dc.contributor.advisor | Berto, Filippo | |
dc.contributor.author | Viespoli, Luigi Mario | |
dc.date.accessioned | 2019-09-11T09:10:06Z | |
dc.date.created | 2017-07-27 | |
dc.date.issued | 2017 | |
dc.identifier | ntnudaim:17944 | |
dc.identifier.uri | http://hdl.handle.net/11250/2615288 | |
dc.description.abstract | 1) An overview on the fatigue assessment procedures for welds 3
1.1) Basic principles 3
1.2) Determining the stresses and the stress intensity factors 5
1.2.1) Nominal Stress approach 6
1.2.2) Structural Hot Spot Stress approach 8
1.2.2.1) Thickness correction 14
1.2.2.2) Structural Hot Spot Stress measuring from strain 16
1.2.3) Effective Notch Stress approach 17
2) The Notch Stress Intensity Factors 18
2.1) Scale Effect 20
2.2) N-SIFs computation through FEA analysis obtained stress field 21
2.3) Stress distribution in blunt notches 22
3) The Strain Energy Density 23
3.1) The energetic approach applied to the assessment of a component 28
3.2) Size Effect 30
3.3) Finite Elements Method in the computation of the Strain Energy Density 31
4) Averaged Stress Energy Density, refined and coarse mesh comparison 32
5) Fatigue life assessment for a welded joint with different criteria. 39
5.1) Nominal Stress approach 41
5.2) Structural Hot-Spot Stress approach 42
5.2.1) Linear Extrapolation with Fine Mesh of Linear Elements 43
5.2.2) Quadratic Extrapolation with Fine Mesh of Linear Elements 45
5.2.3) Linear Extrapolation with Coarse Mesh of Quadratic Elements 46
5.3) Averaged SED approach 47
6) A non-dimensional parameter for rapid NSIF computation 50 | en |
dc.language | eng | |
dc.publisher | NTNU | |
dc.subject | Produktutvikling og produksjon, Produktutvikling og materialer | en |
dc.title | Fatigue Life Prediction of Welded Joints for Industrial Applications - Overview on the regulations and extension to Fracture Mechanics | en |
dc.type | Master thesis | en |
dc.source.pagenumber | 52 | |
dc.contributor.department | Norges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap,Institutt for maskinteknikk og produksjon | nb_NO |
dc.date.embargoenddate | 10000-01-01 | |