Richard Ostwald
Dr.-Ing. Richard Ostwald
Curriculum Vitae
Professional experience
| since 08/2023 | Tenured Full Professor of Solid Mechanics, Helmut Schmidt University Hamburg |
| 03/2022–07/2023 | Senior Researcher, Institute of Structural Analysis, Department of Civil Engineering, University of Duisburg-Essen Prof. Carolin Birk |
| 04/2020–09/2020 | Adjunct Professor, Faculty of Production Engineering, University of Bremen |
| 05/2018–03/2020 | Interim Professor of Mechanics, Bremen Institute of Mechanical Engineering, Faculty of Production Engineering, University of Bremen |
| 02/2017–04/2017 | Visiting Researcher, Department of Mechanical Engineering, Stanford University, CA, USA Prof. Ellen Kuhl |
| 07/2015–02/2022 | Senior Researcher, Institute of Mechanics, TU Dortmund University Prof. Andreas Menzel |
| 02/2013 | Visiting Researcher, Department of Mechanical Engineering, University of Zaragoza, Spain Prof. Miguel Ángel Martínez Barca |
| 07/2009–06/2015 | Research Assistant, Institute of Mechanics, TU Dortmund University Prof. Andreas Menzel |
| 10/2008–06/2009 | Student Intern, Siemens AG, Mülheim/Ruhr Turbines and Generators Factory, Mechanical Calculations Department |
| 04/2005–09/2008 | Student Assistant, Chair of Mechanics, TU Dortmund University Prof. Bob Svendsen |
Academic Self-Administration
| 10/2020–02/2022 | Elected Member of the Structural Commission, Faculty of Mechanical Engineering, TU Dortmund University |
| 10/2020–02/2022 | Elected Deputy Member of the Doctoral Examination Board, Faculty of Mechanical Engineering, TU Dortmund University |
| 03/2019–03/2020 | Member of the Curriculum Development Commission, Faculty of Production Engineering, University of Bremen |
| 03/2016–04/2018 | Elected Speaker of the Scientific Staff, Faculty of Mechanical Engineering, TU Dortmund University |
| 01/2006–06/2008 | Elected Student Representative in the Mechanical Engineering Faculty Council, TU Dortmund University |
Education
| 05/2015 | Doctoral Degree (Dr.-Ing.), Thesis Title: "Modelling and simulation of phase-transformations in elasto-plastic polycrystals" |
| 06/2009 | Diploma Degree (Dipl.-Ing.), Thesis Title: "Fatigue assessment of welded steel structures based on harmonic analyses" |
| 10/2004–09/2008 | Studies of Mechanical Engineering, TU Dortmund University Emphases: Fluid Flow Engines, Propulsion Technology, Simulation Technology |
Awards
| 07/2017 | Selection for the Global Young Faculty Program, Mercator Research Center Ruhr |
| 11/2016 | Rudolf Chaudoire Award, TU Dortmund University |
| 05/2016 | GACM Best Ph.D. Award 2015, German Association for Computational Mechanics |
| 12/2015 | Best Thesis Award (Dissertationspreis), TU Dortmund University |
| 09/2015 | Jan Szmelter Award for the best research paper, Polish Association for Computational Mechanics |
| 03/2010 | Hans Uhde Award for exceptional study achievements, ThyssenKrupp/Uhde GmbH |
Teaching
Teaching experience (alphabetical)
| Analysis of Structures (Lecture+Tutorial) | UDE | SS 2022, WS22/23, SS 2023 |
| Computer Languages for Engineers (Lecture+Tutorial) | UDE | SS 2022, WS22/23, SS 2023 |
| Engineering Mechanics 1 for Industrial Engineering (Lecture) | U Bremen | WS 18/19, WS 19/20 |
| Engineering Mechanics 2 for Industrial Engineering (Lecture) | U Bremen | SS 2018, SS 2019 |
| Engineering Mechanics I (Lecture) | TU Dortmund | SS 2021 |
| Engineering Mechanics II (Lecture) | TU Dortmund | WS 21/22 |
| Finite Element Methods I (Lecture) | TU Dortmund | WS 16/17, WS 17/18 |
