Magnus Ekh

Professor at Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Main research topic is modelling of mechanical behaviour of materials on different scales. Most of the research is devoted to modelling of the cyclic behaviour of metals. A focus area of the research is the development of macroscopic models that should capture phenomena such as cyclic ratcheting behaviour, temperature dependence, creep deformations and, for large strains, the evolution of anisotropy. Another focus area of the research is the development of crystal plasticity models together with multi-scale modelling for polycrystals.

Source: chalmers.se

Projects

2017–2019

Self-consistent modelling for neutron scattering applications

Magnus Hörnqvist Colliander Materials Microstructure
Magnus Ekh Material and Computational Mechanics
Hongjia Li Materials Microstructure
Chalmers

2012–2013

Multiscale modeling of pearlitic steel

Magnus Ekh Material and Computational Mechanics
Swedish Research Council (VR)

There might be more projects where Magnus Ekh participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

Hierarchical and Heterogeneous Bioinspired Composites-Merging Molecular Self-Assembly with Additive Manufacturing

Anand Kumar Rajasekharan, Romain Bordes, Carl Sandström et al
Small. Vol. 13 (28)
Journal article
2017

Modelling of grey cast iron for application to brake discs for heavy vehicles

Gael le Gigan, Magnus Ekh, Tore V Vernersson et al
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. Vol. 231 (1), p. 35-49
Journal article
2017

A methodology to predict thermomechanical cracking of railway wheel treads: From experiments to numerical predictions

Ali Esmaeili, Mandeep Singh Walia, Kazuyuki Handa et al
International Journal of Fatigue. Vol. 105, p. 71-85
Journal article
2017

A comparison of two frameworks for kinematic hardening in hyperelasto-plasticity

Knut Andreas Meyer, Magnus Ekh
Conference contribution
2017

Computational homogenization of mesoscale gradient viscoplasticity

Kenneth Runesson, Magnus Ekh, Fredrik Larsson
Computer Methods in Applied Mechanics and Engineering. Vol. 317, p. 927-951
Journal article
2016

COMPUTATIONAL ISSUES OF GRADIENT-EXTENDED CRYSTAL INELASTICITY

Kristoffer Carlsson, Magnus Ekh, Kenneth Runesson et al
Paper in proceedings
2016

3D grain structure modelling of intergranular fracture in forged Haynes 282

Rebecka Brommesson, Magnus Ekh, Ceena Joseph
Engineering Fracture Mechanics. Vol. 154, p. 57-71
Journal article
2016

Experimental observations and modelling of cyclic and relaxation behaviour of the Ni-based superalloy Haynes 282

Rebecka Brommesson, Magnus Ekh, Christer Persson
International Journal of Fatigue. Vol. 87, p. 180-191
Journal article
2016

Three-dimensional modelling of differential railway track settlement using a cycle domain constitutive model

Xin Li, Magnus Ekh, Jens Nielsen
International Journal for Numerical and Analytical Methods in Geomechanics. Vol. 40 (12), p. 1758-1770
Journal article
2016

A framework for geometrically non-linear gradient extended crystal plasticity coupled to heat conduction and damage

Magnus Ekh, Swantje Bargmann
MULTISCALE AND MULTIPHYSICS MECHANICS. Vol. 1 (2), p. 171-188
Journal article
2016

A comparison of the primal and semi-dual variational formats of gradient-extended crystal inelasticity

Kristoffer Carlsson, Fredrik Larsson, Magnus Ekh et al
Computational Mechanics
Journal article
2015

MODELING EVOLUTION OF ANISOTROPY IN PEARLITIC STEEL DURING COLD WORKING

Knut Andreas Meyer, Magnus Ekh, Jim Brouzoulis et al
Proceedings of the NSCM28, p. 111-114
Conference contribution
2015

Thermomechanical cracking of railway wheel treads: a combined experimental and numerical approach

Ali Esmaeili, Sara Caprioli, Anders Ekberg et al
Proceedings of the 10th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2015), p. 8-
Paper in proceedings
2015

