Results 21 to 30 of about 18,872 (309)

Approximate Solution of a Reduced-Type Index-k Hessenberg Differential-Algebraic Control System

open access: yesJournal of Applied Mathematics, 2021
This study focuses on developing an efficient and easily implemented novel technique to solve the index-k Hessenberg differential-algebraic equation (DAE) with input control.
Ghazwa F. Abd, Radhi A. Zaboon
doaj   +1 more source

Variational Time Integrators in Computational Solid Mechanics [PDF]

open access: yes, 2003
This thesis develops the theory and implementation of variational integrators for computational solid mechanics problems, and to some extent, for fluid mechanics problems as well.
Lew, Adrián José
core   +1 more source

Thermomechanical Variational Principles for Dissipative Materials with Application to Strain Localization in Bulk Metallic Glasses [PDF]

open access: yes, 2004
This thesis is concerned with variational principles for general coupled thermomechanical problems in dissipative materials including finite elastic and plastic deformation, non-Newtonian viscosity, rate sensitivity, arbitrary flow and hardening rule, as
Yang, Qiang
core   +1 more source

Mixed type symmetric and self duality for multiobjective variational problems with support functions [PDF]

open access: yesYugoslav Journal of Operations Research, 2013
In this paper, a pair of mixed type symmetric dual multiobjective variational problems containing support functions is formulated. This mixed formulation unifies two existing pairs Wolfe and Mond-Weir type symmetric dual multiobjective variational ...
Husain I., Mattoo Rumana G.
doaj   +1 more source

Variational Integrators [PDF]

open access: yes, 2004
Variational integrators are a class of discretizations for mechanical systems which are derived by discretizing Hamilton's principle of stationary action.
West, Matthew
core   +1 more source

Some Variational Principles for Coupled Thermoelasticity

open access: yesJournal of Engineering, 2013
The nonlinear thermoelasticity of type II proposed by Green and Naghdi is considered. The thermoelastic structural model is formulated in a quasistatic range, and the related thermoelastic variational formulation in the complete set of state variables is
Francesco Marotti de Sciarra
doaj   +1 more source

Hamiltonian Variational Formulation of Three-Dimensional, Rotational Free-Surface Flows, with a Moving Seabed, in the Eulerian Description

open access: yesFluids, 2022
Hamiltonian variational principles have provided, since the 1960s, the means of developing very successful wave theories for nonlinear free-surface flows, under the assumption of irrotationality.
Constantinos P. Mavroeidis   +1 more
doaj   +1 more source

Numerical analysis of a relaxed variational model of hysteresis in two-phase solids [PDF]

open access: yes, 2001
This paper presents the numerical analysis for a variational formulation of rate-independent phase transformations in elastic solids due to Mielke et al.
Carstensen, Carsten   +3 more
core   +1 more source

A VARIATIONAL FORMULATION OF SYMPLECTIC NONCOMMUTATIVE MECHANICS [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2007
The standard lore in noncommutative physics is the use of first order variational description of a dynamical system to probe the space noncommutativity and its consequences in the dynamics in phase space. As the ultimate goal is to understand the inherent space noncommutativity, we propose a variational principle for noncommutative dynamical systems ...
Cortese, Ignacio, García, J. Antonio
openaire   +3 more sources

Fractional variational problems depending on indefinite integrals [PDF]

open access: yes, 2012
We obtain necessary optimality conditions for variational problems with a Lagrangian depending on a Caputo fractional derivative, a fractional and an indefinite integral.
Pooseh, Shakoor   +8 more
core   +2 more sources

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