Contributions to newspapers, books and conferences as well as dissertations and project reports

Publications: Forming Processes

Publications

 

2017-2019

Diehl, M.; Kertsch, L.; Traka, K.; Helm, D.; Raabe, D., Site-specific quasi in situ investigation of primary static recrystallization in a low carbon steel, Materials Science and Engineering: A 755 (2019) 295-306 Link

Kertsch, L.; Helm, D., A thermodynamically consistent model for elastoplasticity, recovery, recrystallization and grain coarsening, International Journal of Solids and Structures 152-153 (2018) 185-195 Link

Rockenhäuser, C.; Augenstein, E.; Skrotzki, B., Long term ageing of alloy 2618A, in Proc. of 16th International Aluminum Alloys Conference (ICAA16) 2018; Wells, M.; Brochu, M. (Eds.); Metallurgy and Materials Society of CIM, Montreal, Canada (2018) Paper 400101, 10 Seiten Link

Weber, M.; Helm, D., Prediction of the behaviour of copper alloy components under complex loadings by electro-thermomechanical coupled simulations, Materials Science and Technology  (2018) 9 Seiten Link

Kertsch, L.; Helm, D., Thermodynamically consistent modelling of recrystallization and grain coarsening in precipitation‐hardened alloys, PAMM 17/1 Special Issue: 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM); Könke, C.; Trunk, C. (Eds.);  WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim (2017) 425-426 Link

Morand, L.; Pagenkopf, J.; Helm, D., Material-based process-chain optimization in metal forming, PAMM 17/1 Special Issue: 88th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM); Könke, C.;Trunk, C. (Eds.); Wiley-VCH Verlag & Co. KGaA, Weinheim (2017) 709-710 Link

Schuster, S.; Pagenkopf, J.; Gibmeier, J.; Local residual stress analysis on deep drawn cups by means of the incremental hole-drilling method; International Conference on Residual Stresses 2016 ICRS-10, Materials Research Proceedings 2; Holden, T.M.; Muransky, O.; Edwards, L. (Eds.); Material Research Forum LLC, Millersville, USA (2017) 187-192; 251 Link

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2016

Butz, A.; Baiker, M.; Pagenkopf, J.; Helm, D.; Virtual material testing of sheet metals; in Proc. of 9th Forming Technology Forum 2016; Volk, W. (Hrsg.); Technische Universität München, Garching (2016) 13-16

Butz, A.; Pagenkopf, J.; Baiker, M.; Helm, D.; The concept of virtual material testing and its application to sheet metal forming simulations; Journal of Physics: Conference Series 734/PartB (2016) 032107 1-5 Link

Kertsch, L.; Helm, D.; Modelling grain growth in the framework of rational extended thermodynamics; Modelling and Simulation in Materials Science and Engineering MSMSE 24/4(2016) 45001-45017 Link

Kertsch, L.; Helm, D.; Modelling grain coarsening in the framework of rational extended thermodynamics; PAMM 16/1; Special Issue: Joint 87th Annual Meeting of the International Association of Applied Mathematics and Mechanics GAMM 2016 and Deutsche Mathematiker-Vereinigung 2016 Fassbender, H. (Eds.); Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (2016) 453–454 Link

Pagenkopf, J.; Butz, A.; Wenk, M.; Helm, D.; Virtual testing of dual-phase steels: Effect of martensite morphology on plastic flow behavior; Materials Science and Engineering: A 674 (2016) 672-686 Link

Strobl, M.; Morand, L.; Seelig, T.; Simulation of Hertzian cone cracks using a phase field description for fracture; PAMM 16/1; Special Issue: Joint 87th Annual Meeting of the International Association of Applied Mathematics and Mechanics GAMM and Deutsche Mathematiker-Vereinigung 2016; Bach, V.; Fassbender, H. (Hrsg.); Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (2016) 177-178 Link

Uppaluri, R.; Helm, D.; Thermomechanical characterization of 22MnB5 steels with special emphasis on stress relaxation and creep behavior; Materials Science and Engineering: A 658 (2016) 301-308 Link

Zapara, M.; Augenstein, E.; Helm, D.; A mechanism-based model for prediction of damage and failure in cold forging processes; in Proc. of 49th Plenary Meeting of International Cold Forging Group ICFG 2016; Liewald, M. (Ed.); MBA, Stuttgart (2016) 99-102 Link

