Veröffentlichungen in nationalen und internationalen Zeitschriften und Proceedings

2020

  • Wagner W., Gruttmann F.: An improved quadrilateral shell element based on the Hu--Washizu functional, Advanced Modeling and Simulation in Engineering Sciences, 7:28, 2020. https://doi.org/10.1186/s40323-020-00162-5
  • Gruttmann F., Wagner W.: Use of Quadratic Strain Interpolation Functions in a Mixed Quadrilateral Shell Element, in: Altenbach H., Chinchaladze N., Kienzler R., Müller W. (eds), Analysis of Shells, Plates, and Beams, Advanced Structured Materials, vol 134, Springer, 155-170, 2020. https://doi.org/10.1007/978-3-030-47491-1_9
  • Gruttmann F., Wagner W.: On an improved 3D stress analysis for elastic composite shells, Computers & Structures, 231, 106172, 2020.
  • Klarmann S., Gruttmann F., Klinkel S.: Homogenization assumptions for coupled multiscale analysis of structural elements: beam kinematics, Computational Mechanics, 65, 635-661, 2020.

2019

  • Zoller J., Gruttmann F.: On boundary conditions and constraints for representative volume elements of a two-scale shell formulation, PAMM-Proceedings in Applied Mathematics and Mechanics, DOI: 10.1002/pamm.201900123, 2019.
  • Klarmann S., Gruttmann F., Klinkel S.: A first order homogenization approach for structural elements: Beam kinematics, PAMM-Proceedings in Applied Mathematics and Mechanics, DOI: 10.1002/pamm.201900181, 2019.
  • Wagner W., Gruttmann F.: On a simple shell model for thin structures with functionally graded materials, in H. Altenbach, J. Chróscielewski, V. Eremeyev, K. Wisniewski (Eds.) 'Recent Developments in the Theory of Shells' Springer Series Advanced Structured Materials, 687-710, ISBN 978-3-030-17746-1, 2019.
  • Gruttmann F., Knust G.: A shell element for the prediction of residual load-carrying capacities due to delamination, Int. J. Num. Meth. Engng., 118, 132-158, 2019.

2018

  • Gruttmann F., Wagner W.: Influence of shear correction factors on eigenfrequencies of layered plates, in: Altenbach, H., Jablonski, F., Müller, W.H., Naumenko, K., Schneider, P. (Eds.): Advances in Mechanics of Materials and Structural Analysis, Springer, Advanced Structured Materials (80) 117-133, ISBN 978-3-319-70562-0, 2018.
  • Wagner W., Gruttmann F.: Evolution of Failure Mechanisms in Composite Shell Structures Using Different Models, in Lecture Notes in Applied and Computational Mechanics, Soric, J., Wriggers, P., Allix, O. (Eds.) Multiscale Modeling of Heterogeneous Structures, Springer, 3-21, ISBN 978-3-319-65462-1, 2018.

2017

  • Klarmann S., Gruttmann F.: Comparsion between substructure and FE2 modeling of beam-like structures, PAMM-Proceedings in Applied Mathematics and Mechanics 17, DOI: 10.1002/pamm.201710130, 321-322, 2017.
  • Knust G.; Gruttmann F.: A layered shell element for the computation of interlaminar shear stresses and thickness normal stresses, PAMM-Proceedings in Applied Mathematics and Mechanics 17,DOI: 10.1002/pamm.201710131, 323-324, 2017.
  • Gruttmann F., Knust G., Wagner W.: Theory and numerics of layered shells with variationally embedded interlaminar stresses, Comp. Meth. Appl. Mech. Engrg., 326, 713-738, 2017.
  • Gruttmann F., Wagner W.: Shear correction factors for layered plates and shells, Computational Mechanics, 59 (1), 129-146, 2017.

2016

  • Heller D., Gruttmann F.: Nonlinear two-scale shell modeling of sandwiches with a comb-like core, Composite Structures, 144, 147-155, 2016.
  • Wagner W., Gruttmann F.: Ein neues FE-Modell zur Berechnung von geschichteten Platten mit kontinuierlichen interlaminaren Schubspannungen, Bauingenieur, 91, 5, 179-187, 2016
  • Wagner W., Gruttmann F.: An adaptive strategy for the multi-scale analysis of plate and shell structures with elasto-plastic material behaviour, Technische Mechanik, 36,1-2, 142-154, 2016.
  • Gruttmann F., Wagner W., Knust G.: A coupled global-local shell model with continuous interlaminar shear stresses, Computational Mechanics, 57, 237-255, 2016.

