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Fakultät Maschinenbau
Senior Researcher

PD Dr. Tobias Kaiser

Curriculum Vitae

Research

Research Interests

  • Gradient elasticity and gradient plasticity
  • Crystal plasticity
  • Damage and fracture mechanics
  • Anisotropic materials
  • Electro-mechanical coupling
  • Finite-Element-Technology (multi-field formulations)
  • Multiscale material modelling (FE2-, FFT- and wavelet-based)

Journal Reviewer

  • Advances in Industrial and Manufacturing Engineering, Elsevier Journal
  • Computer Methods in Applied Mechanics and Engineering, Elsevier Journal
  • International Journal for Numerical Methods in Engineering, Wiley Journal
  • International Journal of Mechanical Sciences, Elsevier Journal
  • International Journal of Solids and Structures, Elsevier Journal
  • Philosophical Magazine & Philosophical Magazine Letters, Taylor & Francis Journal
  • Proceedings in Applied Mathematics and Mechanics, Wiley Journal
  • Shape Memory and Superelasticity, Springer Journal

Conference Organisation

  • Minisymposium 044: Multiscale Modeling of Complex Microstructures
    ECCOMAS2024, Lisbon, Portugal, June 3-7, 2024
    (with S. Hellebrand, University of Duisburg-Essen and J. Waimann, RWTH Aachen)
  • Section 8: Multiscales and Homogenization
    94th GAMM Annual Meeting, Magdeburg, Germany, March 18-22, 2024
    (with M. Schneider, Karlsruhe Institute of Technology)
  • Minisymposium: Integrating Computational and Experimental Mechanics
    10th GACM Colloquium on Computational Mechanics, Vienna, Austria, September 10-13, 2023
    (together with K. A. Meyer, TU Braunschweig)
  • Young Researchers’ Minisymposium: Material Modelling Across Length Scales
    93rd GAMM Annual Meeting, Dresden, Germany, May 30 - June 02, 2023
    (together with J. Waimann, RWTH Aachen)
  • 3. Industrial Colloquium of the CRC/Transregio 188, Dortmund, Germany, May 10, 2022
    (together with Dorothea Czempas, RWTH Aachen and Richard Ostwald, University of Duisburg-Essen)
  • YAMM Lunch 2020-Young Academics Meet Mentors
    91th GAMM Annual Meeting,
    Kassel, Germany, March 15-19, 2021
    (together with Johanna Waimann, RWTH Aachen University)
  • YAMM Lunch 2019-Young Academics Meet Mentors
    90th GAMM Annual Meeting, Vienna, Austria, February 18-22, 2019
    (together with Johanna Eisenträger, OvGU Magdeburg and Christoph Meier, TU Munich)

Publications

2023

T. Kaiser
Multiscale Multiphysics Material Modelling
Habilitation Thesis, Institute of Mechanics, TU Dortmund University, 2023,
DOI: 10.17877/DE290R-24135.

2019

T. Kaiser:
Computational modelling of non-simple and anisotropic materials
Dissertation, Institute of Mechanics, TU Dortmund University, 2019,
DOI: 10.17877/DE290R-20182.

2015

T. Asmanoglo:
Fibre-Reinforced Composites – Finite Deformation Higher-Gradient Theory and Mixed Finite Element Formulation
Master Thesis, Institute of Mechanics (TU Dortmund University) and Institute of Polymer Product Engineering (JKU Linz), 2015.

2014

T. Asmanoglo
Constitutive Modeling of Evolving Anisotropies in Finite Plasticity
Bachelor Thesis, Computational Solid Mechanics Laboratories (UC Berkeley) and Institute of Mechanics (TU Dortmund University), 2014.

2024

C. Witt, T. Kaiser, A. Menzel
An IGA-FEA model for flexoelectricity-induced healing of microcracks in cortical bone
Computer Methods in Applied Mechanics and Engineering, 425, 116919, 2024,
DOI:  10.1016/j.cma.2024.116919, Open Access.

T. Kaiser, N. von der Höh, A. Menzel
Computational multiscale modelling of material interfaces in electrical conductors
Journal of the Mechanics and Physics of Solids, 186, 105601, 2024
DOI: 10.1016/j.jmps.2024.105601, Open Access.

L. Sobisch, T. Kaiser, T. Furlan, A. Menzel
A user material approach for the solution of multi-field problems in Abaqus: Theoretical foundations, gradient-enhanced damage mechanics and thermo-mechanical coupling
Finite Elements in Analysis & Design, 232, 104105, 2024,
DOI: 10.1016/j.finel.2023.104105, Open Access.

