GS. TS Klaus Christian Hackl

Research Topics

My research interests comprise the development of models for materials with internal structure and complex behavior and numerical schemes for these. Special emphasis is laid on closely accounting for the physical processes involved and thus reducing the number of phenomenological parameters to a minimum. The material classes studied include poly- and single-crystalline metals, specifically shape-memory alloys, and various bio- and geomaterials. The processes considered include plasticity, recrystallization, growth of biological tissues, damage, diffusion, phase-transformation and formation of microstructure.

Career

10/1999 - 02/2024

University professor: Chair of Mechanics - Materials Theory, Ruhr University Bochum 

Publications

2026

[1] X. Xu, G. Jezdan, H. Yang, X. Guo, Y. He, und K. Hackl, „A variational effective model for multiscale damage analysis“, Computer methods in applied mechanics and engineering, Bd. 449, Art. Nr. 118585, Feb. 2026, doi: 10.1016/j.cma.2025.118585.

[2] H. Haddenhorst, J. Waimann, S. Chakraborty, und K. Hackl, „A material model for compositional resetting due to coupled mechanical and chemical effects“, in EGU General Assembly 2026 , Wien, März 2026, Publiziert. doi: 10.5194/egusphere-egu26-9491.

[3] H. Haddenhorst, J. Waimann, S. Chakraborty, und K. Hackl, „A Phase Field Model to Describe the Behavior of Volcanic Crystals“, Proceedings in applied mathematics and mechanics, Bd. 26, Nr. 2, Art. Nr. e70132, Juni 2026, doi: 10.1002/pamm.70132.

[4] G. Neu u. a., „Modular structures from reused elements : challenges in the utilization of existing foundations“, Beton- und Stahlbetonbau, Bd. 2026, Juni 2026, doi: 10.1002/best.70149.

2025

[1] J. Svoboda, K. Hackl, und F. D. Fischer, „Damping of vibrations of a rod by dissipation due to diffusion“, Scripta materialia, Bd. 257, Art. Nr. 116461, März 2025, doi: 10.1016/j.scriptamat.2024.116461.

[2] P. Junker, T. Bode, und K. Hackl, „On a holistic variational formulation for material modeling including dissipative evolution“, Journal of the mechanics and physics of solids, Bd. 200, Art. Nr. 106133, Apr. 2025, doi: 10.1016/j.jmps.2025.106133.

[3] R. Shi, H. Yang, J. Chen, K. Hackl, S. Avril, und Y. He, „Deep learning without stress data on the discovery of multi-regional hyperelastic properties“, Computational mechanics, Bd. 76, S. 117–146, Jan. 2025, doi: 10.1007/s00466-024-02591-0.

[4] M. Blaszczyk und K. Hackl, „A novel class of electro-mechanical metamaterials for stress reduction through electric fields“, Continuum mechanics and thermodynamics, Bd. 37, Nr. 3, Art. Nr. 53, Apr. 2025, doi: 10.1007/s00161-025-01385-w.

[5] K. Q. Tran, T. V. Duong, T.-D. Hoang, M. A. Wahab, K. Hackl, und H. Nguyen-Xuan, „A new thermoelastic model for agglomerated and randomly-oriented CNT-reinforced bio-inspired materials: Temperature-dependent free vibration analysis of FG-CNTR-TPMS plates“, Engineering analysis with boundary elements, Bd. 174, Art. Nr. 106157, Mai 2025, doi: 10.1016/j.enganabound.2025.106157.

[6] P. Mark u. a., „Modulares Wiederverwenden von Bestandstragwerken“, Bautechnik, Bd. 102, Nr. 8, S. 424–435, Aug. 2025, doi: 10.1002/bate.70000.

[7] M. Tafili u. a., „Charakterisierung und nachhaltige Verbesserung von Bestandsgründungen“, Bautechnik, Bd. 102, Nr. 8, S. 471–482, Aug. 2025, doi: 10.1002/bate.70004.

[8] H. Haddenhorst, J. Waimann, S. Chakraborty, und K. Hackl, „A coupled model for the evolution of size and chemical composition of crystals undergoing diffusion and its geological implications“, 8. Dezember 2025.

[9] H. Haddenhorst, J. Waimann, S. Chakraborty, und K. Hackl, „A material model for the evolution of size and composition of olivine grains in a magma mush zone as a consequence of mechano-chemical effects of diffusion“, in EGU General Assembly 2025, Wien, März 2025, Publiziert. doi: 10.5194/egusphere-egu25-6825.