Fatigue impact of residual stresses from manufacturing processes

Visa enkel post
dc.contributor.authorTegnemyr, Klas
dc.contributor.departmentChalmers tekniska högskola / Institutionen för mekanik och maritima vetenskapersv
dc.contributor.examinerEkberg, Anders
dc.contributor.supervisorBengtsson, Kajsa
dc.contributor.supervisorDavidsson, Torkel
dc.date.accessioned2022-06-23T13:48:51Z
dc.date.available2022-06-23T13:48:51Z
dc.date.issued2022sv
dc.date.submitted2020
dc.description.abstractThis study was done to investigate how residual stress from different manufacturing processes could be simulated and what effect they would have on predicted fatigue life of the components. The two manufacturing processes investigated were forming and welding. The forming process was simulated through a two-simulation process, an explicit forming simulation and an implicit springback simulation were used to evaluate the residual stress formation. There were results from the forming simulation that need further investigations to ensure trustworthy results. The welding process featured a simplified simulation divided into two parts, a heat transfer simulation and an implicit static simulation. Results from the forming simulation gave similar stress levels as the measured values. The welding simulation did not give as good results as the forming simulation. A different method should be investigated to get more accurate results. Residual stresses impact on the predicted fatigue life was examined by comparing a component safety factor to fatigue with and without residual stress added to the simulation. The result showed that the safety factor decreased moderately when accounting for the residual stresses due to the elevated mean stress. This master thesis was done on behalf of Azelio in collaboration with Uniso Technologies. Azelio develops a thermal energy storage called TES.POD that uses stored thermal energy to provide energy through a Stirling engine. The system has a storage capacity of 13 hours that could work as an off-grid solar system storage.sv
dc.identifier.coursecodeMMSX30sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/304893
dc.language.isoengsv
dc.relation.ispartofseries2022:44sv
dc.setspec.uppsokTechnology
dc.subjectresidual stresssv
dc.subjectsimulationsv
dc.subjectformingsv
dc.subjectweldingsv
dc.subjectfatiguesv
dc.titleFatigue impact of residual stresses from manufacturing processessv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
local.programmeApplied mechanics (MPAME), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
Chalmers_University_of_Technology_Master_Thesis_2020_44_Klas_Tegnemyr.pdf
Storlek:
6.71 MB
Format:
Adobe Portable Document Format
Beskrivning:
Ladda ner
License bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
license.txt
Storlek:
1.51 KB
Format:
Item-specific license agreed upon to submission
Beskrivning:
Ladda ner
Samling
Examensarbeten för masterexamen