2023

D. Güzel, T. Kaiser, A. Menzel:
A computational multiscale approach towards the modelling of microstructures with material interfaces in electrical conductors
Mathematics and Mechanics of Solids, 1-20, 2023,
DOI: 10.1177/10812865231202721, Open Access.

K. Langenfeld, L. Lingau, J. Gerlach, P. Kurzeja, R. Gitschel, F. Walther, T. Kaiser, T, Clausmeyer:
Low cycle fatigue of components manufactured by rod extrusion: Experiments and modeling
Advances in Industrial and Manufacturing Engineering, 7, 100130, 2023, 
DOI: 10.1016/j.aime.2023.100130, Open Access.

T. Kaiser, T. Raasch, J. J. C. Remmers, M. G. D. Geers:
A wavelet-enhanced adaptive hierarchical FFT-based approach for the efficient solution of microscale boundary value problems
Computer Methods in Applied Mechanics and Engineering, 409, 115959, 2023,
DOI: 10.1016/j.cma.2023.115959, Open Access.

D. Güzel, T. Kaiser, A. Menzel:
A thermo-electro-mechanically coupled cohesive zone formulation for predicting interfacial damage
European Journal of Mechanics A/Solids, 99, 104935, 2023,
DOI: 10.1016/j.euromechsol.2023.104935, Open Access.

C. Witt, T. Kaiser, A. Menzel:
Modelling and numerical simulation of remodelling processes in cortical bone: An IGA approach to flexoelectricity-induced osteocyte apoptosis and subsequent bone cell diffusion
Journal of the mechanics and physics of solids, 173, 105194, 2023,
DOI: 10.1016/j.jmps.2022.105194, Open Access.

2022

T. Kaiser, G. Dehm, C. Kirchlechner, A. Menzel, H. Bishara:
Probing porosity in metals by electrical conductivity: Nanoscale experiments and multiscale simulations
European Journal of Mechanics A/Solids, 97, 104777, 2023,
DOI: 10.1016/j.euromechsol.2022.104777, Open Access

T. Kaiser, J. J. C. Remmers, M. G. D. Geers:
An adaptive wavelet-based collocation method for solving multiscale problems in continuum mechanics
Computational Mechanics, 70, 1335-1357, 2022,
DOI: 10.1007/s00466-022-02207-5, Open Access.

V. Phalke, T. Kaiser, J.-M. Scherer, S. Forest:
Modeling size effects in microwire torsion: A comparison between a Lagrange multiplier-based and a CurlFp gradient crystal plasticity model
European Journal of Mechanics / A Solids, 94, 104550, 2022,
DOI: 10.1016/j.euromechsol.2022.104550.

2021

T. Kaiser, M. J. Cordill, C. Kirchlechner, A. Menzel:
Electrical and mechanical behaviour of metal thin films with deformation-induced cracks predicted by computational homogenisation
International Journal of Fracture, 231(2), 233-242, 2021,
DOI: 10.1007/s10704-021-00582-3, Open Access

T. Kaiser, A. Menzel:
A finite deformation electro-mechanically coupled computational multiscale formulation for electrical conductors
Acta Mechanica, 232(10), 3939-3956, 2021,
DOI: 10.1007/s00707-021-03005-5, Open Access.

T. Kaiser, A. Menzel:
Fundamentals of electro-mechanically coupled cohesive zone formulations for electrical conductors
Computational Mechanics, 68, 51-67, 2021,
DOI: 10.1007/s00466-021-02019-z, Open Access.

C. Witt, T. Kaiser, A. Menzel:
A finite deformation isogeometric finite element approach to fibre-reinforced composites with fibre bending stiffness
Journal of Engineering Mathematics, 1(15), 2021,
DOI: 10.1007/s10665-021-10117-3, Open Access.

T. Kaiser, S. Forest, A. Menzel:
A finite element implementation of the stress gradient theory
Meccanica, 56(5), 1109-1128, 2021,
DOI: 10.1007/s11012-020-01266-3, Open Access.

T. Kaiser, A. Menzel:
An electro-mechanically coupled computational multiscale formulation for electrical conductors
Archive of Applied Mechanics, 91, 1509-1526, 2021,
DOI: 10.1007/s00419-020-01837-6, Open Access.

C. Witt, T. Kaiser, A. Menzel:
An isogeometric finite element approach to fibre-reinforced composites with fibre bending stiffness
Archive of Applied Mechanics, 91, 643-672, 2021,
DOI: 10.1007/s00419-020-01754-8, Open Access.

