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Alexander Janz

M.Sc. Alexander Janz

Akademischer Mitarbeiter
Sprechstunden: 

Montag, 14.00 - 15.00 Uhr


Raum: 207
Tel.: +49 721 608-43715
Fax: +49 721 608-47790
Alexander JanzEsj4∂kit edu

Institut für Mechanik
Karlsruher Institut für Technologie (KIT)
Geb. 10.30
Otto-Ammann-Platz 9
D-76131 Karlsruhe



Lehre (Übungen)

Grundlagen Finite Elemente (WS 2017/18)
Dynamik (WS 2016/17)
Kontinuumsmechanik (WS 2016/17)
Festigkeitslehre (SS 2016)
Finite Elemente in der Festkörpermechanik (SS 2015, SS 2017)
Statik starrer Körper (WS 2015/16, WS 2014/15)
 

Arbeitsgebiete

Numerische Mechanik
Strukturerhaltende Integratoren
Gemischte Finite Element Methoden

Betreute Arbeiten (BA, MA)

Wang, Meng: Modellierung und Visualisierung eines 2FHG-Systems (BA, 2017)
Schneider, Simeon: Zur Theorie und Numerik inkompressiblen Materialverhaltens (MA, 2017)

Veröffentlichungen

Betsch, P., Janz, A., Hesch, C.: A mixed variational framework for the design of energy-momentum schemes relying on polyconvex stored energy functions. Submitted for Comput. Methods Appl. Mech. Eng., 2017

Franke, M., Janz, A., Schiebl, M., Betsch, P.: An energy-momentum consistent integration scheme using a polyconvexity-based framework for non-linear thermo-elastodynamics. Submitted for Int. J. Numer. Meth. Engng, 2017

Betsch, P., Franke, M., Janz, A.: Polyconvexity and the design of mixed finite elements. In: Proceedings of the ECCOMAS Thematic Conference on Modern Finite Element Technologies (MFET) 2017, Physikzentrum Bad Honnef, Germany, 2017

Janz, A., Betsch, P., Hesch, C.: An algorithmic stress formula for energy conserving time integration in a mixed framework for polyconvex large strain elasticity. Submitted for Proc. Appl. Math. Mech. (PAMM), Vol. 17, 2017

Hesch, C., Gil, A.J., Ortigosa, R., Dittmann, M., Bilgen, C., Betsch, P., Franke, M., Janz, A., Weinberg, K.: A framework for polyconvex large strain phase-field methods to fracture. Comput. Methods Appl. Mech. Eng., Vol. 317, 649-683, 2017, DOI

Janz, A., Betsch, P., Hesch, C.: Mixed integrators for structure-preserving simulations in nonlinear structural dynamics. Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering, Crete Island, Greece, 5 - 10 June, 2016

Janz, A., Betsch, P., Hesch, C.: Structure-preserving space-time discretization of nonlinear structural dynamics based on a mixed variational formulation. Proc. Appl. Math. Mech. (PAMM), Vol. 16(1), 205-206, 2016, DOI

Betsch, P., Janz, A.: An energy-momentum consistent method for transient simulations with mixed finite elements developed in the framework of geometrically exact shells. Int. J. Numer. Meth. Engng 108(5), 423-455, 2016, DOI

Betsch, P., Becker, C., Franke, M., Yang, Y., Janz, A.: A comparison of DAE integrators in the context of benchmark problems for flexible multibody dynamics. Journal of Mechanical Science and Technology 29 (7), 2015, 2653-2661, DOI 

Betsch, P., Janz, A.: Energy-momentum conserving discretization of mixed shell elements for large deformation problems. Proc. Appl. Math. Mech. (PAMM), vol. 15(1), 205-206, 2015, DOI

Vorträge

Janz, A., Betsch, P.: Structure-preserving space-time discretization for continuum dynamics in a mixed framework for polyconvex large strain elasticity. 3rd International Conference on Computational Models for Solids and Fluids - ECCOMAS MSF 2017, Ljubljana, Slovenia, September 20 - 22, 2017

Betsch, P., Franke, M., Janz, A.: Polyconvexity and the design of mixed finite elements. ECCOMAS Thematic Conference on Modern Finite Element Technologies (MFET) 2017, Physikzentrum Bad Honnef, Germany, August 21 - 23, 2017

Janz, A., Betsch, P.: Energy-momentum consistent time integration schemes based on a polyconvex framework for non-linear (thermal) -elastodynamics. Zienkiewicz Centre for Computational Engineering Seminar Series, Swansea, Wales, July 2017

Janz, A., Betsch, P., Hesch, C.: An algorithmic stress formula for energy conserving time integration in a mixed framework for polyconvex large strain elasticity. 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Weimar, Germany, March 06 - 10, 2017

Janz, A., Betsch, P., Hesch, C.: Mixed integrators for structure-preserving simulations in nonlinear structural dynamics. VII European Congress on Computational Methods in Applied Sciences and Engineering, Crete Island, Greece, 5 - 10 June, 2016

Janz, A., Betsch, P., Hesch, C.: Structure-preserving space-time discretization of nonlinear structural dynamics based on a mixed variational formulation. 87th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Braunschweig, Germany, March 07 - 11, 2016

Janz, A., Betsch, P.: Structure-preserving integration with mixed finite elements. 86th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Lecce, Italy, March 23 - 27, 2015

Kursteilnahme

Short Course at ECCOMAS MSF 2017, Current Research on Solids & Fluids, Ljubljana, 2017
Geometric Methods in Dynamics, Summerschool Applied Mathematics and Mechanics, Großbothen, 2017
Introduction to LS-PrePost, Training seminar, DYNAMORE, 2015
Introduction to LS-DYNA, Training seminar, DYNAMORE, 2015
Introduction to LS-DYNA Advanced Topics, Training seminar, DYNAMORE, 2015
Element Types & Nonlinear Aspects, Training seminar, DYNAMORE, 2015
Advanced Finite Element Technologies, CISM Course, Udine, 2014