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http://hdl.handle.net/11375/8966
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DC Field | Value | Language |
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dc.contributor.advisor | Wu, Peidong | en_US |
dc.contributor.author | Chen, Xiaoxian | en_US |
dc.date.accessioned | 2014-06-18T16:44:52Z | - |
dc.date.available | 2014-06-18T16:44:52Z | - |
dc.date.created | 2011-05-19 | en_US |
dc.date.issued | 2009 | en_US |
dc.identifier.other | opendissertations/4130 | en_US |
dc.identifier.other | 5149 | en_US |
dc.identifier.other | 2020814 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/8966 | - |
dc.description.abstract | <p>In this study, detailed numerical works are carried out to investigate cladding<br />and superimposed hydrostatic pressure on fracture in metals under tension by using<br />finite element software ABAQUS/Explicit. It is concluded that both cladding and<br />superimposed hydrostatic pressure delay void nucleation and void growth, which<br />results in increasing fracture strain in metals under tension.<br />The influence of cladding on delaying fracture in metals under tension is<br />numerically studied by employing Gurson-Tvergaard-Needleman (GTN) damage<br />model. It is found that cladding has a significant effect on enhancement in materials'<br />ductility due to the fact that cladding increases necking strain which in tum delays the<br />void nucleation and growth. Topological arrangement of cladding in axisymmetric<br />tensile round bars shows no noticeable effect on necking but significantly affects<br />fracture strain.<br />The influence of superimposed hydrostatic pressure is numerically<br />investigated on sheet metals under plane strain tension by using GTN damage model.<br />It is found that superimposed hydrostatic pressure has no noticeable effect on necking<br />but significantly delays fracture initiation due to the fact that superimposed<br />hydrostatic pressure delays or completely eliminates the nucleation, growth and<br />coalescence of microvoids or microcracks.</p> | en_US |
dc.subject | Mechanical Engineering | en_US |
dc.subject | Mechanical Engineering | en_US |
dc.title | Numerical simulation of effects of cladding and superimposed hydrostatic pressure on fracture in metals under tension. | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Mechanical Engineering | en_US |
dc.description.degree | Master of Applied Science (MASc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Size | Format | |
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fulltext.pdf | 4.13 MB | Adobe PDF | View/Open |
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