High Temperature Tread Braking Simulations Employing Advanced Modelling of Wheel Materials

Ali Esmaeili, Tore V Vernersson, Dimitrios Nikas et al
Paper in proceedings
2015

Correlation between crack length and load drop for low-cycle fatigue crack growth in Ti-6242

Rebecka Brommesson, Magnus Ekh, Magnus Hörnqvist Colliander
International Journal of Fatigue. Vol. 81, p. 1-9
Journal article
2015

Simulation of high pressure torsion tests of pearlitic steel

NASIM LARIJANI, C. Kammerhofer, Magnus Ekh
Journal of Materials Processing Technology. Vol. 223, p. 337-343
Journal article
2015

Computational modeling issues of gradient-extended viscoplasticity

Kristoffer Carlsson, Magnus Ekh, Fredrik Larsson et al
Paper in proceedings
2015

Simulation of material degradation in track switches

Rostyslav Skrypnyk, Jim Brouzoulis, Magnus Ekh et al
Proceedings of the twenty eighth nordic seminar on computational mechanics, p. 157-159
Conference contribution
2014

Low-Cycle Fatigue Crack Growth in Ti-6242 at Elevated Temperature

Rebecka Brommesson, Magnus Hörnqvist Colliander, Magnus Ekh
Advanced Materials Research. Vol. 891-892, p. 422-427
Paper in proceedings
2014

A comparison of approaches to model anisotropy evolution in pearlitic steel

Magnus Ekh, NASIM LARIJANI, Erik Lindfeldt
Paper in proceedings
2014

Modelling of cyclic behaviour of Haynes 282 at elevated temperatures

Rebecka Brommesson, Magnus Ekh
Materials at High Temperatures. Vol. 31 (2), p. 121-130
Journal article
2014

Using DIC to Identify Microscale Strain Fields from in-situ SEM Images of a Pearlitic Steel

Erik Lindfeldt, Magnus Ekh, Krste Cvetkovski et al
Experimental Mechanics. Vol. 54 (9), p. 1503-1513
Journal article
2014

Simulation of high pressure torsion tests of pearlitic steel

NASIM LARIJANI, Christoph Kammerhofer, Magnus Ekh
Preprint
2013

The effect of anisotropy on crack propagation in pearlitic rail steel

NASIM LARIJANI, Jim Brouzoulis, Martin Schilke et al
Wear. Vol. 314 (1-2), p. 57-68
Journal article
2013

Modeling of Anisotropy Evolution in Pearlitic Steel

NASIM LARIJANI, Magnus Ekh
Conference contribution
2013

The effect of anisotropy on crack propagation in pearlitic rail steel

NASIM LARIJANI, Jim Brouzoulis, Martin Schilke et al
Wear. Vol. 314 (1-2), p. 57-68
Journal article
2013

Microscopic temperature field prediction during adiabatic loading using gradient extended crystal plasticity

Swantje Bargmann, Magnus Ekh
International Journal of Solids and Structures. Vol. 50 (6), p. 899-906
Journal article
2012

On the prediction of macroscopic yield surfaces for a pearlitic steel using computational homogenization

Erik Lindfeldt, Magnus Ekh
Journal of Multiscale Modelling. Vol. 4 (2)
Journal article
2012

Crack propagation in rails under rolling contact fatigue loading conditions based on material forces

Jim Brouzoulis, Magnus Ekh
International Journal of Fatigue. Vol. 45, p. 98-105
Journal article
2012

Hybrid micro-macromechanical modelling of anisotropy evolution in pearlitic steel

NASIM LARIJANI, Göran Johansson, Magnus Ekh
European Journal of Mechanics, A/Solids. Vol. 38, p. 37-47
Journal article
2012

Experiments and Modelling of the Cyclic Behaviour of Haynes 282

Rebecka Brommesson, Magnus Ekh
Technische Mechanik. Vol. 32 (2-5), p. 130-145
Paper in proceedings
2012

