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| Author(s): |
Rafael Celeghini Santiago
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Escola Politécnica (EP/BC) |
| Defense date: | 2014-04-07 |
| Examining board members: |
Marcílio Alves;
Sérgio Frascino Müller de Almeida;
Dora Dimanova Karagiozova;
Gerson Marinucci;
José Ricardo Tarpani
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| Advisor: | Marcílio Alves; Wesley James Cantwell |
| Abstract | |
In this work, the behaviour of fibre-metal laminates under impact loading is studied by using theoretical, numerical and experimental approaches. The material is a combination of thin aluminium 2024-T3 layers and an innovative high strength thermoplastic polypropylene material. Low and high velocity impact events were performed using a falling weight machine and a gas-gun projectile launcher, respectively. The thermoplastic fibre-metal laminates (or TFML) and its constituents were mechanically characterized in the range of strain rates between 10-4 / s and 102 / s , using commercial universal testing machines and a specifically designed rig for tensile tests at intermediate strain rates. The Jones and Reid-Wen theoretical models were adapted to be used with TFML plates. A finite element model of the TFML under impact events was developed using LS-Dyna software. The numerical model revalled results that were compared with the theoretical models and the experimental data, providing reasonably similar results. Once the TFML impact behaviour was identified and modelled, the effect of the layers distribution and constituent composition on the TFML impact response was studied. Studies of the strain rate effect, identor geometry and the impact location were also performed. Finally, a TFML configuration was suggested in order to improve the TFML impact performance. (AU) | |
| FAPESP's process: | 09/14839-7 - Numerical and experimental study of mechanical impact on fiber metal laminates |
| Grantee: | Rafael Celeghini Santiago |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |