Sökning: "Isogeometric Analysis"

Hittade 4 uppsatser innehållade orden Isogeometric Analysis.

  1. 1. Isogeometric analysis as a tool for large deformation shape optimization

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Författare :Max Kurki; [2021]
    Nyckelord :IGA; NURBS; Shape optimization; Large deformations; Topology optimization; Technology and Engineering;

    Sammanfattning : The framework for isogeometric analysis (IGA) is presented, especially the construction and use of non-uniform rational B-splines (NURBS) to represent geometry, and a method utilizing IGA for structural optimization both for linear elastic and non-linear elastic deformations is implemented. Topology optimization of a linear elastic cantilever is performed, showing that IGA is inecient for topology optimization. LÄS MER

  3. 2. A Matrix-less Method for Approximating the Eigenvectors of Toeplitz-like Matrices

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :David Meadon; [2021]
    Nyckelord :;

    Sammanfattning : Matrix-less methods (MLM) have successfully been used to efficiently approximate the eigenvalues of certain classes of structured matrices. Specifically, the method has been used to approximate the eigenvalues of Toeplitz and Toeplitz-like matrices. LÄS MER

  4. 3. Implementation and validation of an isogeometric hierarchic shell formulation

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Michael Loibl; [2019]
    Nyckelord :Isogeometric Analysis; Shell; Locking; Kirchho-Love; Reissner-Mindlin; Three-Dimensional Shell I;

    Sammanfattning : Within this thesis, thin walled shell structures are discussed with modern element formulationsin the context of the Isogeometric Analysis (IGA). IGA was designed to achieve a directinterface from CAD to analysis. According to the concept of IGA, Non-Uniform RationalB-Splines (NURBS) are used as shape functions in the design and the analysis. LÄS MER

  5. 4. Numerical Methods for the PDES on Curves and Surfaces

    Master-uppsats, Institutionen för datavetenskap

    Författare :Dimitrios Kamilis; [2013]
    Nyckelord :;

    Sammanfattning : Curves and surfaces are manifolds that can be represented using implicit and parametric methods. With a representation in hand, one can define a partial differential equation on the manifold using differential tangential calculus. LÄS MER