Padesát let metody konečných prvků
Parallel solution of elasticity problems using overlapping aggregations
The finite element (FE) solution of geotechnical elasticity problems leads to the solution of a large system of linear equations. For solving the system, we use the preconditioned conjugate gradient (PCG) method with two-level additive Schwarz preconditioner. The preconditioning is realised in parallel. A coarse space is usually constructed using an aggregation technique. If the finite element spaces for coarse and fine problems on structural grids are fully compatible, relations between elements...
Parameters identification of material models based on the inverse analysis
The paper presents an application of the inverse analysis to the identification of two models: a phase transformation model and a rheological model. The optimization algorithm for the inverse analysis was tested for various techniques of searching for the minimum: derivative-free and gradient methods, as well as genetic algorithms. Simulation results were validated for microalloyed niobium steel. An optimization strategy, which is adequate for the inverse analysis, is suggested.
Partial exact controllability and exponential stability in higher-dimensional linear thermoelasticity
Partial exact controllability and exponential stability in higher-dimensional linear thermoelasticity
The problem of partial exact boundary controllability and exponential stability for the higher-dimensional linear system of thermoelasticity is considered. By introducing a velocity feedback on part of the boundary of the thermoelastic body, which is clamped along the rest of its boundary, to increase the loss of energy, we prove that the energy in the system of thermoelasticity decays to zero exponentially. We also give a positive answer to a related open question raised by Alabau and Komornik...
Partial Regularity for Certain classes for Polyconvex functionals Related to Nonlinear Elasticity.
Peltier effect of superconductor-semiconductor mesoscopic device.
Performance of composite implicit time integration scheme for nonlinear dynamic analysis.
Periodic homogenization of a non-coercive class of functionals.
Periodic solutions of a piecewise linear beam equation damping and nonconstant load.
Periodic solutions of nonlinear vibrating beams.
Periodic solutions to certain evolution inequalities
Periodic traveling waves in the system of linearly coupled nonlinear oscillators on 2D-lattice
In this paper we obtain results on existence of non-constant periodic traveling waves with arbitrary speed in infinite system of linearly coupled nonlinear oscillators on a two-dimensional lattice. Sufficient conditions for the existence of such solutions are obtained with the aid of critical point method and linking theorem.
Periodic vibrations of an extensible beam
Periodically forced damped beams resting on nonlinear elastic bearings
Peristaltic motion of a Johnson-Segalman fluid in a planar channel.
Perspective of Interfaces from Stand Point of Continuum Physics
Perturbation of a biharmonic eigenvalue problem
Perturbations en théorie spectrale
Petites perturbations et équations d'Euler pour l'aéroélasticité