Numerische Mechanik

Gemischte Finite Elemente Methoden

Ludwig-Lenz-Züblin-Preis
für besondere Leistungen im Masterstudium, Juli 2019

DYNAmore-Preis 2018
für die Masterarbeit "Erweiterung der Enhanced Assumed Strain Methode basierend auf der Struktur polykonvexer Verzerrungsenergiefunktionen für große Deformationen"

Numerische Strukturdynamik (SS 2021)
Dynamik (WS 2020/21)
Festigkeitslehre (SS 2020)
Statik starrer Körper (WS 2019/20)
Finite Elemente in der Festkörpermechanik (SS 2019)
Baudynamik-Praktikum (WS 2018/19)
Baudynamik (WS 2018/19)
Kontaktmechanik - Einführung und Grundlagen (SS 2017, SS 2018)

Jundt, Jonas. Fußgängerbrücke mit Schwingungstilger - Dynamische Modellbildung und optimale Tilgerauslegung (BA, 2022).

Mols, Felix. Analyse des Schwingungsverhaltens eines Einfeldträgers unter beweglicher Belastung mittels Finite-Differenzen-Methode (BA, 2021).

Hille, Moritz: Combination of mixed finite elements for nearly incompressible large deformation solid mechanics (MA, 2020)

Fischer, Anna: Untersuchung von Hourglass-Stabilisierungstechniken im Rahmen der Finite-Elemente-Methode (MA, 2019)

Investigation of Interlaminar Fracture Mechanics of FRP using Digital Image Correlation, Dr.-Ing. Mathias Merzkirch, Karlsruhe Institute of Technology, Karlsruhe, Germany, April 23-26, 2019

Parameteridentifikation mit LS-OPT, DYNAmore training seminar, Stuttgart, Germany, November 11, 2018

Modeling in Engineering using Innovative Numerical Methods for Solids and Fluids, CISM Advanced Course, Udine, Italy, October 15-19, 2018

Hille, M., Pfefferkorn, R., Betsch, P.: Locking-free mixed finite element methods and their spurious hourglassing patterns. In: Current Trends and Open Problems in Computational Mechanics. Ed. by Aldakheel, F., Hudobivnik, B., Soleimani, M., Wessels, H., Weißenfels, C. and Marino M. Cham. Springer, 2022, pp. 181-194, DOI

Pfefferkorn, R., Betsch, P.: Hourglassing- and locking-free mesh distortion insensitive Petrov-Galerkin EAS element for large deformation solid mechanics. Int J Numer Methods Eng., 2022, DOI

Pfefferkorn, R., Betsch, P.: Mesh distortion insensitive and locking-free Petrov-Galerkin low-order EAS elements for linear elasticity. Int J Numer Methods Eng. 122(23), 6924-6954, 2021, DOI

Pfefferkorn, R., Bieber, S., Oesterle, B., Bischoff, M., Betsch, P.: Improving efficiency and robustness of enhanced assumed strain elements for nonlinear problems. Int J Numer Methods Eng., 122(8), 1911-1939, 2021, DOI

Pfefferkorn, R., Betsch, P.: Open issues on the EAS method and mesh distortion insensitive locking-free low-order unsymmetric EAS elements. 14th World Congress on Computational Mechanics (WCCM)ECCOMAS Congress 2020), DOI

Pfefferkorn, R., Betsch, P.: Extension of the enhanced assumed strain method based on the structure of polyconvex strain-energy functions. Int. J. Numer. Meth. Engng, 121(8), 1695-1737, 2020, DOI

Pfefferkorn, R., Betsch, P.: On transformations and shape functions for enhanced assumed strain elements. Int. J. Numer. Meth. Engng, 120(2), 231-261, 2019, DOI

Pfefferkorn, R., Betsch, P.: Transformations and enhancement approaches for the large deformation EAS method. PAMM Proc. Appl. Math. Mech. 19(1), e201900135, 2019, DOI

Pfefferkorn, R., Betsch, P.: Mesh distortion insensitive hourglassing-free Petrov-Galerkin EAS elements for large deformation solid mechanics. 92th GAMM Annual Meeting. Aachen, Germany, Aug. 15-19, 2022.

Pfefferkorn, R., Betsch, P.: Hourglassing-free Petrov-Galerkin enhanced assumed strain finite elements insensitive to mesh-distortion for nonlinear solid mechanics. 15th World Congress on Computational Mechanics (WCCM) & 8th Asian Pacific Congress on Computational Mechanics (APCOM). Yokohama, Japan (virtual congress), July 31- Aug. 5, 2022.

Pfefferkorn, R., Betsch, P.: Petrov-Galerkin EAS elements for mesh-distortion insensitive FE-simulations in solid mechanics. 6th ECCOMAS Young Investigators Conference (YIC). Valencia, Spain (virtual congress), July 7-9, 2021.

Pfefferkorn, R., Gil, A.J., Ortigosa, R., Betsch, P.: Energy-momentum preserving time integration schemes for Petrov-Galerkin EAS mixed finite elements. 8th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS). Oslo, Norway, June 5-9, 2022.

Pfefferkorn, R. und Betsch, P.: High Performance Mesh Distortion Insensitive Unsymmetric EAS Elements for Linear Elasticity, 91st GAMM Annual Meeting, Kassel, Germany, March 16, 2021.

Pfefferkorn, R. und Betsch, P.: Open Issues on and Extensions to the Large Deformation EAS Method, European Community on Computational Methods in Applied Sciences (ECCOMAS) Congress 2020 & 14th World Congress on Computational Mechanics (WCCM), Paris, Jan. 11, 2021.

Pfefferkorn, R., Bieber, S., Oesterle, B., Bischoff, M., und Betsch, P.: Increasing Robustness of Large Deformation EAS elements in Newton-Raphson Iterations, European Community on Computational Methods in Applied Sciences (ECCOMAS) Congress 2020 & 14th World Congress on Computational Mechanics (WCCM), Paris, Jan. 11, 2021.

Pfefferkorn, R., Betsch, P.: Extension of the Nonlinear EAS method based on the Structure of Polyconvex Strain-Energy Functions. ECCOMAS Thematic Conference on Modern Finite Element Technologies (MFET) 2019, Physikzentrum Bad Honnef, Germany, July 1-3, 2019

Pfefferkorn, R., Betsch, P.: Transformations and Enhancement Approaches for the Large Deformation EAS Method. 90th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Vienna, Austria, February 18-22, 2019