On the Prediction of Anisotropy Evolution in Polycrystalline Multiphase Materials

Erik Lindfeldt, Magnus Ekh
Conference contribution
2012

Multiscale modeling of the mechanical behaviour of pearlitic steel

Erik Lindfeldt, Magnus Ekh
Technische Mechanik. Vol. 32 (2-5), p. 380-
Journal article
2012

Crack propagation in rails under rolling contact fatigue loading conditions based on material forces

Jim Brouzoulis, Magnus Ekh
International Journal of Fatigue. Vol. 45, p. 98-105
Journal article
2012

The effect of anisotropy on crack propagation in pearlitic rail steel

NASIM LARIJANI, Jim Brouzoulis, Martin Schilke et al
9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2012; Chengdu; China; 27 August 2012 through 30 August 2012, p. 432-441
Paper in proceedings
2012

Modelling of the cyclic behaviour of Haynes 282, including cyclic softening

Rebecka Brommesson, Magnus Ekh
Paper in proceedings
2012

On the computational homogenization of mesoscale gradient viscoplasticity

Kenneth Runesson, Magnus Ekh, Fredrik Larsson
Proceedings of the 25th Nordic Seminar on Computational Mechanics, NSCM25, K. Persson, J. Revsted, G. Sandberg and M. Wallin (eds.), p. 147-148
Paper in proceedings
2011

Modelling of the cyclic behaviour of Haynes 282

Rebecka Brommesson, Magnus Ekh
Svenska Mekanikdagar 13-15 juni 2011 Chalmers Göteborg, p. 97-
Conference contribution
2011

Computational mechanics-based modeling of size-dependent hardening

Swantje Bargmann, Magnus Ekh
PAMM Proceeding in Applied Mathematics and Mechanics. Vol. 11, p. 943-946
Paper in proceedings
2011

Experiments and modelling of the cyclic behaviour of Haynes 282

Rebecka Brommesson, Lisa Grauers, Magnus Ekh et al
Conference contribution
2011

Modeling of anisotropy evolution and cyclic behavior of pearlitic steel

NASIM LARIJANI, Magnus Ekh
Conference contribution
2011

Multiscale modeling of pearlitic steel

Erik Lindfeldt, Magnus Ekh
Svenska mekanikdagar 13-15 Juni, p. 100-
Paper in proceedings
2011

Prediction of Wear and Plastic Flow in Rails - Test Rig Results, Model Calibration and Numerical Prediction

Jim Brouzoulis, Peter Torstensson, Richard Stock et al
Wear. Vol. 271 (1-2), p. 92-99
Journal article
2011

Crack propagation in rails under RCF loading conditions based on material forces

Jim Brouzoulis, Magnus Ekh
Proceedings of NSCM-24, the 24th Nordic Seminar on Computational Mechanics, p. 227-229
Conference contribution
2011

Crack propagation in rails based on the concept of material forces

Jim Brouzoulis, Magnus Ekh
Proceedings för Svenska Mekanikdagar SMD2011, p. 145-
Conference contribution
2011

Crack propagation in rails based on the concept of material forces

Jim Brouzoulis, Magnus Ekh
Proc. Int. Conf. on computational modeling of fracture and failure of materials and structures (CFRAC 2011), p. 122-
Conference contribution
2011

Influence of grain boundary conditions on modeling of size-dependence in polycrystals

Magnus Ekh, Swantje Bargmann, Mikkel Grymer
Acta Mechanica. Vol. 218 (1-2), p. 103-113
Journal article
2011

Simulation of wheel-rail contact and damage in switches & crossings

Anders Johansson, Björn Pålsson, Magnus Ekh et al
Wear. Vol. 271 (1-2), p. 472-481
Journal article
2011

An extended crystal plasticity model for latent hardening in polycrystals

Swantje Bargmann, B. Svendsen, Magnus Ekh
Computational Mechanics. Vol. 48 (6), p. 631-645
Journal article
2011

