A fast numerical procedure for the simulation of inter-laminar damage growth in stiffened composite panels
| Autor: | G. Di Felice, Aniello Riccio, A. Raimondo, Andrea Sellitto, M. Damiano |
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| Přispěvatelé: | Riccio, Aniello, Damiano, M., Raimondo, A., Di Felice, G., Sellitto, A. |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Strain energy release rate
Engineering Field (physics) business.industry Composite number Delamination Laminar flow 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Finite element method Wing-box 020303 mechanical engineering & transports Distribution (mathematics) 0203 mechanical engineering Debonding Damage mechanics Ceramics and Composites 0210 nano-technology business Damage mechanic Civil and Structural Engineering |
| Popis: | A novel numerical methodology is used to investigate the behavior of an all-composite wing-box under a compressive load taking into account the presence of concurrent inter-laminar damages such as delaminations and skin-stringer debonds and their propagation. The proposed numerical methodology, based on linear structural analyses, is computationally inexpensive if compared to the VCCT and CZM based numerical techniques, hence, it appears to be particularly suitable for the preliminary design phase of complex structure. The presented linear approach is an evolution of a previous technique developed specifically for delaminations. Indeed, in this paper the linear approach has been enhanced to predict the propagation of inter-laminar damages with open crack surfaces such as skin-stringer debonds and it has been implemented in a commercial Finite Element platform. The effectiveness (in terms of computational cost and accuracy of results) of the suggested linear numerical methodology, in predicting the compressive behavior of complex composite structures with inter-laminar damages, has been confirmed by cross-comparisons with the standard non-linear VCCT technique. Finally, comparisons in terms of critical propagation load and Energy Release Rate distribution along the damage tip predictions, for several examined structural configurations with different damage extension and depth, have allowed to assess the field of applicability of the propose novel numerical methodology. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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