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20052026
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20 papers · 1 filter

math.AP2023★ 2 cited

Curvature-dependent Eulerian interfaces in elastic solids

Katharina Brazda, Martin Kružík, Fabian Rupp +1

We propose a sharp-interface model for a hyperelastic material consisting of two phases. In this model, phase interfaces are treated in the deformed configuration, resulting in a f…

math.AP2022★ 4 cited

Minimal Energy for Geometrically Nonlinear Elastic Inclusions in Two Dimensions

Ibrokhimbek Akramov, Hans Knüpfer, Martin Kružík +1

We are concerned with a variant of the isoperimetric problem, which in our setting arises in a geometrically nonlinear two-well problem in elasticity. More precisely, we investigat…

math.AP2022★ 21 cited

Nonlinear and Linearized Models in Thermoviscoelasticity

Rufat Badal, Manuel Friedrich, Martin Kružík

We consider a quasistatic nonlinear model in thermoviscoelasticity at a finite-strain setting in the Kelvin-Voigt rheology where both the elastic and viscous stress tensors comply…

math.AP2021★ 6 cited

A reduced model for plates arising as low energy -limit in nonlinear magnetoelasticity

Marco Bresciani, Martin Kružík

We investigate the problem of dimension reduction for plates in nonlinear magnetoelasticity. The model features a mixed Eulerian-Lagrangian formulation, as magnetizations are defin…

math.AP2021★ 3 cited

Crack occurrence in bodies with gradient polyconvex energies

Martin Kružík, Paolo Maria Mariano, Domenico Mucci

Energy minimality selects among possible configurations of a continuous body with and without cracks those compatible with assigned boundary conditions of Dirichlet-type. Crack pat…

math.AP2020

Elastoplasticity of gradient-polyconvex materials

Martin Kružík, Jiří Zeman

We propose a model for rate-independent evolution in elastoplastic materials under external loading, which allows large strains. In the setting of strain-gradient plasticity with m…

math.AP2020★ 13 cited

Magnetoelastic thin films at large strains

Elisa Davoli, Martin Kružík, Paolo Piovano +1

Starting from the three-dimensional setting, we derive a limit model of a thin magnetoelastic film by means of Γ-convergence techniques. As magnetization vectors are defined on the…

math.AP2020★ 21 cited

Global invertibility for orientation-preserving Sobolev maps via invertibility on or near the boundary

Stefan Krömer

By a result of John Ball (1981), a locally orientation preserving Sobolev map is almost everywhere globally invertible whenever its boundary values admit a homeomorphic extension.…

math.AP2019★ 21 cited

Derivation of von Kármán plate theory in the framework of three-dimensional viscoelasticity

Manuel Friedrich, Martin Kružík

We apply a quasistatic nonlinear model for nonsimple viscoelastic materials at a finite-strain setting in the Kelvin's-Voigt's rheology to derive a viscoelastic plate model of von…

math.AP2017★ 15 cited

Quasistatic elastoplasticity via Peridynamics: existence and localization

Martin Kružík, Carlos Mora-Corral, Ulisse Stefanelli

Peridynamics is a nonlocal continuum-mechanical theory based on minimal regularity on the deformations. Its key trait is that of replacing local constitutive relations featuring sp…

math.AP2017

Weak lower semicontinuity by means of anisotropic parametrized measures

Agnieszka Kałamajska, Stefan Krömer, Martin Kružík

It is well known that besides oscillations, sequences bounded only in can also develop concentrations, and if the latter occurs, we can at most hope for weak convergence…

math.AP2017★ 1 cited

On the existence of minimisers for strain-gradient single-crystal plasticity

Keith Anguige, Patrick Dondl, Martin Kružík

We prove the existence of minimisers for a family of models related to the single-slip-to-single-plane relaxation of single-crystal, strain-gradient elastoplasticity with -har…

math.AP2016★ 45 cited

Weak lower semicontinuity of integral functionals and applications

Barbora Benešová, Martin Kružík

Minimization is a reoccurring theme in many mathematical disciplines ranging from pure to applied ones. Of particular importance is the minimization of integral functionals that is…

math.AP2015

A sharp interface evolutionary model for shape memory alloys

Hans Knüpfer, Martin Kružík

We show the existence of an energetic solution to a quasistatic evolutionary model of shape memory alloys. Elastic behavior of each material phase/variant is described by polyconve…

math.AP2014★ 23 cited

Finite-dimensional global attractors for parabolic nonlinear equations with state-dependent delay

Igor Chueshov, Alexander Rezounenko

We deal with a class of parabolic nonlinear evolution equations with state-dependent delay. This class covers several important PDE models arising in biology. We first prove well-p…

math.AP2014★ 67 cited

Parabolic partial differential equations with discrete state-dependent delay: classical solutions and solution manifold

Tibor Krisztin, Alexander Rezounenko

Classical solutions to PDEs with discrete state-dependent delay are studied. We prove the well-posedness in a set which is an analogous to the solution manifold used for ordi…

math.AP2013★ 29 cited

Dynamics of second order in time evolution equations with state-dependent delay

Igor Chueshov, Alexander Rezounenko

We deal with a class of second order in time nonlinear evolution equations with state-dependent delay. This class covers several important PDE models arising in the theory ofnonlin…

math.AP2013★ 1 cited

Quasistatic adhesive contact delaminating in mixed mode and its numerical treatment

Martin Kruzik, Christos G. Panagiotopoulos, Tomas Roubicek

An adhesive unilateral contact between visco-elastic bodies at small strains and in a Kelvin-Voigt rheology is scrutinized, neglecting inertia. The flow-rule for debonding the adhe…

math.AP2012★ 5 cited

Thermodynamically-consistent mesoscopic model of the ferro/paramagnetic transition

Barbora Benešová, Martin Kružík, Tomáš Roubíček

A continuum evolutionary model for micromagnetics is presented that, beside the standard magnetic balance laws, includes thermo-magnetic coupling. To allow conceptually efficient c…

math.AP2010

Quasiconvexity at the boundary and concentration effects generated by gradients

Martin Kruzik

We characterize generalized Young measures, the so-called DiPerna-Majda measures which are generated by sequences of gradients. In particular, we precisely describe these measures…