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- W109309670 abstract "In this study a link between local material models and structural analysis is outlined. An ”ad hoc” element formulation is used in order to connect complex material models to the finite element framework used for structural analysis. An improved elasto-plastic line spring finite element formulation, used in order to take cracks into account, is linked to shell elements which are further linked to beam elements. In this way one obtain a global model of the shell structure that also accounts for local flexibilities and fractures due to defects. An important advantage with such an approach is a direct fracture mechanics assessment e.g. via computed J - integral or CTOD. A recent development in this approach is the notion of two-parameter fracture assessment. This means that the crack tip stress tri-axiality (constraint) is employed in determining the corresponding fracture toughness, giving a much more realistic capacity of cracked structures. The present thesis is organized in six research articles and an introductory chapter that reviews important background literature related to this work." @default.
- W109309670 created "2016-06-24" @default.
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- W109309670 date "2001-01-01" @default.
- W109309670 modified "2023-10-15" @default.
- W109309670 title "Iintegrated local/global analysis and fracture assessment og pipelines with defects" @default.
- W109309670 hasPublicationYear "2001" @default.
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