| Finite Element Methods II (Lecture) | TU Dortmund | SS 2017 |
| Finite Inelasticity (Tutorial) | TU Dortmund | SS 2011 |
| Higher Strength Theory and Structural Mechanics (Lecture) | U Bremen | WS 18/19, WS 19/20 |
| Higher Strength Theory II – Plasticity Theory (Lecture) | U Bremen | WS 18/19, WS 19/20 |
| Introduction to Numerical Methods (Tutorial) | TU Dortmund | WS 09/10, WS 10/11, WS 11/12, WS 12/13, WS 14/15 |
| Introduction to Numerical Methods (Lecture) | TU Dortmund | WS 15/16, WS 21/22 |
| Mechanics 1a for Production Engineering (Lecture) | U Bremen | WS 18/19, WS 19/20 |
| Mechanics 1b for Production Engineering (Lecture) | U Bremen | SS 2018, SS 2019, SS 2020 |
| Mechanics II for Mechanical Engineering (Lecture) | TU Dortmund | SS 2020, SS 2021 |
| Mechanics III for Mechanical Engineering (Tutorial) | TU Dortmund | SS 2007, SS 2008 |
| Nonlinear Finite Element Methods (Lecture) | TU Dortmund | WS 20/21 |
| Nonlinear Optimization in Simulation Technology (Lecture) | U Bremen | SS 2018 |
| Nonlinear Optimization in Simulation Technology (Tutorial) | U Bremen | SS 2018 |
| Parameter Identification (Tutorial) | TU Dortmund | SS 2012, SS 2013 |
| Tensor Calculus (Tutorial) | TU Dortmund | SS 2015 |
| Theory of Materials (Lecture) | TU Dortmund | SS 2016, SS 2017 |
Research
- Projects
- since 01/2021: SFB-Transregio 188 (Collaborative Research Centre by the German Science Foundation), Senior Research Associate, TP S01: Model integration for process simulations
- 01/2017 – 12/2020: SFB-Transregio 188 (Collaborative Research Centre by the German Science Foundation), Principal Investigator, TP S01: Model integration for process simulations
- 07/2009 – 06/2015: SFB-Transregio 30 (Collaborative Research Centre by the German Science Foundation), TP B6: Modelling and simulation of thermo-mechanically induced phase transformations in steels
- Research Interests
- Material modelling: thermodynamically consistent modelling of phenomena such as damage, plasticity, solid state phase transformations and temperature evolution in materials of technological interest within the geometrically nonlinear framework of generalised standard materials and beyond, including the embedding in FEA software
- Multi-scale modeling/homogenisation: development of numerical frameworks for the microstructure simulation and homogenisation of high-resolution material models in the transition from nano/micro to meso/macro scale, e.g. by utilisation of the microsphere/microplane approach for the multi-scale modeling of anisotropic solids
- Multi-field/coupled problems: formulation and efficient, monolithic numerical solution of multi-field problems, e.g. in the context of full thermomechanical coupling, gradient-enhanced damage formulations, or formally related problems
- Inverse problems/optimisation: adaptation of methods of non-linear programming, including methods of different order in connection with active set and penalty strategies for constrained optimisation with application e.g. in the context of DIC-based parameter identification
- Machine learning: adaptation of machine learning methods, specifically artificial neural networks, i.e. feedforward ANNs such as multilayer perceptrons and recurrent ANNs like LSTM, to problems in engineering mechanics, especially in the area of inverse problems
- Conference Organization
- Co-Organiser and Conference Chair, 9th GACM Colloquium on Computational Mechanics, University of Duisburg-Essen, September 2022
