Search for dissertations about: "non-linear finite element analyses"

Showing result 26 - 30 of 39 swedish dissertations containing the words non-linear finite element analyses.

2. 26. Dynamic Behaviour of Reinforced Concrete Structures: Analyses with a Strong Discontinuity Approach

   Author : Per-Ola Svahn; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ; reinforcement; concrete; cohesive crack; anisotropic damage; X-FEM;

   Abstract : Reinforced concrete is a widely used construction material. To obtain efficient design of new structures and to verify the real mechanical behaviour of existing ones, it is necessary to improve the understanding of advanced structural analyses of reinforced concrete structures. READ MORE

4. 27. Restraint Effects in Concrete Bridges : A Study of Cracking due to Thermal Actions and Shrinkage in Portal Frame Bridges

   Author : Erik Gottsäter; Avdelningen för Konstruktionsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tvång; Betong; Uppsprickning; Temperaturlast; Plattrambro; FE-analys; Restraint; Concrete; Cracking; Thermal action; Portal frame bridge; FE-analysis;

   Abstract : Thermal actions and shrinkage cause volume changes in concrete structures. In structures which are restrained from movements, the restraint effects can cause cracking. However, when cracking occurs, the structure can deform to some extent, which reduces the restraint stresses and thus also the crack widths. READ MORE

5. 28. Dynamic Behaviour of Concrete Structures subjected to Blast and Fragment Impacts

   Author : Joosef Leppänen; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : For protective structures, reinforced concrete is commonly used. Concrete structures subjected to explosive loading in a combination of blast and fragments will have very different response than statically loaded structure. READ MORE

6. 29. Simulating Dynamical Behaviour of Wind Power Structures

   Author : Anders Ahlström; KTH; []
   Keywords : aeroelastic modelling; rotor aerodynamics; structural dynamics; wind turbine; aerforce; sosis-w; solvia;

   Abstract : The workin this thesis deals with the development of anaeroelastic simulation tool for horizontal axis wind turbineapplications.Horizontal axiswind turbines can experience significanttime varying aerodynamic loads, potentially causing adverseeffects on structures, mechanical components, and powerproduction. READ MORE

7. 30. Macroscale Modelling of 3D-Woven Composites: Inelasticity, Progressive Damage and Final Failure

   Author : Carolyn Oddy; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D-woven composites; Anisotropy; Damage; Inelasticity; Phase-field; Failure;

   Abstract : Composites with 3D-woven reinforcement have been slowly making their way into different industrial applications. The interlacement of yarns, not only in-plane but also through-thickness, means that in many applications 3D-woven composites can outperform their laminated counterparts. READ MORE