Sökning: "co-rotational"

Hittade 5 avhandlingar innehållade ordet co-rotational.

  1. 1. Co-rotational beam elements in instability problems

    Författare :Jean-Marc Battini; KTH; []
    Nyckelord :instability; co-rotational mehtod; branch-switching; beam element; warping; plastic buckling. post-bifurcation; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The purpose of the work presented in this thesis is to implement co-rotational beam elements and branch-switching procedures in order to analyse elastic and elastoplasticinstability problems. For the 2D beam elements, the co-rotational framework is taken from Crisfield [23]. LÄS MER

  3. 2. Co-rotational shell element for elasto-plastic, quasi-static problems

    Författare :Aleksandar Filipovski; KTH; []
    Nyckelord :elasto-plasticity; shell element; co-rotational;

    Sammanfattning : .... LÄS MER

  4. 3. Plastic instability analysis of plane frames using a co-rotational approach

    Författare :Jean-Marc Battini; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Plastic instability; Co-rotational method; Branch-switching; Beam element; Plastic buckling; Post-bifurcation; Building engineering; Byggnadsteknik;

    Sammanfattning : .... LÄS MER

  5. 4. Energy-momentum conserving time-stepping algorithms for nonlinear dynamics of planar and spatial Euler-Bernoulli/Timoshenko beams

    Författare :Sophy Chhang; Jean-Marc Battini; Mohammed Hjiaj; Reijo Kouhia; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nonlinear Dynamics; Energy-momentum conserving scheme; 2D co-rotational beam; Geometrically exact 3D Euler-Bernoulli beam; impact; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : Large deformations of flexible beams can be described using either the co-rotational approach or the total Lagrangian formalism. The co-rotational method is an attractive approach to derive highly nonlinear beam elements because it combines accuracy with numerical efficiency. LÄS MER

  7. 5. Simplified mechanical models for the nonlinear dynamic analysis of elasto-plastic steel structures impacted by a rigid body

    Författare :Piseth Heng; Jean-Marc Battini; Mohammed Hjiaj; Bassam Izzuddin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : Buildings subjected to impact and explosion are usually studied using large scale and highly nonlinear finite element model which are time-consuming. The first part of the thesis deals with the development of simple and accurate models for evaluating the nonlinear inelastic behaviour of steel frame structures subjected to impact. LÄS MER