- Session Chair, Forschungskolloquium Baustatik-Baupraxis, RWTH Aachen/Kloster Steinfeld, September 2022
- Co-Organiser of the 3rd Industrial Colloquium of the CRC/Transregio 188, Westfalenhallen Dortmund, May 2022
- Organiser and Chair, 143rd Northern German Mechanics Colloquium, University of Bremen, February 2019
- Chair of session Crystal Mechanics: 7th GACM Colloquium on Computational Mechanics, University of Stuttgart, October 2017
- Chair of session Computational Materials Science: 3rd ECCOMAS Young Investigators Conference / 6th German Association for Computational Mechanics Colloquium (YIC/GACM), RWTH Aachen University, July 2015
- Further Activities
- Managing editor of GAMM-Mitteilungen – Surveys of the International Association of Applied Mathematics and Mechanics (since 01/2017)
- Guest editor of the German Association for Computational Mechanics GACM Report No. 11 (summer 2019)
- Reviewer for the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS) Best Student Paper Competition (2015, 2016, 2017)
- Reviewer for the Global Conference on Materials Science and Engineering CMSE (2018) and International Conference on Material Forming ESAFORM (2020)
- Reviewer for Journal of the Mechanics and Physics of Solids (Elsevier), Mechanics of Materials (Elsevier), Journal of Manufacturing Processes (Elsevier), Production Engineering – Research and Development (Springer), Recent Patents and Topics on Imaging (Bentham Science), Materials Science and Engineering (IOP Conf. Series), and Procedia Manufacturing (Elsevier)
- Memberships
- German Association for Computational Mechanics (GACM)
- European Community on Computational Methods in Applied Sciences (ECCOMAS)
- International Association for Computational Mechanics (IACM)
- International Association of Applied Mathematics and Mechanics (GAMM)
- Materials Chain – Key Research Initiative of the University Alliance Ruhr
- German Association of University Professors and Lecturers (DHV)
Publications
Theses
2015
- R. Ostwald
Modelling and simulation of phase-transformations in elasto-plastic polycrystals,
Dissertation, Institute of Mechanics, TU Dortmund, 2015
2009
- R. Ostwald
Fatigue assessment of welded steel structures based on harmonic analyses,
Diploma Thesis, Siemens AG, 2009
Journals
2022
- R. Schulte, C. Karca, R. Ostwald, A. Menzel
Machine learning-assisted parameter identification for constitutive models based on concatenated loading path sequences,
European Journal of Mechanics / A Solids, 104854, pp. 1–26, doi: 10.1016/j.euromechsol.2022.104854, 2022
2021
- A. Schowtjak, R. Schulte, T. Clausmeyer, R. Ostwald, A. E. Tekkaya, A. Menzel
ADAPT – A Diversely Applicable Parameter Identification Tool: Overview and Full-Field Application Examples,
International Journal of Mechanical Sciences, 213:106840 pp. 1–17 (DOI: 10.1016/j.ijmecsci.2021.106840), 2021
2020
- R. Schulte, R. Ostwald, A. Menzel
Gradient-enhanced modelling of damage for rate-dependent material behaviour – a parameter identification framework,
Materials, 13(14):3156 pp. 1–20 (DOI: 10.3390/ma13143156), 2020
- T. Clausmeyer, A. Schowtjak, S. Wang, R. Gitschel, O. Hering, P. Pavliuchenko, J. Lohmar, R. Ostwald, G. Hirt, A. E. Tekkaya
Prediction of Ductile Damage in the Process Chain of Caliber Rolling and Forward Rod Extrusion,
Procedia Manufacturing, 47:649–655 (DOI: 10.1016/j.promfg.2020.04.201), 2020
- K. Langenfeld, A. Schowtjak, R. Schulte, O. Hering, K. Möhring, T. Clausmeyer, R. Ostwald, F. Walther, A. E. Tekkaya, J. Mosler
Influence of anisotropic damage evolution on cold forging,
