Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling
The tensile behaviour of near α Ti3Al2.5 V alloy, conceived for applications in aerospace and automotive engineering, is characterized from quasi-static to high strain rates. The material is found to present noticeable strain rate sensitivity. The dynamic true strain rate in the necking cross-sectio...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2020
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| _version_ | 1797051497389752320 |
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| author | Zhang, L-H Pellegrino, A Petrinic, N |
| author_facet | Zhang, L-H Pellegrino, A Petrinic, N |
| author_sort | Zhang, L-H |
| collection | OXFORD |
| description | The tensile behaviour of near α Ti3Al2.5 V alloy, conceived for applications in aerospace and automotive engineering, is characterized from quasi-static to high strain rates. The material is found to present noticeable strain rate sensitivity. The dynamic true strain rate in the necking cross-section reaches values up to ten times higher than the nominal strain rate. It is also observed that beyond necking the dynamic true stress-strain curves present limited rate dependence. The experimental results at different strain rates are used to determine a suitable constitutive model for finite element simulations of the dynamic tensile tests. The model predicts the experimentally macroscopic force-time response, true stress-strain response and effective strain rate evolution with good agreement. |
| first_indexed | 2024-03-06T18:20:18Z |
| format | Journal article |
| id | oxford-uuid:060dc6b0-a028-4e6e-a615-9d139b519efe |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:20:18Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:060dc6b0-a028-4e6e-a615-9d139b519efe2022-03-26T09:00:33ZDynamic necking of a near α titanium alloy at high strain rates: experiments and modellingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:060dc6b0-a028-4e6e-a615-9d139b519efeEnglishSymplectic ElementsElsevier2020Zhang, L-HPellegrino, APetrinic, NThe tensile behaviour of near α Ti3Al2.5 V alloy, conceived for applications in aerospace and automotive engineering, is characterized from quasi-static to high strain rates. The material is found to present noticeable strain rate sensitivity. The dynamic true strain rate in the necking cross-section reaches values up to ten times higher than the nominal strain rate. It is also observed that beyond necking the dynamic true stress-strain curves present limited rate dependence. The experimental results at different strain rates are used to determine a suitable constitutive model for finite element simulations of the dynamic tensile tests. The model predicts the experimentally macroscopic force-time response, true stress-strain response and effective strain rate evolution with good agreement. |
| spellingShingle | Zhang, L-H Pellegrino, A Petrinic, N Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling |
| title | Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling |
| title_full | Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling |
| title_fullStr | Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling |
| title_full_unstemmed | Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling |
| title_short | Dynamic necking of a near α titanium alloy at high strain rates: experiments and modelling |
| title_sort | dynamic necking of a near α titanium alloy at high strain rates experiments and modelling |
| work_keys_str_mv | AT zhanglh dynamicneckingofanearatitaniumalloyathighstrainratesexperimentsandmodelling AT pellegrinoa dynamicneckingofanearatitaniumalloyathighstrainratesexperimentsandmodelling AT petrinicn dynamicneckingofanearatitaniumalloyathighstrainratesexperimentsandmodelling |