Multiscale modeling of the mechanical behaviour of pearlitic steel

Erik Lindfeldt, Magnus Ekh
Paper in proceedings
2010

Computational modeling of the interlamellar spacing in pearlitic steel

Erik Lindfeldt, Magnus Ekh, Håkan Johansson
Journal of Logic and Computation, p. 150-152
Conference contribution
2010

On the modeling of deformation induced anisotropy of pearlitic steel

NASIM LARIJANI, Magnus Ekh, Göran Johansson et al
Journal of Logic and Computation
Conference contribution
2010

Geometry and stiffness optimization for switches and crossings, and simulation of material degradation

D. Nicklisch, Elias Kassa, Jens Nielsen et al
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. Vol. 224 (F4), p. 279-292
Journal article
2010

Computational modeling of gradient hardening in polycrystals

Swantje Bargmann, Magnus Ekh, Bob Svendsen et al
Technische Mechanik. Vol. 30 (4), p. 316-323
Journal article
2010

Modeling of polycrystals with gradient crystal plasticity: A comparison of strategies

Swantje Bargmann, Magnus Ekh, Kenneth Runesson et al
Philosophical Magazine. Vol. 90 (10), p. 1263-1288
Journal article
2009

Computational modelling of inelastic polycrystals with internal lengthscales

Swantje Bargmann, Bob Svendsen, Magnus Ekh et al
Conference contribution
2009

Simulation of wheel–rail contact and subsequent material degradation in switches & crossings

Dirk Nicklisch, Jens Nielsen, Magnus Ekh et al
Paper in proceedings
2009

Simulation of wheel-rail contact and damage in switches & crossings

Anders Johansson, Björn Pålsson, Magnus Ekh et al
8th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, 15th-18th September, Firenze, Italy, p. 987-996
Paper in proceedings
2009

Gradient crystal plasticity – theoretical and computational aspects

Swantje Bargmann, Bob Svendsen, Magnus Ekh
Conference contribution
2009

gradient theories of large deformation anisotropic plasticity

Swantje Bargmann, Bob Svendsen, Magnus Ekh et al
Paper in proceedings
2009

Gradient crystal plasticity approaches for computational modeling of

Swantje Bargmann, Magnus Ekh, Kenneth Runesson et al
Conference contribution
2009

Aspects of viscoplasticty on manufacturing induced out-of-roundness in engine cylinder liners

Johan Ahlström, Ragnar Larsson, Magnus Ekh
Paper in proceedings
2009

On the modeling of deformation induced anisotropy of pearlitic steel

NASIM LARIJANI, Magnus Ekh, Erik Lindfeldt
Proceedings of the twenty second nordic seminar on computational mechanics, p. 55-57
Conference contribution
2009

Prediction of Wear and Plastic Flow in Rails - Experimental Test Rig Results, Model Calibration and Numerical Prediction

Jim Brouzoulis, Peter Torstensson, Magnus Ekh et al
Proceedings till Svenska Mekanikdagarna 2009 i Södertälje, p. 42-
Paper in proceedings
2009

On the modelling of gradient hardening in crystal (visco)plasticity

Swantje Bargmann, Bob Svendsen, Magnus Ekh et al
Conference contribution
2008

Towards computational modeling of grain size dependence in microstructure models of polycrystals

Swantje Bargmann, Magnus Ekh, Kenneth Runesson et al
21st Nordic Seminar on Computational Mechanics, p. 250-252
Paper in proceedings
2008

Towards computational modelling of grain size dependence in microstructure models of polycrystals

Swantje Bargmann, Magnus Ekh, Kenneth Runesson et al
Conference contribution
2007

On the modeling of large ratcheting strains with large time increments

Göran Johansson, Magnus Ekh
Engineering Computations. Vol. 24 (3-4), p. 221-236
Journal article
2007