Production Engineering, 14:115–121 (DOI: 10.1007/s11740-019-00942-y), 2020
- A. Schowtjak, S. Wang, O. Hering, T. Clausmeyer, J. Lohmar, R. Schulte, R. Ostwald, G. Hirt, A. E. Tekkaya
Prediction and analysis of damage evolution during caliber rolling and subsequent cold forward extrusion,
Production Engineering, 14:33–41 (DOI: 10.1007/s11740-019-00935-x), 2020
2019
- R. Ostwald, E. Kuhl, A. Menzel
On the implementation of finite deformation gradient-enhanced damage models,
Computational Mechanics, 64(3):847–877 (DOI: 10.1007/s00466-019-01684-5), 2019
2018
- R. Ostwald, T. Bartel, A. Menzel
A finite strain continuum framework for the simulation of phase transformations based on representative transformation orientations,
accepted for publication, 2018
2016
- R. Ostwald, T. Bartel, A. Menzel
A thermodynamically consistent finite strain micro-sphere framework for phase-transformations,
Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Full Paper), pp. 2110–2122 (DOI: 10.7712/100016.1945.10899), 2016
2015
- R. Ostwald, T. Bartel, A. Menzel
An energy-barrier-based computational micro-sphere model for phase-transformations interacting with plasticity,
Comput. Methods Appl. Mech. Engrg., 293:232–265 (DOI: 10.1016/j.cma.2015.04.008), 2015
2014
- R. Ostwald, T. Bartel, A. Menzel
A Gibbs-energy-barrier-based computational micro-sphere model for the simulation of martensitic phase-transformations,
Int. J. Numer. Meth. Engng., 97:851–877 (DOI: 10.1002/nme.4601), 2014
- R. Ostwald, M. Tiffe, T. Bartel, A. Zabel, A. Menzel, D. Biermann
Towards the multi-scale simulation of martensitic phase-transformations: an efficient post-processing approach applied to turning processes,
Journal of Materials Processing Technology, 214(8):1516–1523 (DOI: 10.1016/j.jmatprotec.2014.02.022), 2014
2013
- A. Menzel, T. Bartel, R. Ostwald
Modelling and Simulation of Thermo-Mechanically Induced Phase-Transformations in Steel,
In: Functionally Graded Materials in Industrial Mass Production, Volume 2, ISBN 978-3-942267-91-5, pp. 215–232, 2013
- T. Bartel, A. Bartels, U. Ehlenbröker, R. Mahnken, A. Menzel, J. Mosler, R. Ostwald, A. Schneidt, M. Wolff
Modeling and Simulation of Solid Materials,
In: Functionally Graded Materials in Industrial Mass Production – Fundamentals, ISBN 978-3-942267-92-2, pp. 113–128, 2013
2012
- R. Ostwald, T. Bartel, A. Menzel
Phase-transformations interacting with plasticity – a micro-sphere model applied to TRIP steel,
Computational Materials Science, 64:12–16 (DOI: 10.1016/j.commatsci.2012.05.015), 2012
2011
- R. Ostwald, T. Bartel, A. Menzel
A one-dimensional computational model for the interaction of phase-transformations and plasticity,
Int. J. of Structural Changes in Solids, 3(1):63–82, 2011
- D. Biermann, A. Menzel, T. Bartel, F. Höhne, R. Holtermann, R. Ostwald, B. Sieben, M. Tiffe, A. Zabel
Experimental and computational investigation of machining processes for functionally graded materials,
Procedia Engineering, 19:22–27 (DOI: 10.1016/j.proeng.2011.11.074), 2011
2010
- R. Ostwald, T. Bartel, A. Menzel
A computational micro-sphere model applied to the simulation of phase-transformations,
J. Appl. Math. Mech., 90(7-8):605–622 (DOI: 10.1002/zamm.200900390), 2010
2009
- A. Menzel, T. Bartel, R. Ostwald
A crystallography-based model on the interaction of martensitic phase-transformations with plasticity,
In: Functionally Graded Materials in Industrial Mass Production, ISBN 978-3-937524-91-7, pp. 251–266, 2009
- J. Unger, R. Ostwald, B. Svendsen
Thermodynamic multifield modeling of electromagnetic metal forming,
