Search for dissertations about: "modified Newton methods"

Showing result 1 - 5 of 7 swedish dissertations containing the words modified Newton methods.

  2. 1. Approaches to accelerate methods for solving systems of equations arising in nonlinear optimization

    Author : David Ek; Anders Forsgren; Jacek Gondzio; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nonlinear optimization; mathematical programming; interior-point methods; approximate solutions to systems of linear equations; method of conjugate gradients; quasi-Newton methods; modified Newton methods; Ickelinjär optimering; matematisk programmering; inre-punktsmetoder; approximativa lösningar till linjära ekvationssystem; konjugerade gradientmetoden; kvasi-Newtonmetoder; modifierade Newtonmetoder.; Optimization and Systems Theory; Optimeringslära och systemteori;

    Abstract : Methods for solving nonlinear optimization problems typically involve solving systems of equations. This thesis concerns approaches for accelerating some of those methods. In our setting, accelerating involves finding a trade-off between the computational cost of an iteration and the quality of the computed search direction. READ MORE

  4. 2. Continuum models and numerical methods for tribological systems

    Author : Peter Jarl Ireman; Linköpings universitet; []
    Keywords : ;

    Abstract : This thesis concerns the formulation of continuum mechanical models and the development of numerical methods for frictional heating, wear and damage in tribological systems.The models are formulated in the spirit of generalized standard materials, i.e. READ MORE

  5. 3. Studies of reursive projection methods for convergence acceleration of steady state Calculations

    Author : Joakim Möller; KTH; []
    Keywords : ;

    Abstract : this paper we have defined two classes of projectionmethods. RPM(m) and NPGS(m), where RPM(1) is the classicalscheme due to Shroff \&Keller. Following the ideas in Lustet al., we obtain NPGS(m). READ MORE

  6. 4. Simulation of contact, friction and wear in gears : a finite element approach

    Author : Olle Lundvall; Linköpings universitet; []
    Keywords : Gears; Gear noise; Contact mechanics; Simulation; Friction; Wear; Transmission error;

    Abstract : In this thesis, resent methods in computational contact mechanics is brought into the process of gear design. The finite element method is used to model two elastic bodies in contact. By defining a contact interface between these two bodies, constitutive laws, regarding normal contact, friction and wear, are included. READ MORE

  7. 5. Singular Value Computations for Toeplitz Matrices and Subspace Tracking

    Author : Eva Lundström; Henk van der Vorst; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis addresses the problem of computing the largest singular values and corresponding singular vectors of a Toeplitz matrix. These are often requested in signal processing and system identification to extract the signal from the noise. READ MORE