2015

  • Heller D., Gruttmann F.: A coupled two-scale shell model for comb-like sandwich structures, PAMM-Proceedings in Applied Mathematics and Mechanics 15, DOI: 10.1002/pamm.201510216, 451–452, 2015.
  • Klarmann S., Gruttmann F.: Multi-scale modeling of beam-like structures: A new boundary condition concept for the RVE, PAMM-Proceedings in Applied Mathematics and Mechanics 15, PAMM-Proceedings in Applied Mathematics and Mechanics 15, DOI: 10.1002/pamm.201510218, 455-456, 2015.
  • Maass G., Gruttmann F.: A three-dimensional progressive damage model for fiber reinforced composites with an implicit-explicit integration scheme, PAMM-Proceedings in Applied Mathematics and Mechanics 15, PAMM-Proceedings in Applied Mathematics and Mechanics 15, DOI: 10.1002/pamm.201510060, 139–140, 2015.

2014

  • Wagner, W., Gruttmann, F.: A consistently linearized multiscale model for shell structures, in: W. Pietraszkiewicz, J. Górski (eds.) 'Shell Structures: Theory and Applications', Vol(3), Taylor & Francis, London, ISBN 978-1-138-00082-7, 453-456, 2014.

2013

  • Wagner W., Gruttmann F.: Coupled multiscale finite element analysis of layered shell structures, Proc. SAMPE Conference 2013, Long Beach, CA, USA, 753-764, 2013.
  • Gruttmann F., Wagner W.: A coupled two-scale shell model with applications to layered structures, Int. J. Num. Meth. Engng., 94, 1233-1254, 2013.

2012

  • Hebel J., Gruttmann F., Wagner. W.: Coupled multiscale finite element analysis of shell structures, PAMM-Proceedings in Applied Mathematics and Mechanics 12, DOI: 10.1002/pamm.201210084, 187–188, 2012
  • Wagner W., Gruttmann F.: On the numerical analysis of shell structures with a consistently coupled two-scale model, in A. Ibrahimbegovic et.al.(eds.) 7th Int. Conf. on Computational Mechanics for Spatial Structures, April 02-04, 2012, Sarajevo, Bosnia and Herzegovina, ISBN 978-9958-638-30-5, 389-390, 2012.

2011

  • Gruttmann F.: Nonlinear finite element shell formulation accounting for large strain material models, In: Recent Developments and Innovative Applications in Computational Mechanics, D. Mueller-Hoeppe, S. Loehnert, S. Reese (eds), Springer Berlin Heidelberg, 87-95, 2011.
  • Schröder, J., Balzani, D., Stranghöner N., Uhlemann, J., Gruttmann, F., Saxe, K.: Membranstrukturen mit nicht-linearem anisotropem Materialverhalten – Aspekte der Materialprüfung und der numerischen Simulation, Bauingenieur, 86, 381-389, 2011.
  • Wackerfuß, J., Gruttmann, F.: A nonlinear Hu-Washizu variational formulation and related finite-element implementation for spatial beams with arbitrary moderate thick cross-sections, Comp. Meth. Appl. Mech. Engrg. 200, 1671-1690, 2011.

2010

  • Schürg, M., Wackerfuß, J., Gruttmann, F.: Computation of the three-dimensional stress state in composite shell structures with mixed finite elements, PAMM-Proceedings in Applied Mathematics and Mechanics, 10,1, DOI: 10.1002/pamm.201010101, 217 – 218, 2010.

  • Wisniewski, K., Wagner, W., Turska, E., Gruttmann, F.: Four-node Hu-Washizu elements based on skew coordinates and contravariant assumed strains, Computers & Structures, 88, 1278-1284, 2010.

2009

  • Schürg, M., Wagner, W., Gruttmann, F.: An enhanced FSDT model for the calculation of interlaminar shear stresses in composite plate structures, Computational Mechanics, 44 (6), 765-776, 2009.
  • Ebbing V., Balzani D., Schröder J., Neff P., Gruttmann F.: Construction of anisotropic polyconvex energies and applications to thin shells, Computational Materials Science, 46 (3), 639-641, 2009.
  • Gruttmann, F., Wackerfuß, J., Schürg, M.: A Coupled Local-Global Model for the Analysis of Interlaminar Stresses in Laminated Shell Structures, Proceedings of the 6th International Congress of Croatian Society of Mechanics ICCSM, Dubrovnik,ISBN 978-953-7539-11-5, 2009.
  • Wackerfuß, J., Gruttmann, F.: A mixed hybrid finite beam element with an interface to arbitrary three-dimensional material models, Comp. Meth. Appl. Mech. Engrg., 198, 2053-2066, 2009.

