Phase-field modelling of fatigue crack propagation

Visa enkel post
dc.contributor.authorDegwekar, Sharvil
dc.contributor.authorPurantagi, Ankeet Mohan
dc.contributor.authorTzanetou, Afroditi
dc.contributor.authorZetterlund, Gustav
dc.contributor.authorÅkesson, Louise
dc.contributor.departmentChalmers tekniska högskola // Institutionen för mekanik och maritima vetenskapersv
dc.contributor.departmentChalmers University of Technology / Department of Mechanics and Maritime Sciencesen
dc.contributor.examinerJohansson, Håkan
dc.contributor.supervisorLarsson, Fredrik
dc.contributor.supervisorBharali, Ritukesh
dc.contributor.supervisorNezhad., Mohammad Salahi
dc.date.accessioned2023-07-24T09:43:44Z
dc.date.available2023-07-24T09:43:44Z
dc.date.issued2023
dc.date.submitted2023
dc.description.abstractFracture prediction and modeling are crucial in studying the behavior of materials under stress. This research focuses on utilizing the phase field method for accurate fracture prediction, which offers distinct advantages over traditional methods by representing fractures implicitly as smooth fields. The phase field method was implemented and analyzed using Matlab and COMSOL as tools, aiming to investigate and gain insights into the ease and feasibility of phase-field modelling for fatigue fracture problems. This was conducted mainly by introducing a fatigue degradation function, with the purpose of simulating the degrading process of the material after repeated cyclic loading. Through comprehensive analysis, quantities of interest such as the history variable, accumulated strain energy, and damage variable were examined. The obtained trends and results were found to align with existing literature, although neither calibration nor validation was conducted due to time limitations. Suggestions for future work include implementing a force-controlled load, calibration of the fatigue degradation function for a larger amount of load cycles, and validation with experimental data. Nevertheless, the results obtained from the fatigue implementation can provide a solid foundation for continued research. In conclusion, the progress during the project highlighted the potential of the phase-field model to predict fatigue fracture by modelling the crack through a damage field. Hence, fatigue prediction using phase-field modelling has the potential to make significant progress and thus contribute to less computationally expensive simulations for more complex fatigue fracture problems.
dc.identifier.coursecodeTME131
dc.identifier.urihttp://hdl.handle.net/20.500.12380/306719
dc.language.isoeng
dc.subjectphase field, fatigue, cyclic loading, fatigue degradation function
dc.titlePhase-field modelling of fatigue crack propagation
dc.type.degreeProjektarbete, avancerad nivåsv
dc.type.degreeProject Report, advanced levelen
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
Phase_field_modeling_of_fatigue_crack_propagation-1-35.pdf
Storlek:
1.83 MB
Format:
Adobe Portable Document Format
Beskrivning:
Ladda ner
License bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
license.txt
Storlek:
2.35 KB
Format:
Item-specific license agreed upon to submission
Beskrivning:
Ladda ner
Samling
Projektarbeten