Professorship for materials mechanics

Organisational unit: Professoship

Organisation profile

The professorship for materials mechanics with a focus on process simulation is a shared professorship carried out in cooperation with the Helmholtz-Zentrum hereon GmbH. In particular, this is concerned with the digital modelling of technological production processes and materials, whereby considerable focus is placed on local modification processes, solid state joining processes and forming processes. The modelling approaches which are used for these range from micromechanics (e.g. crystal plasticity and phase field simulations), to continuum mechanics for describing material behaviour, to approaches for complex process simulations.

Main research areas

At the same time, one of the main focuses of the activities carried out by the professorship at the Leuphana is the development and application of mathematical models (material models) for describing microstructure development and the deformation behaviour of various metallic materials across multiple length scales. These developments often take place in close conjunction with the experimental work being carried out at the hereon. The length scale and timescale on which the relevant processes in the material take place or on which these are modelled depends on the material, the process and the component. Over the past few years, the work group has built up a vast wealth of experience when it comes to modelling many material systems such as these. In addition to carrying out intense studies on deformation processes in metallic materials, the work group has also dealt with additional material systems such as metallic glasses and polymers.

At the Helmholtz-Zentrum hereon, the professorship deals specifically with the experimental study and process modelling of solid state joining processes and manufacturing processes which act on a local level. Some named examples of these are joining processes such as friction stir welding and laser welding, as well as additive manufacturing processes such as friction welding and laser deposition welding. This is accompanied by local modification processes for the targeted adjustment of residual stresses (residual stress engineering), such as laser shock peening and hammer peening. One of the fundamental goals of these research activities is to investigate the entire system of process, microstructure and property through a combination of experimental and simulation-based approaches in order to achieve an improved physical understanding thereof. By adapting the process parameters in a targeted manner, the insights gained can be used to optimise material or structural behaviour, e.g. with regard to deformation and failure behaviour.

The professorship plays an active role in various national and international organisations such as the GAMM (International Association of Applied Mathematics and Mechanics) or the ZHM (Centre for Advanced Materials).

Key teaching focuses are in the fields of applied mechanics and material modelling, as well as in the provision of additional engineering basics.

  1. Published

    Laser shock peening process modelling and experimental validation of AA2198-T3 and AA2198-T8

    Keller, S., Kashaev, N. & Klusemann, B., 2017, In: Proceedings in applied mathematics and mechanics. 17, 1, p. 423 - 424 2 p.

    Research output: Journal contributionsConference article in journalResearchpeer-review

  2. Published

    Fatigue Life Extension of AA2024 Specimens and Integral Structures by Laser Shock Peening

    Kashaev, N., Chupakhin, S., Ventzke, V., Horstmann, M., Riekehr, S., Barbini, A., dos Santos, J., Keller, S., Klusemann, B. & Huber, N., 25.05.2018, MATEC Web of Conferences: 12th International Fatigue Congress (FATIGUE 2018) . G, H. (ed.). EDP Sciences, Vol. 165. 6 p. 18001. (MATEC Web of Conferences; vol. 165).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  3. Published

    Microstructure and hardness evolution of laser metal deposited AA5087 wall-structures

    Frönd, M., Ventzke, V., Riekehr, S., Kashaev, N., Klusemann, B. & Enz, J., 03.09.2018, In: Procedia CIRP. 74, p. 131-135 5 p.

    Research output: Journal contributionsConference article in journalResearchpeer-review

  4. Published

    Experimental investigation of temperature distribution during wire-based laser metal deposition of the Al-Mg alloy 5087

    Frönd, M., Bock, F. E., Riekehr, S., Kashaev, N., Klusemann, B. & Enz, J., 01.12.2018, In: Materials Science Forum. 941, p. 988-994 7 p.

    Research output: Journal contributionsConference article in journalResearchpeer-review

  5. Published

    Process Development for Wire-based Laser Metal Deposition of 5087 Aluminium alloy by using Fibre Laser

    Frönd, M., Riekehr, S., Kashaev, N., Klusemann, B. & Enz, J., 08.2018, In: Journal of Manufacturing Processes. 34, Part A, p. 721-732 12 p., 34.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  6. Published

    Microstructure and Microhardness of Wire-based Laser Metal Deposited AA5087 using an Ytterbium Fibre Laser

    Frönd, M., Ventzke, V., Riekehr, S., Kashaev, N., Klusemann, B. & Enz, J., 09.2018, In: Materials Characterization. 143, p. 59-67 9 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  7. Published

    Thermal analysis of laser additive manufacturing of aluminium alloys: Experiment and simulation

    Bock, F. E., Frönd, M., Herrnring, J., Enz, J., Kashaev, N. & Klusemann, B., 02.05.2018, Proceedings of the 21st International ESAFORM Conference on Material Forming, ESAFORM 2018: ESAFORM 2018. Buffa, G., Fratini, L., Ingarao, G. & Di Lorenzo, R. (eds.). American Institute of Physics Inc., 6 p. 140004. (AIP Conference Proceedings; vol. 1960, no. 1).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  8. Published

    Metallurgical aspects of joining commercially pure titanium to Ti-6Al-4V alloy in a T-joint configuration by laser beam welding

    Fomin, F., Frönd, M., Ventzke, V., Alvarez, P., Bauer, S. & Kashaev, N., 01.07.2018, In: The International Journal of Advanced Manufacturing Technology. 97, 5-8, p. 2019-2031 13 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  9. Published

    Experimental and numerical investigation of residual stresses in laser shock peened AA2198

    Keller, S., Chupakhin, S., Staron, P., Maawad, E., Kashaev, N. & Klusemann, B., 01.05.2018, In: Journal of Materials Processing Technology. 255, p. 294-307 14 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  10. Published

    Microstructure by design: An approach of grain refinement and isotropy improvement in multi-layer wire-based laser metal deposition

    Froend, M., Ventzke, V., Dorn, F., Kashaev, N., Klusemann, B. & Enz, J., 20.01.2020, In: Materials Science and Engineering A. 772, 13 p., 138635.

    Research output: Journal contributionsJournal articlesResearchpeer-review

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