International Journal of Material Forming, 2:907–910 (DOI: 10.1007/s12289-009-0486-9), 2009
Proceedings
2021
- R. Schulte, R. Ostwald, A. Menzel
A computational framework for gradient-enhanced damage – implementation and applications
Proc. Appl. Math. Mech., 20(1):e202000215 pp. 1–3 (DOI: 10.1002/pamm.202000215), 2021
2017
- R. Ostwald, T. Bartel, A. Menzel
Modeling and simulation of phase transformations in polycrystals – a micro-sphere framework
Proceedings of the 7th GACM Colloquium on Computational Mechanics, pp. 6–9 (DOI: 10.18419/opus-9334), 2017
2016
- R. Ostwald, T. Bartel, A. Menzel
Extending a finite strain hyperelastic micro-sphere framework towards phase transformations
Proc. Appl. Math. Mech., 16(1):381–382 (DOI: 10.1002/pamm.201610179), 2016
2015
- R. Ostwald, T. Bartel, A. Menzel
A framework for the simulation of phase-transforming elasto-plastic SMA and TRIP steel polycrystals
Proceedings of the 3rd Polish Congress of Mechanics/21st International Conference on Computer Methods in Mechanics (PCM/CMM), pp. 803–804 (ISBN: 978-83-932107-4-9), 2015
2012
- R. Ostwald, T. Bartel, A. Menzel
A multi-scale model for the interaction of phase-transformations and plasticity in polycrystalline solids
Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS), 2012
- R. Ostwald, T. Bartel, A. Menzel
Simulation of phase-transformations based on numerical minimization of intersecting Gibbs energy potentials
Proc. Appl. Math. Mech., 12(1):277–278 (DOI: 10.1002/pamm.201210129), 2012
- R. Ostwald, T. Bartel, A. Menzel, M. Tiffe, D. Biermann, M. Lebsanft, B. Scholtes
Modelling and Simulation of Phase-Transformations and Plasticity in Steel
Proceedings of the 1st International Conference on Thermo-Mechanically Graded Materials, pp. 109–114 (ISBN: 978-3-942267-58-8), 2012
2011
- R. Ostwald, T. Bartel, A. Menzel
Interaction of phase-transformations and plasticity – a multi-phase micro-sphere approach
Proc. Appl. Math. Mech., 11(1):417–418 (DOI: 10.1002/pamm.201110200), 2011
2010
- R. Ostwald, T. Bartel, A. Menzel
A micro-sphere approach applied to the modelling of phase-transformations
Proc. Appl. Math. Mech., 10(1):315–316 (DOI: 10.1002/pamm.201010150), 2010
- R. Ostwald, T. Bartel, A. Menzel
A micro-sphere approach applied to the simulation of phase transformations interacting with plasticity
Proceedings of the 23rd Nordic Seminar on Computational Mechanics (NSCM-23), pp. 157–160 (ISRN: KTH/MEK/TR--10/07--SE), 2010
Talks
2022
- A hybrid parameter identification scheme for constitutive models based on neural networks and nonlinear optimisation
92nd GAMM Annual Meeting, RWTH Aachen University, 2022
2021
- Schädigungsmodellierung und -simulation – vom Mikromodell zur Bauteil-Leistungsfähigkeit
3. Sitzung des Industriekreises des SFB/TRR 188, Meschede (online), 2021
- A gradient-enhanced damage modelling framework for metal forming simulations – application and calibration
European Structural Integrity Society (ESIS) Technical Meeting on Numerical Methods (TC8), University of Belgrade, Serbia (online), 2021
2020
- Zur mikromechanisch motivierten Modellierung und Simulation komplexer CMC-Bauteile
CU-Thementag Ceramic Composites / Arbeitskreis Verstärkung keramischer Werkstoffe (DKG/DGM), Augsburg (online), 2020
- Aspects of implementation of regularised continuum damage for complex FE analyses
European Structural Integrity Society (ESIS) Technical Meeting on Numerical Methods (TC8), University of Munich UniBwM, Neubiberg, Germany, 2020
2019
