Sökning: "FE-calculations"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet FE-calculations.

1. 1. A Damage-Based Interface Model: Application to the Degradation and Failure of a Polycrystalline Microstructure

   Författare :Patrik Cannmo; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; damage; polycrystalline microstructure; degradation; slip and dilatation; interfaces; FE-calculations; viscoplasticity; plasticity; failure;

   Sammanfattning : A constitutive model for material interfaces is presented. The model is based on damage coupled to plastic (or viscoplastic) slip and dilatation, and it is able to describe the successive degradation and failure of an interface. LÄS MER

3. 2. Damage-based interface model: application to the degradation and failure of a polycrystalline microstructure

   Författare :Patrik Cannmo; Jönköping University; []
   Nyckelord :;

   Sammanfattning : A constitutive model is introduced for material interfaces. The model is based on damage coupled to plastic slip and dilatation, and can describe the successive degradation and failure of an interface. LÄS MER

4. 3. Material parameters and defects in anisotropic plates determined by hologram interferometry

   Författare :Karl-Evert Fällström; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

   Sammanfattning : Material parameters and defects in composite plates are determined in a non-contacting and nondestructive way by use of optical methods. Material parameters are determined from TV-holography images, and defects are detected by holographic interferometry with a double pulsed laser as the light source. LÄS MER

5. 4. A NEW APPROACH TO CRACK CONTROL FOR REINFORCED CONCRETE - An investigation of crack widhts close to the reinforcement and the correlation to service life

   Författare :Kristian Tammo; Avdelningen för Konstruktionsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; concrete cover; corrosion; Crack width; steel stress and service life;

   Sammanfattning : One of the most important factors governing durability of concrete structures is reinforcement corrosion, and to prevent degradation associated with it, it is desirable to use large concrete covers. However, if the concrete cover is increased, the majority of design methods will predict that the crack widths at the concrete surface increase significantly. LÄS MER

7. 5. Behaviour and resistance of composite slabs : experiments and finite element analysis

   Författare :Milan Veljkovic; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel Structures; Stålbyggnad;

   Sammanfattning : Composite slab flooring systems are used in steel framed buildings as well as in conjunction with concrete, prestressed concrete and timber structures. Composite slabs consist of a thin-walled profiled steel sheet, reinforcement and in-situ cast concrete. LÄS MER