2020

T. Kaiser, J. Lu, A. Menzel, P. Papadopoulos:
A Covariant Formulation of Finite Plasticity with Deformation-induced Evolution of Anisotropy: Modeling, Algorithmics, Simulation, and Comparison to Experiments
International Journal of Solids and Structures, 185-186, 116-142, 2020,
DOI: 10.1016/j.ijsolstr.2019.08.005.

2019

T. Kaiser, A. Menzel:
A dislocation density tensor-based crystal plasticity framework
Journal of the Mechanics and Physics of Solids, 131, 276-302, 2019,
DOI: 10.1016/j.jmps.2019.05.019.

T. Kaiser, A. Menzel:
An incompatibility tensor-based gradient plasticity formulation -- theory and numerics
Computer Methods in Applied Mechanics and Engineering, 345, 671-700, 2019,
DOI: 10.1016/j.cma.2018.11.013.

2017

T. Asmanoglo, A. Menzel:
A finite deformation continuum modelling framework for curvature effects in fibre-reinforced nanocomposites
Journal of the Mechanics and Physics of Solids, 107, 411-432, 2017,
DOI: 10.1016/j.jmps.2017.06.012.

T. Asmanoglo, A. Menzel:
Fibre-reinforced composites with fibre-bending stiffness under azimuthal shear – Comparison of simulation results with analytical solutions
International Journal of Non-Linear Mechanics, 91, 128-139, 2017,
DOI: 10.1016/j.ijnonlinmec.2017.01.001.

T. Asmanoglo, A. Menzel:
A multi-field finite element approach for the modelling of fibre-reinforced composites with fibre-bending stiffness
Computer Methods in Applied Mechanics and Engineering, 317, 1037-1067, 2017,
DOI: 10.1016/j.cma.2017.01.003.

2023

T. Kaiser, S. Forest, A. Menzel:
Computational modelling of stress gradient continua
Proceedings of the 7th ECCOMAS Young Investigators Conference, 2023,
DOI: 10.5281/zenodo.8393047.

D. Güzel, T. Kaiser, L. Lücker, N. Baak, F. Walther, A. Menzel:
Characterisation of damage by means of electrical measurements: Numerical predictions
Proc. Appl. Math. Mech, e202300013, 1-3, 2023,
DOI: 10.1002/pamm.202300013.

2021

C. Witt, T. Kaiser and A. Menzel:
On the incorporation of curvature effects into the isogeometric analysis of fibre-reinforced solids
Proc. Appl. Math. Mech, 21, 1-3, 2021,
DOI: 10.1002/pamm.202100185.

2019

T. Kaiser and A. Menzel:
Dislocation density tensors in gradient crystal plasticity
Proceedings of the 10th German-Greek-Polish Symposium on "Recent Advances in Mechanics",  17-18, 2019,
ISBN: 978-83-89333-74-2.

T. Kaiser and A. Menzel:
A framework and finite element formulation for incompatibility tensor-based gradient plasticity
Proc. Appl. Math. Mech, 19, 1-2, 2019,
DOI: 10.1002/pamm.201900041.

2018

T. Kaiser, J. Lu, A. Menzel, P. Papadopoulos:
On anisotropy evolution in finite strain plasticity
Proc. Appl. Math. Mech, 18, 1-2, 2018,
DOI: 10.1002/pamm.201800065.

2017

T. Asmanoglo, J. Lu, A. Menzel and P. Papadopoulos:
On the modelling of evolving material symmetries in finite strain plastic deformations
Proceedings of the 7th GACM Colloquium on Computational Mechanics, 773-776, 2017,
DOI: 10.18419/opus-9334.

T. Asmanoglo and A. Menzel:
On the modelling of curvature effects in fibre-reinforced nanocomposites
Proc. Appl. Math. Mech, 17, 387-388, 2017,
DOI: 10.1002/pamm.201710163.

2016

T. Asmanoglo and A. Menzel:
A coupled finite element approach for the modelling of composites with fibres possessing fibre-bending stiffness
Proc. Appl. Math. Mech, 16, 299-300, 2016
DOI: 10.1002/pamm.201610138.

