Sökning: "Byggnadsmekanik"

Visar resultat 11 - 15 av 59 avhandlingar innehållade ordet Byggnadsmekanik.

  1. 11. Mechanics of Paperboard Packages : Performance at Short Term Static Loading

    Författare :Liliana Beldie; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Paper 1Several problems emerge when a paperboard package is modeled by means of the nite element method. One of the issues that one has to deal with is the constitutive model of the paperboard. Paperboard and paper in general areorthotropic materials, which means that constitutive parameters in three orthogonal directions must be determined. LÄS MER

  3. 12. Constitutive Modelling and Finite Element Analysis of Concrete Structures with Regard to Environmental Influence

    Författare :Ola Dahlblom; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite Elemente Method; Constitutive model; Concrete; Environment; Moisture; Drying; Temperature; Fracture; Fictitious crack model; Smeared Crack; Creep; Shrinkage; Pickett Effect;

    Sammanfattning : A constitutive model for concrete is formulated. Tensile fracture is described using a smeared crack approach where the fracrure energy is considered and the shear stiffneess in the cracked region is gradually reduced as crackling develops. LÄS MER

  4. 13. Finite Element Analysis of Structures with Nonlinear Material Behaviour

    Författare :Ola Dahlblom; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  5. 14. Perpendicular to grain fracture analysis of wooden structural elements - Models and applications

    Författare :Henrik Danielsson; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fracture mechanics; cohesive zone modeling; Weibull theory; wood; glulam; orthotropy; heterogeneity; hole; dowel; asymmetric loading;

    Sammanfattning : This thesis concerns experimental and theoretical work regarding perpendicular to grain fracture in wooden structural elements. The experimental part concerns strength tests of glulam beams with a hole. LÄS MER

  7. 15. The strength of glulam beams with holes - A probabilistic fracture mechanics method and experimental tests

    Författare :Henrik Danielsson; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fracture mechanics; Weibull; design; test; strength; stress; glulam; hole; probabilistic fracture mechanics.;

    Sammanfattning : This thesis deals with experimental tests and methods for strength analysis of glulam beams with holes. Test results and methods for strength analysis available in literature are compiled and discussed. The methods considered comprise both code strength design methods and more general methods for strength analysis. LÄS MER