Sökning: "shear failure"

Visar resultat 16 - 20 av 184 avhandlingar innehållade orden shear failure.

1. 16. Effect of shear cutting on metal fatigue

   Författare :David Gustafsson; Erik Olsson; Jörgen Kajberg; Pär Jonsén; Henrik Sieurin; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Punching; Trimming; Shear cutting; Fatigue; HCF; Residual stresses; Hållfasthetslära; Solid Mechanics;

   Sammanfattning : Lightweighting of automotive and heavy-duty vehicle components is an important task that does not need any further motivation or background. It can be read in a large part of the technical papers in the field. A common approach for finding lighter solutions is to increase the material grade while decreasing the material thickness. LÄS MER

3. 17. Hydromechanical breakdown of crystalline rock : a study based on experiments on hot dry rock geothermal energy

   Författare :Thomas Wallroth; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; failure mechanism; microseismicity; reservoir; fluid pressure; pore pressure; jacking shear failure; hot dry rock; seismic event; shut-in; hydraulic fracturing; stimulation; rock stress; joint;

   Sammanfattning : .... LÄS MER

4. 18. Shear and Torsion Interaction in Prestressed Hollow Core Slabs

   Författare :Helén Broo; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shear-torsion capacity; hollow core unit; shear and torsion interaction; non-linear finite element analyses; hollow core slab; precast prestressed concrete; hollow core floor;

   Sammanfattning : There are many applications in which hollow core units are subjected to combined torsion and shear, for example in floors supported on three edges and in floors with openings. The traditional calculation method for combined shear and torsion in hollow-core units adds stresses from various sources without taking into account deformations and compatibility within the unit or restraint at the boundaries. LÄS MER

5. 19. The modified Iosipescu shear test for orthotropic materials

   Författare :Niklas Melin; Jonas Neumeister; Gradin Per; KTH; []
   Nyckelord :composite; modified Iosipescu tet; shear test; strain field uniformity; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : AbstractThe Iosipescu shear test, also known as asymmetric four point bending of a V-notched beam,is frequently used for measuring in-plane shear properties of composites. The ASTM standard(ASTM D-5379-05) regulates how the test is to be performed. LÄS MER

7. 20. Deformation and failure of rock

   Författare :Kelvis del Carmen Pérez Hidalgo; Håkan Stille; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

   Sammanfattning : In this doctoral thesis work the relationship between the deformation and the initiation of failure around an underground excavation was studied. In this work data from observed failure and measured deformations was used. This work is based on information obtained from laboratory test, underground field cases and numerical analysis. LÄS MER