2008

  • Klinkel, S., Gruttmann, F., Wagner, W.: A mixed shell formulation accounting for thickness strains and finite strain 3d material models, Int. J. Num. Meth. Engng., 74, 945-970, 2008.
  • Balzani, D., Gruttmann, F., Schröder, J.: Analysis of thin shells using anisotropic polyconvex energy densities, Comp. Meth. Appl. Mech. Engrg., 197, 1015-1032, 2008.
  • Gruttmann, F., Pham, V.D.: A finite element model for the analysis of buckling driven delamination of thin films on rigid substrates, Computational Mechanics, 41 (3), 361-370, 2008.

2007

  • Gruttmann, F.: On non-linear FE-formulations for thin shells using a three-field variational principle, in: J. Soric, F. Gruttmann, W. Wagner (eds.), Proceedings of Special Workshop: Advanced Numerical Analysis of Shell-like Structures, Zagreb, Croatia, 15-29, 2007.
  • Pham, V.D., Gruttmann, F.: Finite element analysis of telephone cord delaminations of compressed thin films on rigid substrates, in: J. Soric, F. Gruttmann, W. Wagner (eds.), Proceedings of Special Workshop: Advanced Numerical Analysis of Shell-like Structures, Zagreb, Croatia, 227-235, 2007

2006

  • Gruttmann, F., Wagner, W.: Structural analysis of composite laminates using a mixed hybrid shell element, Computational Mechanics, 37, 479-497, 2006.
  • Klinkel, S., Gruttmann, F., Wagner, W.: A Robust Non-Linear Solid Shell Element Based on a Mixed Variational Formulation, Comp. Meth. Appl. Mech. Engrg., 195, 179-201, 2006

2005

  • Wagner, W., Gruttmann, F.: A robust nonlinear mixed hybrid quadrilateral shell element, Int. J. Num. Meth. Engng., 64, 635-666, 2005. Zur Datei
  • Wagner, W., Gruttmann, F.: A nonlinear Hu-Washizu variational formulation for shells and associated quadrilateral finite element, in: W. Pietraszkiewicz, C. Szymczak (eds.), Shell Structures Theory and Application, Taylor & Francis/Balkema, Leiden, 511-514, 2005.
  • Gruttmann, F., Wagner, W.: Finite element formulations for geometrical and material nonlinear shells based on a Hu–Washizu functional, in: D.R.J. Owen, E. Oñate, B. Suàrez (eds.), Proceedings of the Eighth International Conference on Computational Plasticity: Fundamentals and Applications, Barcelona, 630-633, 2005.
  • Gruttmann, F., Wagner, W.: A four-node Mindlin-Reissner shell element with mixed hybrid interpolation, Proceedings of the 5th International Conference on Computation of Shell & Spatial Structures, June 1-4, Salzburg, 2005.
  • Gruttmann, F., Wagner, W.: A linear quadrilateral shell element with fast stiffness computation, Comp. Meth. Appl. Mech. Engrg., 194, 4279-4300, 2005. Zur Datei
  • Eidel, B., Gruttmann F.: Anisotropic pile-up pattern at spherical indentation into a fcc single crystal – finite element analysis versus experiment, in: K.J. Bathe, (Editor): Proceedings of the Third M.I.T. Conference on Computational Fluid and Solid Mechanics, 194-197, 2005
  • Wagner,W., Gruttmann, F.: Formulation of robust shell elements on the basis of mixed variational principles, Gemischte und und Nicht-Standard FE-Methoden mit Anwendungen, Oberwolfach Reports, EMS Publ. House Zürich, 5/2005
  • Gruttmann, F., Wagner, W.: Finite-Element-Modellierungen von Faserverbundstrukturen , 11. Nationales Symposium SAMPE Deutschland e.V., 1-14, 2005
  • Wagner, W., Gruttmann, F.: FEM für Flächentragwerke – Beispiel zur Beurteilung der Leistungsfähigkeit, Baustatik-Baupraxis-9, Institut für Statik und Dynamik der Tragwerke TU Dresden, ISBN 3-00-015456-6, 417-427, 2005