- Kombination von regularisierter duktiler Schädigung und Plastizität für die Simulation von Umformprozessen
143rd Northern German Mechanics Colloquium (143. Norddeutsches Mechanik-Kolloquium), University of Bremen, Germany, 2019
2018
- Towards the simulation of complex metal forming processes: combination of regularised damage and contact
Vierte Sitzung der Arbeitsgruppe Simulation des Arbeitskreises Bruchmechanik und Bauteilsicherheit des Deutschen Verbandes für Materialforschung und -prüfung e.V. (DVM), Institute of Forming Technology and Lightweight Components (IUL), TU Dortmund, Germany, 2018
- A computational framework for the simulation of regularised damage
Materials Science and Engineering (MSE) Congress, Darmstadt University of Technology, Germany, 2018
- Implementation of a gradient-enhanced damage model – a heat equation-based framework
6th European Conference on Computational Mechanics (Solids, Structures and Coupled Problems) – ECCM 6, Glasgow, Scotland, UK, 2018
2017
- Modelling and Simulation of phase transformations in elasto-plastic polycrystals
Invited Plenary Talk, 7th GACM Colloquium on Computational Mechanics, University of Stuttgart, Germany, 2017
- A regularised damage formulation for the application in commercial finite element codes
Invited Talk, E. Kuhl Seminar, Stanford University, CA, USA, Apr 2017
- Modelling and computation of deformation-induced anisotropy in metal alloys
Invited Talk, E. Kuhl Seminar, Stanford University, CA, USA, Feb 2017
2016
- Modellierung und Simulation anisotroper Festkörper
Invited Talk, Rudolf Chaudoire Pavillon, TU Dortmund University, Germany, 2016
- A thermodynamically consistent finite strain micro-sphere framework for phase-transformations
7th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), Crete Island, Greece, 2016
- Extending a finite strain hyperelastic micro-sphere framework towards phase transformations
Joint Annual Meeting of GAMM and DMV, TU Braunschweig, Germany, 2016
2015
- Modelling and Simulation of temperature-dependent phase-transformations in elasto-plastic SMA polycrystals
3rd Spring School on Simulation-Based Microstructure Design (SiMiDe), Hamminkeln, Germany, 2015
- A micro-mechanically motivated finite deformation thermo-elastoplastic framework for martensitic phase-transformations
3rd ECCOMAS Young Investigators Conference / 6th German Association for Computational Mechanics Colloquium (YIC/GACM), Aachen, Germany, 2015
- Modellierung und Simulation thermo-mechanisch induzierter Phasentransformationen in Stahlwerkstoffen
SFB/Transregio 30 Abschlusskolloquium, Gießhaus, University of Kassel, Germany, 2015
- A framework for the simulation of phase-transforming elasto-plastic SMA and TRIP steel polycrystals
3rd Polish Congress of Mechanics/21st International Conference on Computer Methods in Mechanics (PCM/CMM), Gdansk, Poland, 2015
2014
- A finite deformation framework for phase-transformations interacting with plasticity and its robust numerical solution
IWCMM24 – XXIV International Workshop on Computational Micromechanics of Materials, IMDEA Materials Institute, Madrid, Spain, 2014
2013
- Simulation of temperature-dependent phase-transformations and plasticity in polycrystalline metals based on Gibbs energy barriers
Invited Talk, University of Zaragoza, Spain, 2013
- A micromechanically motivated material model for polycrystalline SMA
International Workshop on New Trends in Solid Mechanics: Coupled Fields and Multi-scale Modelling, Castro Urdiales, Spain, 2013
