Sökning: "geometric parameter"

Visar resultat 1 - 5 av 58 avhandlingar innehållade orden geometric parameter.

  1. 1. Buckling analysis of trapezoidally corrugated panels under in-plane loading using spline finite strip method

    Författare :Ruoshan Luo; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; longitudinal compression; patch loading; elastic buckling; spline finite strip method; geometric parameter; in-plane loading; shear loading; combined longitudinal compression and shear; loading position;

    Sammanfattning : .... LÄS MER

  3. 2. Fixed-Parameter Algorithms for Optimal Convex Partitions and Other Results

    Författare :Magdalene Grantson Borgelt; Data Vetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; control; Datalogi; numerical analysis; Convex Partition; Computer science; Triangulation; kontroll; system; numerisk analys; systems; Fixed-Parameter Algorithm; Spanning Tree;

    Sammanfattning : In this thesis I study two-dimensional geometric optimization problems for which it is difficult to find efficient, exact, deterministic algorithms. All known solutions to these problems require time that is exponential in the total size of the input. LÄS MER

  4. 3. Methods for Simulation and Characterization of Nonlinear Mechanical Structures

    Författare :Martin Magnevall; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear dynamics; nonlinear parameter estimation; harmonic balance; reverse-path; zero-memory nonlinear systems; hysteretic nonlinearities; dry-friction; geometric nonlinearities;

    Sammanfattning : Trial and error and the use of highly time-consuming methods are often necessary for modeling, simulating and characterizing nonlinear dynamical systems. However, for the rather common special case when a nonlinear system has linear relations between many of its degrees of freedom there are particularly interesting opportunities for more efficient approaches. LÄS MER

  5. 4. Modelling of Terahertz Planar Schottky Diodes

    Författare :Aik-Yean Tang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; S-parameter extraction; Electro-thermal; Schottky diodes; Skin effect; Electromagnetic; Frequency multipliers; High-power frequency multiplier; Current crowding; Proximity effect; Submillimetre wave generation and detection; Geometric modelling; Gallium Arsenide;

    Sammanfattning : This thesis deals with the modelling of THz planar Schottky diodes, focusing on analyses of the geometry- dependent parasitics and the diode chip thermal management. Moving towards higher operating frequencies, the electromagnetic couplings pose significant limitations on the diode performance. LÄS MER

  7. 5. Reconstruction of geometric road data using remotely sensed imagery

    Författare :Dan Klang; KTH; []
    Nyckelord :;

    Sammanfattning : The objective of this thesis is to find an automatic methodfor accurate and robust reconstruction of geometric road data.Remotely sensed images serve as the main source during thereconstruction process. LÄS MER