Determination of fracture mechanics behavior of polyethylene sheets
2017 (Engelska)Självständigt arbete på avancerad nivå (magisterexamen), 40 poäng / 60 hp
Studentuppsats (Examensarbete)
Abstract [en]
Polyethylene is a widely-used material in package industries. The fracture behavior of this material has not been studied in the plastic region in many years. In this thesis work, the J-Integral which is one material property used to represent the plastic material strength is calculated through the numerical analysis. To build a correct numerical model, the material behavior is summarized from previous uniaxial tensile test. The result from the fracture experiment for variable initial crack length is used to validate the reliability of the numerical model. The numerical analysis is done by the software ABAQUS which has the function to get the value of J-Integral directly. The final result contains the comparison between experiments and numerical analysis and the value of J-Integral at the crack initiation.
Ort, förlag, år, upplaga, sidor
2017. , s. 55
Nyckelord [en]
Material behavior, Fracture mechanics, Elastic plastic fracture mechanics, J-Integral, Numerical analysis, ABAQUS
Nationell ämneskategori
Textil-, gummi- och polymermaterial Maskinteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-65706OAI: oai:DiVA.org:lnu-65706DiVA, id: diva2:1113311
Ämne / kurs
Maskinteknik
Utbildningsprogram
Maskinteknik, magisterprogram, 60 hp
Handledare
Examinatorer
2017-06-282017-06-212017-06-28Bibliografiskt granskad