Sökning: "deformation gradient"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden deformation gradient.

1. 1. Analysis of hot workability in 316L steel using ductile fracture criterions

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Viktor Strid; [2022]
   Nyckelord :Ductile fracture criterion; Finite Element Method; Hot working; 316L Stainless Steel; Fracture Modeling; Gleeble; Hot deformation;

   Sammanfattning : The focus of this thesis is to develop a simulation model for predicting ductile fractures during hot working at Alleima. The main fracture mechanism in these conditions is ductile fracture by void coalescence. The ductile fractures are caused by the linking of voids that appear when there is large plastic deformation near second-phase particles. LÄS MER

3. 2. Wood and moisture-induced strains in a large deformation setting in 3D

   Master-uppsats, Linnéuniversitetet/Institutionen för byggteknik (BY)

   Författare :Fredrik Ström; Anwar Obeido; [2022]
   Nyckelord :Total Lagrangian; Finite element method; Large deformation theory; Deformation gradient decomposition; Moisture-induced strains; Hygroscopic; Orthotropic.;

   Sammanfattning : Many studies have previously been done on moisture-induced strains in wood. An in- finitesimal/engineering strain model has been used for most of these studies, which is often an accurate approximation for small rotations. However, if large deformations oc- cur, then fictive strains are obtained resulting from the simplified engineering strain. LÄS MER

4. 3. MIGRATION OF FLUID DURING DEFORMATION OF MOLTEN DEUTRATED ICE USING 3D IMAGE ANALYSIS

   Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

   Författare :Uzochukwu Damian Akwuba; [2021-09-14]
   Nyckelord :Ice; Deformation; Tomography; Fluid Migration; Fractures;

   Sammanfattning : The behaviour of in ltrating and intergranular uid in an ice body is essential in understanding the de ection of the glacier body. The movement of the uid during deformation is most naturally controlled by compressive stress and temperature gradient which is important in understanding the behaviour of the glacier body. LÄS MER

5. 4. Per-actor Based Optimization for Semantic-preserving Facial Rig Generation Using Sample Data

   Master-uppsats, Linköpings universitet/Medie- och Informationsteknik; Linköpings universitet/Tekniska fakulteten

   Författare :Josefine Klintberg; [2021]
   Nyckelord :blendshape optimization; facial rigging; deformation transfer; performance capture;

   Sammanfattning : With high emphasis on the need of combining recent research and technology regarding automatic facial rig generation with the artistic aspect and the usage of digital humans within film production pipelines, this thesis project presents a scalable blendshape optimization framework that is adapted to fit within a VFX-pipeline, provides stability for various kinds of usage and makes the workflow of creating facial rigs more efficient. The framework successfully generates per-actor based facial rigs adapted towards sample data while ensuring that the semantics of the input rig are kept in the process. LÄS MER

7. 5. Wing Shape Variation In A Damselfly: Effects Of Range Margins And Latitude

   Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

   Författare :Desirée Kristensson; [2021]
   Nyckelord :damselfly; evolution; distribution; sexual selection; range margins; Lestes sponsa; geometric morphometric;

   Sammanfattning : An optimal wing shape is necessary for the survival of winged insects since it enables different survival strategies and is expected to vary between environments due to different selection pressures. However, few studies have explored wing shape variation across the whole range of a species. LÄS MER