Sökning: "Phase field fracture approach"

Hittade 2 uppsatser innehållade orden Phase field fracture approach.

1. 1. The Investigation of Crack Propagation in Cortical Bone using a Phase Field Fracture Approach

   Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

   Författare :Olivia Karlsson; [2022]
   Nyckelord :Cortical Bone; Cortical bone microstructure; Phase field; Phase field fracture approach; Crack propagation; Technology and Engineering;

   Sammanfattning : Human cortical bone tissue is a complex and strong composite material, with the ability to resist damage via slowing, stopping or redirecting propagating cracks. However, the ability is impaired with age. At the microscale, changes are seen both in terms of increased porosity and as changes in local material parameters. LÄS MER

3. 2. An Attempt Towards FE-Modelling of Fracture Propagation in Railway Wheels

   Master-uppsats, KTH/Spårfordon

   Författare :Fred Öhnander; [2018]
   Nyckelord :Railway wheel; Wheel-rail contact; Wear; Fracture initiation; Physical fracture propagation model; FE-model; Fracture mechanics; XFEM; Inclusion; Järnvägshjul; Hjul-räl-kontakt; Slitage; Sprickinitiering; Fysisk sprickbildningsmodell; FE-modell; Frakturmekanik; XFEM; Imperfektion;

   Sammanfattning : The demand for higher velocities and heavier axle loads for freight trains leads to higher forces on the railway wheels which in turn lead to an increase in stresses on and below the surface of the wheel-rail contact. By time, this induces wear on the wheels which consequently lead to higher maintenance costs and in some cases accidents. LÄS MER