On the modeling of grain size dependent behavior of polycrystals

Magnus Ekh, Mikkel Grymer, Kenneth Runesson
IUTAM Symposium Multi-Scale Plasticity of Crystalline Materials, p. 69-70
Conference poster
2007

Gradient crystal plasticity as part of the computational modelling of polycrystals

Magnus Ekh, Mikkel Grymer, Kenneth Runesson et al
International Journal for Numerical Methods in Engineering. Vol. 72 (2), p. 197-220
Journal article
2007

Cyclic stress-strain behavior and load sharing in duplex stainless steels: Aspects of modeling and experiments

Robert Lillbacka, G. Chai, Magnus Ekh et al
Acta Materialia. Vol. 55 (16), p. 5359-5368
Journal article
2006

Computational aspects on multiscale modeling of polycrystallines with gradient crystal plasticity

Magnus Ekh, Mikkel Grymer, Kenneth Runesson
19th Nordic Seminar on Computational Mechanics, Lund, Eds. Dahlbom, Fuchs, Persson, Ristinmaa, Sandberg and Svensson, p. 88-90
Paper in proceedings
2006

A model for short crack propagation in polycrystalline materials

Robert Lillbacka, Erland Johnson, Magnus Ekh
Engineering Fracture Mechanics. Vol. 73 (2), p. 223-232
Journal article
2006

Modeling the Grain Size Effect using Gradient Hardening and Damage in Crystal (Visco) Plasticity

Mikkel Grymer, Magnus Ekh, Kenneth Runesson et al
III European Conference on Computational Mechanics, Solids, Structures and Coupled Problems in Engineering, June 5-8 2006, Lisbon, Portugal, C.A. Mota Soares et.al. (eds.), p. 69-
Conference contribution
2006

On the modeling of evolving anisotropy and large strains in pearlitic steel

Göran Johansson, Magnus Ekh, Kenneth Runesson
Journal article
2006

On the modeling of evolving anisotropy and large strains in pearlitic steel

Göran Johansson, Magnus Ekh
European Journal of Mechanics / A Solids. Vol. 25, p. 1041-1060
Journal article
2006

Efficient iteration schemes for anisotropic hyperelasto-plasticity

Magnus Ekh, Andreas Menzel
International Journal for Numerical Methods in Engineering. Vol. 66 (4), p. 707-721
Journal article
2006

Parameter identification and modeling of large ratcheting strains in carbon steel

Göran Johansson, Johan Ahlström, Magnus Ekh
Computers and Structures. Vol. 84, p. 1002-1011
Journal article
2006

Modeling the Grain Size Effect using Gradient Hardening and Damage in Crystal (Visco) Plasticity

Mikkel Grymer, Magnus Ekh, Kenneth Runesson
Conference contribution
2005

Calibration of a multiscale material model based on macroscale test data

Robert Lillbacka, Magnus Ekh
Computational Plasticity, 2005, Barcelona, Eds. Owen, Onate and Suarez, p. 1174-1176
Paper in proceedings
2005

Gradient hardening and damage in crystal (visco)plasticity

Magnus Ekh, Mikkel Grymer, Kenneth Runesson et al
Computational plasticity, 2005, Barccelona, Eds. Owen, Onate and Suarez, p. 751-754
Paper in proceedings
2005

A framework for multiplicative elastoplasticity with kinematic hardening coupled to anisotropic damage

Andreas Menzel, Magnus Ekh, Kenneth Runesson et al
International Journal of Plasticity. Vol. 21 (3), p. 397-434
Journal article
2005

Modeling of large ratcheting strains with large time increments

Göran Johansson, Magnus Ekh
Computational plasticity VIII. Vol. 2, p. 763-7654
Conference contribution
2005

Computational modeling of inelastic large ratcheting strains

Göran Johansson, Magnus Ekh, Kenneth Runesson
International Journal of Plasticity. Vol. 21 (5), p. 955-980
Journal article
2004

