Physically-sound simulation of low-velocity impact on fiber reinforced laminates
| Autor: | S. Sadaba, Claudio S. Lopes, Carlos González, Javier LLorca, Pedro P. Camanho |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Materiales Computer simulation business.industry Matemáticas Mechanical Engineering Subroutine Aerospace Engineering Ocean Engineering 02 engineering and technology Structural engineering Composite laminates 021001 nanoscience & nanotechnology Finite element method 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Indentation Automotive Engineering Polygon mesh 0210 nano-technology Safety Risk Reliability and Quality business Civil and Structural Engineering |
| Zdroj: | International Journal of Impact Engineering, ISSN 0734-743X, 2016-06, Vol. 92 Archivo Digital UPM Universidad Politécnica de Madrid |
| Popis: | A high-fidelity virtual tool for the numerical simulation of low-velocity impact damage in unidirectional composite laminates is proposed. A continuum material model for the simulation of intraply damage phenomena is implemented in a numerical scheme as a user subroutine of the commercially available Abaqus finite element package. Delaminations are simulated using of cohesive surfaces. The use of structured meshes, aligned with fiber directions allows the physically-sound simulation of matrix cracks parallel to fiber directions, and their interaction with the development of delaminations. The implementation of element erosion criteria and the application of intraply and interlaminar friction allow for the simulation of fiber splits and their entanglement, which in turn results in permanent indentation in the impacted laminate. It is shown that this simulation strategy gives sound results for impact energies bellow and above the Barely Visible Impact Damage threshold, up to laminate perforation conditions. |
| Databáze: | OpenAIRE |
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