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2015

Butz, A.; Zapara, M.; Helm, D.; Haufe, A.; Erhard, A.; Schneider, M.; Kampczyk, M.; Stenberg, N.; Hagstrom, J.; Croizet, D.; Biasutti, M.; On the constitutive modelling of twip steels and its application to sheet metal forming simulations; Advanced constitutive models in sheet metal forming, Proc. of 8th Forming Technology Forum Zurich 2015 ; Hora, P. (Ed.); ETH Zürich, Institute of Virtual Manufacturing, Zürich, Schweiz (2015) 35-40 Link

Erhart, A.; Haufe, A.; Butz, A.; Zapara, M.; Helm, D.; Implementation of a constitutive model for the mechanical behavior of TWIP steels and validation simulations; Key Engineering Materials 651-653 (2015) 539-544 Link

Haarman, C.J.W.; Hekman, E.E.G.; Augenstein, E.; Helm, D.; Sketchley, P.; Koopman, H.F.J.M.; Design of a crevice-free bi-metallic intramedullary reamer; in Proc. of Design of Medical Devices Conference DCM Europe 2014; Delft University of Technology, Delft, Niederlande (2015) 2 Seiten Link

Haufe, A.; Erhart, A.; Butz, A.; A constitutive model for the simulation of the deformation behavior of TWIP steels; Key Engineering Materials 639 (2015) 411-418 Link

Vondrous, A.; Bienger, P.; Schreijag, S.; Selzer, M.; Schneider, D.; Nestler, B.; Helm, D.; Mönig, R.; Combined crystal plasticity and phase-field method for recrystallization in a process chain of sheet metal production; Computational Mechanics 55/2 (2015) 439-452 Link

Zheng, L.; Zhang, S.-H.; Helm, D.; Song, H.-W.; Song, G.-S.; Ye, N.-Y.; Twinning and detwinning during compression-tension loading measured by quasi in situ electron backscatter diffraction tracing in Mg-3Al-Zn rolled sheet; Rare Metals 34/10 (2015) 698-705 Link

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2014

Baiker, M.; Helm, D.; Butz, A.; Determination of mechanical properties of polycrystals by using crystal plasticity and numerical homogenization schemes; Steel Research International 85/6 (2014) 988–998 Link

Butz, A.; Zapara, M.; Erhart, A.; Croizet, D.; Stenberg,N.; Hagstrom, J.; Helm, D.; Schneider, M.; Kampczyk, M.; Haufe, A.; Biasutti, M.; Deformation behavoir of TWIP-steels: From experiments to constitutive modelling and simulations; in Proc. of International Deep Drawing Research Group IDDRG 2014 - Innovations for the Sheet Metal Industry; Sfar, H. (Ed.) CETIM, Senlis, France (2014) 38-48

Fromm, A.; Trondl, A.; Strecker, H.; Krappitz, M.; Thissen, D.; Kübler R.; Aging-effects of polymeric encapsulation on the mechanical characteristics of solar panels and embedded components; in Proc. of 29th European Photovoltaic Solar Energy Conference and Exhibition EU PVSEC 2014; Bokhoven, T.P.; Jäger-Waldau, A.; Helm. P. (Eds.); WIP Wirtschaft und Infrastruktur GmbH & Co Planungs KG, München (2014) 3121-3125 Link

He, W.J.; Zhang, S.H.; Prakash, A.; Helm, D.; A hierarchical multi-scale model for hexagonal materials taking into account texture evolution during forming simulation; Computational Materials Science 82 (2014) 464-475 Link

Pagenkopf, J.; Baiker, M.; Helm, D.; On physics-based crystal plasticity models: Application to process chain simulation of steel metals; PAMM 14/1 Special Issue: 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics GAMM 2014 ; Steinmann, P.; Leugering, G. (Hrsg.); Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (2014) 333–334 Link

Zapara, M.; Augenstein, E.; Helm, D.; Prediction of damage in cold bulk forming processes; PAMM 14/1, Special Issue: 85th Annual Meeting of the International Association of Applied Mathematics and Mechanics GAMM 2014,; Steinmann, P.; Leugering, G. (Hrsg.); Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (2014) 1037 – 1040 Link

Zapara, M.; Erhart, A.; Croizet, D.; Butz, A.; Haufe, A.; Helm, D.; Stenberg, N.; Hagstrom, J.; Schneider, M.; Biasutti, M.; Macroscopic modelling and simulations of material behaviour of modern twinning-induced plasticity steels; SCT 2014. Future Trends in steel development, processing Technologies and applications. 4th International Conference on Steels in Cars and Trucks ; Wieland, H.-J.; Brockmann , S. (Hrsg.) Forschungsvereinigung Stahlanwendung e.V. (Hrsg.) Stahleisen GmbH, Düsseldorf (2014) 689-696 Link