A model framework for anisotropic damage coupled to crystal (visco)plasticity

Magnus Ekh, Robert Lillbacka, Kenneth Runesson
International Journal of Plasticity. Vol. 20 (12), p. 2143-2159
Journal article
2004

Aspects on Computational Meso-Macro-Scale Constitutive Modeling

Kenneth Runesson, Fredrik Larsson, Magnus Ekh et al
Eccomas 2004 Book of Abstracts. Vol. 1, p. 11-
Conference contribution
2004

Modeling growth of small cracks in a polycrystal

R. Lillbacka, E. Johansson, Magnus Ekh et al
Paper in proceedings
2004

Gradient hardening and damage in crystal (visco)plasticity

Magnus Ekh, Thomas Svedberg, Kenneth Runesson
Paper in proceedings
2003

Anisotropic damage with the MCR-effect coupled to plasticity

Magnus Ekh, Andreas Menzel, Kenneth Runesson et al
International Journal of Engineering Sciences. Vol. 41 (13-14), p. 1535-1551
Journal article
2003

A framework for hyperelasto-plasticity with kinematic hardening and anisotropic damage

Magnus Ekh, Andreas Menzel, Kenneth Runesson et al
Computational Plasticity VII 2003, Barcelona, Eds. Owen, Onate and Suarez, p. 169-170
Paper in proceedings
2003

A mixed variational formulation for rve-computations

Fredrik Larsson, R. Lillbacka, Magnus Ekh et al
Conference contribution
2003

Computational modeling of large inelastic ratchetting strains

Göran Johansson, Magnus Ekh, Kenneth Runesson
Conference contribution
2003

Fatigue crack initiation based on simulations on the mesoscopic scale

Robert Lillbacka, Magnus Ekh, Erland Johnson et al
Paper in proceedings
2002

Anisotropic damage modeling based on mesomechanical simulations

Robert Lillbacka, Magnus Ekh, Kenneth Runesson et al
World Congress on Computational Mechanics V, 2002, Vienna. Vol. 1, p. 190-
Paper in proceedings
2002

Anisotropic damage coupled to plasticity: modelling based on the effective configuration concept

Andreas Menzel, Magnus Ekh, Paul Steinmann et al
International Journal of Numerical Methods in Engineering. Vol. 54 (10), p. 1409-1430
Journal article
2002

A framework for hyperelasto-plasticity with kinematic hardening and anisotropic damage

Magnus Ekh, Andreas Menzel, Kenneth Runesson
15th Nordic Seminar on Computational Mechanics, 2002, Aalborg, Eds. Lund, Olhoff and Stegmann, p. 75-77
Paper in proceedings
2001

Thermo-Elastic-Viscoplastic Modeling of IN792

Magnus Ekh
Journal of the mechanical behavior of materials. Vol. 12 (6), p. 359-387
Journal article
2001

A Class of Thermo-Hyperelastic-Viscoplastic Models for Porous Materials: Theory and Numerics

Lennart Mähler, Magnus Ekh, Kenneth Runesson
International Journal of Plasticity. Vol. 17, p. 943-969
Journal article
2001

Modeling and Numerical Issues in Hyperelasto-plasticity with Anisotropy

Magnus Ekh, Kenneth Runesson
International Journal of Solids and Structures. Vol. 38, p. 9461-9478
Journal article
2001

Large strain plasticity coupled to anisotropic damage based on the fictitious configuration concept

Andreas Menzel, Magnus Ekh, Paul Steinmann et al
The 4th International ESAFORM Conference on Material Forming, 2001, Liege, Ed. Habraken, p. 245-248
Paper in proceedings
2000

Models for Cyclic Ratchetting Plasticity - Integration and Calibration

Magnus Ekh, Anders Johansson, Hans Thorberntsson et al
Journal of Engineering Materials and Technology. Vol. 122, p. 49-55
Journal article
2000

Bifurcation results for plasticity coupled to damage with MCR-effect

Magnus Ekh, Kenneth Runesson
International Journal of Solids Structures. Vol. 37, p. 1975-1996
Journal article