2024

Wavelet-FFT-based computational multiscale modelling of complex material behaviour
8th International Conference on Material Modelling, London, United Kingdom, June 15-17, 2024

An introduction to wavelet-FFT-based computational multiscale approaches
Invited Talk (GAMM Student Research Group Duisburg-Essen),  University Duisburg-Essen, Germany, May 13, 2024

2023

Wavelet-FFT-based multiscale modelling of complex material behaviour
Habilitation Lecture, Institute of Mechanics, TU Dortmund University, Dezember 15, 2023

Frontiers in micromechanics
Habilitation Colloquium, Institute of Mechanics, TU Dortmund University, November 8, 2023

On the influence of microscale defects on electrical properties: Nanoscale experiments and multiscale simulations
10th GACM Colloquium on Computational Mechanics, Vienna, Austria, September 10-13, 2023

A wavelet-FFT approach for the efficient solution of unit cell problems
Invited Talk (Jun. Prof. J. Waimann), Institute of Applied Mechanics, RWTH Aachen, Germany, August 16, 2023 

On wavelet analysis and FFT-based spectral approaches in multiscale mechanics
Invited Talk (Prof. R. Jänicke), Institute of Applied Mechanics, TU Braunschweig, Germany, June 30, 2023 

Computational modelling of stress gradient continua
ECCOMAS 7th Young Investigators Conference, Porto, Portugal, June 19 -21, 2023

Modelling of mechanically-induced failure processes in electrically conducting interfaces
93rd GAMM Annual Meeting, Dresden, Germany, May 30 - June 02, 2023

A wavelet-enhanced FFT-based spectral approach for multiscale mechanics
Invited Talk (Prof. M. G. D. Geers), Mechanics of Materials Group, Eindhoven University of Technology, The Netherlands, April 20, 2023 

On Computational Multiscale Approaches, Material Interfaces and Wavelet-Based Solvers
Invited Talk (Prof. C. Kirchlechner), Institute for Applied Materials, Karlsruhe Institute of Technology, Karlsruhe, Germany, March 9, 2023

2022

Computational Modelling of Non-Simple and Anisotropic Materials
Invited Talk (GACM Best Ph.D. Award Plenary), 9th GACM Colloquium on Computational Mechanics, Essen, Germany, September 21-23, 2022

Continuum mechanics: An introduction to multiscale modelling of defects
TRR188 Seminar Series, Dortmund, Germany, August 30-31, 2022

Stress-gradient continua: On smaller-is-softer size effects and stress-free boundary layers
92nd GAMM Annual Meeting, Aachen, Germany, August 15-19, 2022

On the influence of microscale cracks on effective electrical properties
11th European Solid Mechanics Conference, Galway, Ireland, July 4-8, 2022

Capturing physics across scales – An introduction to computational multiscale methods
Invited Talk (Prof. T. Raasch), University of Siegen, Germany, May 19, 2022

Multiscale modelling of electrical conductors
18th European Mechanics of Materials Conference, Oxford, England, April 4-6, 2022

2021

Mehrskalige Modellierung zerstörungsfreier Schädigungsdetektion (Multiscale modelling of non-destructive damage detection)
CRC/Transregio 188, 10th General Assembly, Aachen, Germany, Mai 18-19, 2021

Fundamentals of electro-mechanically coupled computational multiscale formulations for electrical conductors
91th GAMM Annual Meeting, Kassel, Germany, March 15-19, 2021

2020

On nonlocality residuals, dislocation density tensors and crystal plasticity
Invited Talk (Prof. S. Forest), Mines ParisTech, Paris, France, February 21, 2020

2019

Bericht: Mehrskalige Modellierung zerstörungsfreier Schädigungsdetektion (Report: Multiscale modelling of non-destructive damage detection)
CRC/Transregio 188, 6th General Assembly, Dortmund, Germany, November 13-14, 2019

Modelling of non-destructive damage detection using electro-mechanically coupled multiscale formulations
Invited Talk, GAMM Junior Fall Meeting 2019, Hannover, Germany, October 07-09, 2019

Dislocation density tensors in gradient crystal plasticity
Invited Talk, 10th German-Greek-Polish Symposium on "Recent Advances in Mechanics", Bedlewo, Poland, September 15-18, 2019

Computational modelling of non-simple and anisotropic materials
Dissertation Defence Presentation, Institute of Mechanics, TU Dortmund University, July 25, 2019

A dislocation density tensor-based gradient plasticity framework
ICMM International Conference on Material Modelling, Lund, Sweden, June 26-28, 2019

Bericht: Mehrskalige Modellierung zerstörungsfreier Schädigungsdetektion (Report: Multiscale modelling of non-destructive damage detection)
CRC/Transregio 188, 5th General Assembly, Meschede, Germany, May 15-16, 2019

A framework and finite element formulation for incompatibility tensor-based gradient plasticity
90th GAMM Annual Meeting, Vienna, Austria, February 18-22, 2019

2018

Modelling and simulation of non-simple materials
Invited Talk, GAMM Junior Fall Meeting 2018, Essen, Germany, September 05-07, 2018

