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Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans. / Ragba Mohamed Abdussalam

Swansea University Author: Ragba Mohamed Abdussalam

Abstract

Thin-walled cylinders are used extensively in the food packaging and cosmetics industries. The cost of material is a major contributor to the overall cost and so improvements in design and manufacturing processes are always being sought. Shape optimisation provides one method for such improvements....

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Published: 2006
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42323
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first_indexed 2018-08-02T18:54:26Z
last_indexed 2018-08-03T10:09:50Z
id cronfa42323
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spelling 2018-08-02T16:24:28.8385982 v2 42323 2018-08-02 Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans. 2831ac2cb815e2d51f266874ce29f04e NULL Ragba Mohamed Abdussalam Ragba Mohamed Abdussalam true true 2018-08-02 Thin-walled cylinders are used extensively in the food packaging and cosmetics industries. The cost of material is a major contributor to the overall cost and so improvements in design and manufacturing processes are always being sought. Shape optimisation provides one method for such improvements. Aluminium aerosol cans are a particular form of thin-walled cylinder with a complex shape consisting of truncated cone top, parallel cylindrical section and inverted dome base. They are manufactured in one piece by a reverse-extrusion process, which produces a vessel with a variable thickness from 0.31 mm in the cylinder up to 1.31 mm in the base for a 53 mm diameter can. During manufacture, packaging and charging, they are subjected to pressure, axial and radial loads and design calculations are generally outside the British and American pressure vessel codes. 'Design-by-test' appears to be the favoured approach. However, a more rigorous approach is needed in order to optimise the designs. Finite element analysis (FEA) is a powerful tool for predicting stress, strain and displacement behaviour of components and structures. FEA is also used extensively to model manufacturing processes. In this study, elastic and elastic-plastic FEA has been used to develop a thorough understanding of the mechanisms of yielding, 'dome reversal' (an inherent safety feature, where the base suffers elastic-plastic buckling at a pressure below the burst pressure) and collapse due to internal pressure loading and how these are affected by geometry. It has also been used to study the buckling behaviour under compressive axial loading. Furthermore, numerical simulations of the extrusion process (in order to investigate the effects of tool geometry, friction coefficient and boundary conditions) have been undertaken. Experimental verification of the buckling and collapse behaviours has also been carried out and there is reasonable agreement between the experimental data and the numerical predictions. E-Thesis Materials science.;Industrial engineering.;Packaging. 31 12 2006 2006-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-02T16:24:28.8385982 2018-08-02T16:24:28.8385982 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Ragba Mohamed Abdussalam NULL 1 0042323-02082018162445.pdf 10798031.pdf 2018-08-02T16:24:45.4070000 Output 32740516 application/pdf E-Thesis true 2018-08-02T16:24:45.4070000 false
title Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
spellingShingle Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
Ragba Mohamed Abdussalam
title_short Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
title_full Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
title_fullStr Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
title_full_unstemmed Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
title_sort Finite element analysis of the design and manufacture of thin-walled pressure vessels used as aerosol cans.
author_id_str_mv 2831ac2cb815e2d51f266874ce29f04e
author_id_fullname_str_mv 2831ac2cb815e2d51f266874ce29f04e_***_Ragba Mohamed Abdussalam
author Ragba Mohamed Abdussalam
author2 Ragba Mohamed Abdussalam
format E-Thesis
publishDate 2006
institution Swansea University
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 Thin-walled cylinders are used extensively in the food packaging and cosmetics industries. The cost of material is a major contributor to the overall cost and so improvements in design and manufacturing processes are always being sought. Shape optimisation provides one method for such improvements. Aluminium aerosol cans are a particular form of thin-walled cylinder with a complex shape consisting of truncated cone top, parallel cylindrical section and inverted dome base. They are manufactured in one piece by a reverse-extrusion process, which produces a vessel with a variable thickness from 0.31 mm in the cylinder up to 1.31 mm in the base for a 53 mm diameter can. During manufacture, packaging and charging, they are subjected to pressure, axial and radial loads and design calculations are generally outside the British and American pressure vessel codes. 'Design-by-test' appears to be the favoured approach. However, a more rigorous approach is needed in order to optimise the designs. Finite element analysis (FEA) is a powerful tool for predicting stress, strain and displacement behaviour of components and structures. FEA is also used extensively to model manufacturing processes. In this study, elastic and elastic-plastic FEA has been used to develop a thorough understanding of the mechanisms of yielding, 'dome reversal' (an inherent safety feature, where the base suffers elastic-plastic buckling at a pressure below the burst pressure) and collapse due to internal pressure loading and how these are affected by geometry. It has also been used to study the buckling behaviour under compressive axial loading. Furthermore, numerical simulations of the extrusion process (in order to investigate the effects of tool geometry, friction coefficient and boundary conditions) have been undertaken. Experimental verification of the buckling and collapse behaviours has also been carried out and there is reasonable agreement between the experimental data and the numerical predictions.
published_date 2006-12-31T03:52:44Z
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score 11.014402

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