continuum damage model for the prediction of damage onset and structural collapse of structures manufactured in fiber-reinforced plastic laminates is proposed. The principal damage mechanisms occurring in the longitudinal and transverse directions of a ply are represented by a damage tensor that is fixed in space. Crack closure under load reversal effects are taken into account using damage variables established as a function of the sign of the components of the stress tensor. Damage activation functions based on the LaRC04 failure criteria are used to predict the different damage mechanisms occurring at the ply level. The constitutive damage model is implemented in a finite element code. The objectivity of the numerical model is assured by regularizing the dissipated energy at a material point using Bazant’s Crack Band Model. To verify the accuracy of the approach, analyses of
coupon specimens were performed, and the numerical predictions were compared with experimental data NASA/TM-2006-214282 |
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| application/pdf | |
| http://hdl.handle.net/10256/7898 | |
| eng | |
| National Aeronautics and Space Administration | |
| Articles publicats (D-EMCI) | |
| © NASA TM Technical Reports, 2006, núm. 214282 | |
| Tots els drets reservats | |
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Mecànica de fractura
Fracture mechanics Materials compostos -- Fatiga Composite materials -- Fatigue Assaigs de materials Materials -- Testing |
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| A Thermodynamically Consistent Damage Model for Advanced Composites | |
| info:eu-repo/semantics/article | |
| DUGiDocs |