- Simulation of plasticity and martensitic phase-transformations based on representative transformation directions
XII International Conference on Computational Plasticity (COMPLAS XII), Barcelona, Spain, 2013
- Efficient Assessment of In-Process Phase-Transformations – Application to Machining Processes
6. Forum Metallplastizität / 26. Workshop Composite Forschung in der Mechanik, Liborianum Paderborn, Germany, 2013
2012
- Experimental and computational investigation of machining processes for functionally graded materials
1st CIRP Conference on Surface Integrity (CSI), Bremen, Germany, 2012
- Simulation of phase-transformations based on numerical minimization of intersecting Gibbs energy potentials
83rd GAMM Annual Meeting, Darmstadt University of Technology, Germany, 2012
- Modelling and Simulation of phase-transformations in polycrystalline materials with application to machining processes
19. Sitzung der TRR30 AG Eigenschaftscharakterisierung, Institut für spanende Fertigung (ISF), TU Dortmund, Germany, 2012
- A multi-scale model for the interaction of phase-transformations and plasticity in polycrystalline solids
6th European Congress on Computational Methods in applied Sciences and Engineering (ECCOMAS Congress 2012), University of Vienna, Austria, 2012
- Zerspanung von gradierten Flanschwellen
2. Sitzung des Industriebeirates des SFB/Transregio 30, Lehrstuhl für Werkstofftechnik (LWT), TU Dortmund, Germany, 2012
- Modelling and Simulation of Phase-Transformations and Plasticity in Steel
1st International Conference on Thermo-Mechanically Graded Materials, Kongress Palais Kassel, Germany, 2012
2011
- A multi-phase micro-sphere-based model for phase-transformations interacting with plastic deformations
10th GAMM-Seminar on Microstructures, Darmstadt University of Technology, Germany, 2011
- Interaction of phase-transformations and plasticity – a multi-phase micro-sphere approach
82nd GAMM Annual Meeting, Grazer Congress, Graz, Austria, 2011
- Computational modelling of phase-transformations interacting with plasticity – combination of a Gibbs-energy-barrier-based transformation criterion with a plastic inheritance approach
21st International Workshop on Computational Mechanics of Materials, University of Limerick, Ireland, 2011
- Mikromechanisch motivierte Modellierung und Simulation der temperaturabhängigen Interaktionen zwischen Phasentransformationen und Plastizität
5. Forum Metallplastizität / 24. Workshop Composite Forschung in der Mechanik, Liborianum Paderborn, Germany, 2011
2010
- A micro-sphere approach applied to the modelling of phase-transformations
81st GAMM Annual Meeting, KIT Karlsruhe Institute of Technology, Karlsruhe, Germany, 2010
- Zur Modellierung und Simulation thermomechanisch induzierter Phasentransformationen in Stahlwerkstoffen
1st TRR30 Workshop on Modeling and Simulation, TU Dortmund, Germany, 2010
- A micro-sphere approach applied to the simulation of phase transformations interacting with plasticity
23rd Nordic Seminar on Computational Mechanics (NSCM-23), KTH Royal Institute of Technology, Stockholm, Sweden, 2010
2009
- Fatigue assessment of welded steel structures based on harmonic analyses
Siemens AG, Mülheim/Ruhr, Germany, 2009
2008
- Modeling and simulation of electromagnetic forming processes: a combination of ANSYS and FEAP
Institute of Mechanics, TU Dortmund, Germany, 2008
2007
- Development of finite element program modules for the simulation of electromagnetic forming
Institute of Mechanics, TU Dortmund, Germany, 2007
Poster
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, 2020
