Numerical/experimental evaluation of buckling behaviour and residual tensile strength of composite aerospace structures after low velocity impact
| Autor: | Enrico Cestino, Francesco Danzi, Giulio Romeo, Paolo Piana |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Composite number Aerospace Engineering 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Residual Composite structure Low-velocity impact Residual strength Finite element method Characterization (materials science) 020303 mechanical engineering & transports 0203 mechanical engineering Buckling Ultimate tensile strength 0210 nano-technology business Tensile testing |
| Zdroj: | Aerospace Science and Technology. 54:1-9 |
| ISSN: | 1270-9638 |
| DOI: | 10.1016/j.ast.2016.04.001 |
| Popis: | A procedure for the characterization of low velocity impact damage and its effect on residual tensile and buckling behaviour of composite structures is presented. A simplified analytical method is used to enhance the damage simulation and a degradation model is introduced in the subsequent finite element analysis. Different degradation coefficients are defined for three impact energy stages. Two different types of analysis are performed using MD.Nastran software: the non-linear progressive failure analysis to estimate the residual tensile strength and the linear analysis to predict the critical uniaxial and shear buckling loads after impact. Tensile and buckling experiments are used to validate the present methodology. A good correlation is obtained for all the cases under investigation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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