Sökning: "Finite strains"

Visar resultat 6 - 10 av 71 avhandlingar innehållade orden Finite strains.

  1. 6. Modeling of plasticity at large strains

    Författare :Mathias Wallin; Lunds universitet.; Lund University.; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis is concerned with various aspects of the constitutive modeling of plasticity. Both theoretical issues and issues related to the numerical implementation of the constitutive models are addressed. LÄS MER

  2. 7. Modeling of evolving anisotropy at finite elasto-plastic strain

    Detta är en avhandling från Div. of Solid Mechanics, Lund University

    Författare :Magnus Harrysson; Lunds universitet.; Lund University.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Simulation tools are used to a wide extent in the product development process today, both to obtain better products and to reduce the development time required. Anisotropic materials are utilized in many engineering applications. LÄS MER

  3. 8. Evolution of Anisotropy in Continua Exposed to Large Strains

    Detta är en avhandling från Div. of Solid Mechanics, Lund University

    Författare :Magnus Harrysson; Lunds universitet.; Lund University.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis deals with the modeling of anisotropic materials at finite deformations. The major emphasis is the development of constitutive models able to account for the evolving directionally dependent properties of these materials. In addition, the numerical implementation of the models developed is addressed. LÄS MER

  4. 9. Aspects on finite element simulation of sheet metal forming processes

    Detta är en avhandling från Linköping : Institutionen för konstruktions- och produktionsteknik. Linköpings universitet

    Författare :Ramin Moshfegh; Linköpings universitet.; Linköpings universitet.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sheet metal forming process; Forming Limit Diagram; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering Metallurgical manufacturing engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik Metallurgisk produktionsteknik;

    Sammanfattning : This thesis has focused on four different aspects of finite element simulation of sheet metal forming processes. Four substantial research areas are the development of a methodology for predicting the limiting strains in connection with the Forming Limit Diagram, the applicable mode of procedure for finite element simulation of the hydromechanical deep drawing process, the adaptive mesh refinement strategy based on gradients of the effective plastic stresses and strains; and the reliability and sensitivity assessments within sheet metal forming processes. LÄS MER

  5. 10. An adaptive finite element method for the compressible Euler equations

    Detta är en avhandling från Stockholm : KTH

    Författare :Murtazo Nazarov; KTH.; [2009]
    Nyckelord :;

    Sammanfattning : This work develops a stabilized finite element method for the compressible Euler equations and proves an a posteriori error estimate for the approximated solution. The equations are approximated by the cG(1)cG(1) finite element method with continuous piecewise linear functions in space and time. LÄS MER