- A. Schowtjak, R. Schulte, T. Clausmeyer, R. Ostwald
Model integration for process simulations,
2nd SFB/Transregio 188 Industrial Colloquium, RWTH Aachen University, 2020
2018
- R. Ostwald, L. Sprave, R. Schulte, A. Menzel
A gradient-enhanced damage implementation for the simulation of damage in metal forming processes,
2nd Materials Chain International Conference (MCIC), Ruhr University Bochum, 2018
- A. Schowtjak, T. Clausmeyer, R. Ostwald
Modellintegration für die Prozesssimulation,
SFB/Transregio 188 Industriekolloquium, Congress Center Westfalenhallen Dortmund, 2018
- R. Ostwald, E. Kuhl, A. Menzel
A computational framework for the simulation of regularised damage,
Materials Science and Engineering (MSE) Congress, Darmstadt University of Technology, 2018
2016
- T. Clausmeyer, R. Ostwald
Wissenschaftliches Serviceprojekt: Modellintegration für die Prozesssimulation – Zielsetzung,
SFB/Transregio 188 Project Application, Institute of Forming Technology and Lightweight Components (IUL), TU Dortmund University, 2016
- T. Clausmeyer, R. Ostwald
Wissenschaftliches Serviceprojekt: Modellintegration für die Prozesssimulation – Arbeitsplan,
SFB/Transregio 188 Project Application, Institute of Forming Technology and Lightweight Components (IUL), TU Dortmund University, 2016
- T. Clausmeyer, R. Ostwald
Wissenschaftliches Serviceprojekt: Modellintegration für die Prozesssimulation – Vorarbeiten,
SFB/Transregio 188 Project Application, Institute of Forming Technology and Lightweight Components (IUL), TU Dortmund University, 2016
2015
- R. Ostwald, T. Bartel., A. Menzel
Modelling and simulation of phase-transformations in elasto-plastic SMA and TRIP steel polycrystals,
3rd Spring School on Simulation-Based Microstructure Design (SiMiDe), Akademie Klausenhof, Hamminkeln, 2015
- R. Ostwald, T. Bartel, B. Kiefer, A. Menzel
Modelling and Simulation,
Materials Chain Kick-off meeting, Ruhr University Bochum, 2015
2014
- R. Ostwald, T. Bartel, A. Menzel
Modellierung und Simulation thermo-mechanisch induzierter Phasentransformationen in Stahlwerkstoffen – Antragsposter,
SFB/Transregio 30, 2nd Interim Evaluation, Paderborn University, 2014
- R. Ostwald, T. Bartel, A. Menzel
Modellierung und Simulation thermo-mechanisch induzierter Phasentransformationen in Stahlwerkstoffen – Berichtsposter,
SFB/Transregio 30, 2nd Interim Evaluation, Paderborn University, 2014
2012
- R. Ostwald, T. Bartel, A. Menzel, M. Tiffe, D. Biermann, M. Lebsanft, B. Scholtes
Modelling and simulation of the interactions between phase-transformations and plasticity in steel,
11th GAMM-Seminar on Microstructures, Essen, SFB/Transregio 30 Cluster Poster – Research Projects A3/B6/D2, 2012
- D. Biermann, A. Menzel, T. Bartel, F. Höhne, R. Holtermann, R. Ostwald, B. Sieben, M. Tiffe, A. Zabel
Experimental and computational investigation of machining processes for functionally graded materials,
1st CIRP Conference on Surface Integrity (CSI), Bremen, SFB/Transregio 30 Cooperation Poster – Research Projects A3/B6, 2012
2010
- R. Ostwald, T. Bartel, A. Menzel
Modellierung und Simulation thermo-mechanisch induzierter Phasentransformationen in Stahlwerkstoffen (I),
SFB/Transregio 30, 1st Interim Evaluation, Institute of Machining Technology (ISF), TU Dortmund, 2010
- R. Ostwald, T. Bartel, A. Menzel
Modellierung und Simulation thermo-mechanisch induzierter Phasentransformationen in Stahlwerkstoffen (II),
SFB/Transregio 30, 1st Interim Evaluation, Institute of Machining Technology (ISF), TU Dortmund, 2010