A structural tensor-based modelling approach to capture symmetry group evolution in anisotropic finite strain plasticity
6th European Conference on Computational Mechanics, Glasgow, UK, June 11-15, 2018

On anisotropy evolution in finite strain plasticity
89th GAMM Annual Meeting, Munich, Germany, March 19-23, 2018

2017

On the modelling of evolving material symmetries in finite strain plastic deformations
7th GACM Colloquium on Computational Mechanics, Stuttgart, Germany, October 11-13, 2017

On the modelling of curvature effects in fibre-reinforced nanocomposites
88th GAMM Annual Meeting, Weimar, Germany, March 6-10, 2017

2016

Finite element based simulation of fibre-reinforced composites with fibre-bending stiffness
15th European Mechanics of Materials Conference, Brussels, Belgium, September 7-10, 2016

A coupled finite element approach for the modelling of composites with fibres possessing fibre-bending stiffness
Joint Annual Meeting of GAMM and DMV, Braunschweig, Germany, March 7-11, 2016

2015

Constitutive Modeling of Evolving Anisotropies in Finite Plasticity
12th Seminar of Graduate School SiMiDe, Dortmund, Germany, 2015

2023

L. Lücker, D. Güzel, T. Kaiser, A. Menzel, F. Walther:
Measurement-based assessment and prediction of the interaction between ductile and cyclic damage on a macroscopic level
4. Industrial Colloquium of the CRC/Transregio 188, Aachen, Germany, November 15, 2023

L. Sobisch, J. Gerlach, T. Kaiser, T. Clausmeyer:
Scientific Service Project - Model integration
4. Industrial Colloquium of the CRC/Transregio 188, Aachen, Germany, November 15, 2023

C. Witt, T. Kaiser, A. Menzel:
Modelling of flexoelectricity-induced osteocyte apoptosis and targeted bone remodelling
Invited Poster Session, 93rd GAMM Annual Meeting, Dresden, Germany, May 30-June 02, 2023

2022

C. Witt, T. Kaiser, A. Menzel:
Numerical simulation of flexoelectricity-induced remodelling processes in cracked bone samples
Invited Poster Session, 92nd GAMM Annual Meeting, Aachen, Germany, August 15-19, 2022

L. Lücker, D. Güzel, T. Kaiser, A. Menzel, F. Walther:
Measurement-based characterization and prediction of ductile and cyclic damage interaction at the macroscale
3. Industrial Colloquium of the CRC/Transregio 188, Dortmund, Germany, May 10, 2022

R. Schulte, J. Gerlach, R. Ostwald, T. Kaiser, T. Clausmeyer, A. Menzel, A. E. Tekkaya:
Scientific Service Project - Model integration
3. Industrial Colloquium of the CRC/Transregio 188, Dortmund, Germany, May 10, 2022

2021

C. Witt, T. Kaiser, A. Menzel:
On the application of a globally C1-continuous isogeometric finite element approach to gradient elasticity problems
International Conference on Isogeometric Analysis, Lyon, France, September 27-29, 2021

T. Kaiser, A. Menzel:
Dislocation density tensors in finite plasticity
Invited Poster Session, 91th GAMM Annual Meeting, Kassel, Germany, March 15-19, 2021

2020

R. Schulte, R. Ostwald, T. Kaiser, A. Menzel:
Machine learning for parameter identification and model reduction of gradient-enhanced damage models for metal forming processes
GAMM Juniors' Summer School on Applied Mathematics and Mechanics ("Learning Models from Data: Model Reduction, System Identification and Machine Learning")
Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, July 27-31, 2020

L. Lücker, T. Kaiser, A. Menzel, F. Walther
Damage interaction on the macroscale - Experimental characterization and multiscale modeling
CRC/Transregio 188, 2nd Industrial Colloquium, Aachen, Germany, March 05, 2020

2019

T. Kaiser, J. Lu, A. Menzel, P. Papadopoulos:
On symmetry group evolution in finite plasticity
Invited Poster Session, 90th GAMM Annual Meeting, Vienna, Austria, February 18-22, 2019

2018

T. Kaiser, A. Menzel:
Nano-composites with size effects -- Fibre-bending stiffness and FE-formulation
Invited Poster Session, 89th GAMM Annual Meeting, Munich, Germany, March 19-23, 2018

2015

T. Asmanoglo, P. Papadopoulos, J. Lu, A. Menzel, B. Kiefer:
Constitutive Modeling of Evolving Anisotropies in Finite Plasticity
3rd Spring School on Simulation-Based Microstructure Design (SiMiDe), Akademie Klausenhof, Hamminkeln, 2015