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2011-2013

Helm, D.; Baiker, M.; Bienger, P.; Experimental investigations and multiscale modeling of the microstructure evolution and the mechanical properties of a ferritic steel grade during the production process; AIP Conference Proceedings 1532/1 (2013) 197-205 Link

Tritschler, M.; Butz, A.; Helm, D.; Falkinger, G.; Kiese, J.; Experimental analysis and modeling of the anisotropic response of titanium alloy Ti-X for quasi-static loading at room temperature; International Journal of Material Forming 17/3 (2013) 259-273 Link

Zapara, M.; Tutyshkin, N.; Müller, W.H.; Growth and closure of voids in metal at negative stress triaxialities; Key Engineering Materials 554-557 (2013) 1125-1132 Link

Schwaiger, R.; Weber, M.; Moser, B.; Gumbsch, P.; Kraft, O.; Mechanical assessment of ultrafine-grained nickel by microcompression experiment and finite element simulation; Journal of Materials Research 27/1 (2012) 266-277 Link

Helm, D.; Butz, A.; Raabe, D.; Gumbsch, P.; Microstructure-based description of the deformation of metals: theory and application; in Proc. of 1st World Congress on Integrated Computational Materials Engineering ICME 2011; Collins, P.; Allison, J.E.; Spanos, G. (Eds.); John Wiley, Hoboken, NJ, USA (2011) 89-98 Link

Helm, D.; Butz, A.; Raabe, D.; Gumbsch, P.; Microstructure-based description of the deformation of metals: theory and application; JOM – Journal of the The Minerals, Metals & Materials Society (TMS) 63/4 (2011) 26-33 Link

Kadkhodapour, J.; Butz, A.; Rad, S.Z.; Mechanisms of void formation during tensile testing in a commercial, dual-phase steel; Acta Materialia 59/7 (2011) 2575-2588 Link

Kadkhodapour, J.; Butz, A.; Ziaei-Rad, S.; Schmauder, S.; A micro mechanical study on failure initiation of dual phase steels under tension using single crystal plasticity model; International Journal of Plasticity 27/7 (2011) 1103-1125 Link

Sandfeld, S.; Hochrainer, Z.; Zaiser, M.; Gumbsch, P.; Continuum modeling of dislocation plasticity: Theory, numerical implementation, and validation by discrete dislocation simulations; Journal of Material Research 26/5 (2011) 623-632 Link

Ulrich, C. M.; Hashibon, A.; Svoboda, J.; Elsässer, C.; Helm, D.; Riedel, H.; Diffusion kinetics in aluminium–gold bond contacts from first-principles density functional calculations; Acta Materialia 59/20 (2011) 7634-7644 Link

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2008-2010

Butz, A.; Lossau, S.; Springub, B.; Roters, F.; On the modeling of dual phase steels: Microstructure-based simulation from the hot rolled sheet to the deep drawn component; International Journal of Material Forming 3/1 (2010) 73-76 Link

Helm, D.; Helm, D.; Thermomechanical representation of the stored energy during plastic deformation; International Journal of Materials Research 101/8 (2010) 972-980 Link

Sandfeld, S.; Hochrainer, T.; Gumbsch, P.; Zaiser, M.; Numerical implementation of a 3D continuum theory of dislocation dynamics and application to micro-bending; Philosophical Magazine 90/27-28 (2010) 3697-3728 Link

Eisenlohr, P.; Tjahjanto, D.D.; Hochrainer, T.; Roters, F.; Raabe, D.; Comparison of texture evolution in fcc metals predicted by various grain cluster homogenization schemes; International Journal of Materials Research 100/4 (2009) 500-509 Link

Prakash, A.; Lebensohn, R. A.; Simulation of micromechanical behavior of polycrystals: Finite elements versus fast Fourier transforms; Materials Science and Engineering 17/6 (2009) 064010 1-16 Link

Prakash, A.; Riedel, H.; Modeling the evolution of texture and grain shape in Mg alloy AZ31 using the crystal plasticity finite element method; Computational Materials Science 45/3 (2009) 744-750 Link

Butz, A.; Klinkel, S.; Wagner, W.; A geometrically and materially non-linear piezoelectric three-dimensional-beam finite element formulation including warping effects; International Journal for Numerical Methods in Engineering 76/5 (2008) 601-635 Link

Prakash, A.; Hochrainer, T.; Reisacher, E.; Riedel, H.; Twinning models in self-consistent texture simulations of TWIP steels; Steel Research International 79/8 (2008) 645-652 Link

Riedel, H.; Andrieux, F.; Walde, T.; Karhausen, K.-F.; The formation of edge cracks during rolling of metal sheet; Steel Research International 78/10-11 (2007) 818-824 Link

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