Sökning: "finite element"

Visar resultat 1 - 5 av 1040 avhandlingar innehållade orden finite element.

  1. 1. On failure modelling in finite element analysis material imperfections and element erosion

    Detta är en avhandling från Institutionen för konstruktions- och produktionsteknik

    Författare :Mattias Unosson; Linköpings universitet.; Linköpings universitet.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element method; element erosion; material failure; material imperfections; crack-tip; TECHNOLOGY Engineering mechanics Solid mechanics; TEKNIKVETENSKAP Teknisk mekanik Fastkroppsmekanik;

    Sammanfattning : This dissertation concerns failure modelling with material imperfections and element erosion in finite element analyses. The aim has been to improve the element erosion technique, which is simple to use and implement and also computationally inexpensive. LÄS MER

  2. 2. Adaptive Finite Element Procedures in Structural Dynamics

    Detta är en avhandling från Chalmers University of Technology

    Författare :Xiangdong Li; Chalmers tekniska högskola.; Chalmers University of Technology.; [1996]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Teknisk mekanik; Engineering mechanics; structural dynamics; finite element; error estimation; a posteriori; h-adaptivity; postprocessing; superconvergent patch recovery; Newmark method; automatic time-stepping; semidiscretization; space-time; discontinuous Galerkin;

    Sammanfattning : This thesis deals with a posteriori error estimation and adaptivity in finite element procedures for the analysis of structural dynamic problems. First, error estimation and adaptivity for the Newmark time integration method are studied. LÄS MER

  3. 3. Numerical and computer techniques in finite element analysis

    Detta är en avhandling från Chalmers University of Technology

    Författare :Hans Wennerström; Chalmers tekniska högskola.; Chalmers University of Technology.; [1981]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Finite element; computer program; numerical integration; Poisson s equation; Navier s equations; Navier-Stokes equations; metal stretching;

    Sammanfattning : .... LÄS MER

  4. 4. Waveguide Finite Elements Applied on a Car Tyre

    Detta är en avhandling från Stockholm : Farkost och flyg

    Författare :Carl-Magnus Nilsson; KTH.; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wave equation; wave solution; waveguide; finite element; spectral finite element; tyre noise; tyre vibration; input power; shells; pre stress; fluid shell coupling; axi--symmetric;

    Sammanfattning : Structures acting as waveguides are quite common withexamples being, construction beams, fluid filled pipes, railsand extruded aluminium profiles. Curved structures like cartyres and pipe-bends may also be considered as waveguides. Wavesolutions in such structures may be found by a method calledthe Waveguide Finite Element Method or WFEM. LÄS MER

  5. 5. Postprocessing Techniques and Adaptivity in the Finite Element Method

    Detta är en avhandling från Chalmers University of Technology

    Författare :Fethi Abdulwahab; Chalmers tekniska högskola.; Chalmers University of Technology.; [1995]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsbyggnadsteknik och arkitektur; Civil engineering and architecture; Teknisk mekanik; Engineering mechanics; finite element; superconvergence; postprocessing; error estimation; adaptivity;

    Sammanfattning : The Finite Element (FE) method is an approximate method and as such the accuracy of its solutions must be controlled to allow for a reliable application. This thesis deals with error estimation and improvements of the FE solutions based on superconvergent properties of the FE solution in certain points. LÄS MER