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Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys / JONATHAN GORDON

Swansea University Author: JONATHAN GORDON

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DOI (Published version): 10.23889/SUthesis.60440

Abstract

The demand for lightweight and strong alloys in the aviation industry, such as titanium 6Al-4V, has grown with the increase in air travel. The fan blades on aero engines which are usually made from titanium 6Al-4V are susceptible to high strain rate deformation due to bird strike or other events ass...

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Published: Swansea 2018
Institution: Swansea University
Degree level: Doctoral
Degree name: EngD
Supervisor: de souza Neto, Eduardo ; Sienz, Johann
URI: https://cronfa.swan.ac.uk/Record/cronfa60440
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first_indexed 2022-07-11T10:37:57Z
last_indexed 2023-01-13T19:20:34Z
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spelling 2022-07-11T12:00:14.9818321 v2 60440 2022-07-11 Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys ebb64f52f178b0628075931351b2344d JONATHAN GORDON JONATHAN GORDON true false 2022-07-11 The demand for lightweight and strong alloys in the aviation industry, such as titanium 6Al-4V, has grown with the increase in air travel. The fan blades on aero engines which are usually made from titanium 6Al-4V are susceptible to high strain rate deformation due to bird strike or other events associated with engine failure. The desire to optimise titanium alloys has lead to the desire for greater understanding of titanium deformation mechanics. In this research a hyperelastic-viscoplastic single-crystal rate-dependent material model is proposed. This model allows for the slip families of crystals to have their own unique material properties assigned to them. The crystallographic orientation is governed through the use of Euler angles. These Euler angles define the initial slip system configuration within the crystal. A method for generating computational microstructures known as representative volume elements for titanium 6Al-4V is detailed. The generated microstructures are compared to EBSD data and the correct volume fraction of beta phase is obtained. The average alpha grain size is also well matched but the beta grains are larger than found in the EBSD data set. The constructed microstructure is then meshed with brick elements and the model is used to simulate its response to macro and micro scale loadings. The model captures the general trends but does not give an exact match to the experimental data. E-Thesis Swansea Crystal plasticity, Titanium microstructure, Finite Element 10 9 2018 2018-09-10 10.23889/SUthesis.60440 COLLEGE NANME COLLEGE CODE Swansea University de souza Neto, Eduardo ; Sienz, Johann Doctoral EngD EPSRC doctoral training grant (EP/I015507/1); Timet UK Ltd. 2022-07-11T12:00:14.9818321 2022-07-11T11:25:24.5921563 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised JONATHAN GORDON 1 60440__24529__af951b50e6e1450995c14a7dfa0ce949.pdf Gordon_Jonathan_EngD_Thesis_Final_Cronfa.pdf 2022-07-11T11:48:54.5838094 Output 3021091 application/pdf E-Thesis – open access true Copyright: The author, Jonathan Gordon, 2018. true eng
title Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
spellingShingle Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
JONATHAN GORDON
title_short Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
title_full Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
title_fullStr Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
title_full_unstemmed Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
title_sort Investigating the Use of Crystal Plasticity Finite Element (CPFE) Modeling to Determine Ballistic Performance of Novel Titanium Alloys
author_id_str_mv ebb64f52f178b0628075931351b2344d
author_id_fullname_str_mv ebb64f52f178b0628075931351b2344d_***_JONATHAN GORDON
author JONATHAN GORDON
author2 JONATHAN GORDON
format E-Thesis
publishDate 2018
institution Swansea University
doi_str_mv 10.23889/SUthesis.60440
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description The demand for lightweight and strong alloys in the aviation industry, such as titanium 6Al-4V, has grown with the increase in air travel. The fan blades on aero engines which are usually made from titanium 6Al-4V are susceptible to high strain rate deformation due to bird strike or other events associated with engine failure. The desire to optimise titanium alloys has lead to the desire for greater understanding of titanium deformation mechanics. In this research a hyperelastic-viscoplastic single-crystal rate-dependent material model is proposed. This model allows for the slip families of crystals to have their own unique material properties assigned to them. The crystallographic orientation is governed through the use of Euler angles. These Euler angles define the initial slip system configuration within the crystal. A method for generating computational microstructures known as representative volume elements for titanium 6Al-4V is detailed. The generated microstructures are compared to EBSD data and the correct volume fraction of beta phase is obtained. The average alpha grain size is also well matched but the beta grains are larger than found in the EBSD data set. The constructed microstructure is then meshed with brick elements and the model is used to simulate its response to macro and micro scale loadings. The model captures the general trends but does not give an exact match to the experimental data.
published_date 2018-09-10T04:18:33Z
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score 11.036706

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