Sökning: "large displacements"

Visar resultat 1 - 5 av 74 avhandlingar innehållade orden large displacements.

  1. 1. Analysis of Ball CV-joints of Fixed Type

    Författare :Peter Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; frictional forces; displacements; contact angles; load distribution;

    Sammanfattning : Two theoretical models for analysing ball CV-joints of fixed type are presented. The models, which have been implemented in computer programs, calculate internal conditions such as load distribution, contact angles and displacements for different operating conditions. LÄS MER

  3. 2. Corotational formulation for nonlinear analysis of flexible beam structures

    Författare :Thanh Nam Le; Jean-Marc Battini; Jari Mäkinen; KTH; []
    Nyckelord :Corotational method; nonlinear dynamic analysis; beam element; large displacements; finite rotations; time stepping method; cubic interpolations;

    Sammanfattning : Flexible beam structures are popular in civil and mechanical engineering. Many of these structures undergo large displacements and finite rotations, but with small deformations. Their dynamic behaviors are usually investigated using finite beam elements. A well known method to derive such beam elements is the corotational approach. LÄS MER

  4. 3. Nonlinear dynamics of flexible structures using corotational beam elements

    Författare :Thanh-Nam Le; Jean-Marc Battini; Reijo Kouhia; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; corotational method; nonlinear dynamics; large displacements; finite rotations; time stepping method; thin-walled cross-section; beam element;

    Sammanfattning : The purpose of this thesis is to develop corotational beam elements for the nonlinear dynamic analyse of flexible beam structures. Whereas corotational beam elements in statics are well documented, the derivation of a corotational dynamic formulation is still an issue. LÄS MER

  5. 4. Behaviour of Piles with Enlarged Tip in Non-Cohesive Soil. Model Tests and Numerical Simulations

    Författare :Torbjörn Edstam; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; numerical simulations; plasticity; model tests; enlarged tip; piles; large strains; sand;

    Sammanfattning : Slender piles reduce detrimental vibrations during installation. In order to preserve a high bearing capacity, the pile tip can be enlarged after installation. This study consists of model tests of conventional piles (unexpanded piles) and piles with enlarged tip (expanded piles). LÄS MER

  7. 5. Drinking behaviors of large groups : studies disentangling population drinking in Sweden

    Författare :Jonas Raninen; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: The starting point for this thesis was the unexpected development of per capita alcohol consumption and youth drinking in Sweden. There has been an observed decline for both: in the adult population since 2004 and among youth since 2000. Alcohol has at the same time become cheaper and more available. LÄS MER