2004

  • Wackerfuß, J.; Gruttmann, F.: FE-formulation for plate and beam elements to simulate onset and propagation of discrete cracks in solid structures, PAMM-Proceedings in Applied Mathematics and Mechanics, Volume 4, Issue 1, 380-381, 2004
  • Gruttmann, F., Wagner,W.: A stabilized one–point integrated quadrilateral Reissner–Mindlin plate element, Int. J. Num. Meth. Engng, 61, 2273–2295, 2004. Zur Datei
  • Klinkel, S., Gruttmann, F., Wagner,W.: Four–Field Mixed Formulation for a Solid– Shell Element, Sixth World Congress on Computational Mechanics (WCCM VI), September 5–10, Peking, China, paper 167, 1-10, 2004.
  • Wagner, W., Gruttmann, F.: On Efficient FE–Formulations in the Stability Analysis of Thin–walled Structures, Sixth World Congress on Computational Mechanics (WCCMVI), September 5-10, Peking, China, paper 509, 1-10, 2004.
  • Gruttmann, F., Wagner, W.: A new stabilized one-point integrated shear–elastic plate element, Proceedings of the Fourth European Congress on Computational Methods in Applied Sciences and Engineering, Jyväskylä, Finnland, 24–28.7.2004, Paper 350, 1-13, 2004. Zur Datei
  • Wagner, W., Gruttmann, F.: Delamination Growth Analysis of Composite Panels, European Journal of Finite Elements, 13, 8, 915–929, 2004. Zur Datei

2003

  • Löblein J., Schröder J., Gruttmann F.: Application of Generalized Measures to an Orthotropic Finite Elasto-Plasticity Model, Computational Materials Science, 28, 3-4, 696–703, 2003.
  • Eidel, B., Gruttmann, F.: Elasto-Plastic Orthotropy at Finite Strains – Multiplicative Formulation and Numerical Implementation, Computational Materials Science, 28, 3-4, 732–742, 2003.
  • Wagner, W., Gruttmann, F.: Ein einheitliches Modell zur Berechnung der Schubspannungen aus St.Venant’scher Torsion in beliebigen Querschnitten prismatischer Stäbe, Technische Mechanik, 23, 2-4, 251–264, 2003. Zur Datei
  • Löblein J., Schröder J., Gruttmann F.: A Model for Finite Orthotropic Plasticity using Generalized Stress–Strain Measures, in: D.A. Indeitsev, (Editor): Advanced Problems in Mechanics, Proceedings of the XXX Summer School APM’ 2002, St. Petersburg, 435–440, 2003.
  • Eidel, B., Gruttmann F.: On the theory and numerics of orthotropic elastoplasticity at finite plastic strains, K.J. Bathe, Editor: Proceedings of the Second M.I.T. Conference on Computational Fluid and Solid Mechanics, 246–248, 2003.
  • Eidel, B., Gruttmann, F.: Finite element analysis of anisotropic structures at large inelastic deformations, in: K. Hutter, H. Baaser (Hrsg.), Deformation and Failure in Metallic Materials, Lecture Notes in Applied and Computational Mechanics, Springer, Berlin, Heidelberg, New York, 10, 51–78, 2003.
  • Löblein J., Schröder J., Gruttmann F., Mehling V.: A Study on Finite Orthotropic Plasticity using Generalized Measures, PAMM–Proceedings in Applied Mathematics and Mechanics, 2, 1, 196–197, 2003.
  • Eidel, B. Gruttmann, F.: On the formulation and finite element implementation of anisotropic multiplicative finite strain elastoplasticity, PAMM–Proceedings in Applied Mathematics and Mechanics, 2, 1, 186–187, 2003.

2002

  • Wagner W., Gruttmann F.: Genaue Berechnung der elastischen Grenzmomente von Walzprofilen bei Torsionsbelastung, Stahlbau, 803-814, 2002. Zur Datei
  • Schröder J., Gruttmann F., Löblein J.: A Simple Orthotropic Finite Elasto–Plasticity Model Based on Generalized Stress–Strain Measures, Computational Mechanics, 30, 48–64 , 2002. Zur Datei
  • Wagner W., Gruttmann F.: A Displacement Method for the Analysis of Flexural Shear Stresses in Thin–Walled Isotropic Composite Beams, Computers and Structures, 80, 1843–1851, 2002. Zur Datei
  • Gruttmann, F., Eidel, B.: On the implementation of anisotropic finite strain plasticity, Proceedings of the Fifth World Congress on Computational Mechanics (WCCM V), July 7-12, 2002, Vienna, Austria, Editors: Mang, H.A.; Rammerstorfer, F.G.; Eberhardsteiner, J., Publisher: Vienna University of Technology, Austria, ISBN 3-9501554-0-6,
  • Wagner, W., Gruttmann, F.: FE-Modeling of Fiber Reinforced Polymer Structures, Proceedings of the Fifth World Congress on Computational Mechanics (WCCM V), July 7-12, 2002, Vienna, Austria, Editors: Mang, H.A.; Rammerstorfer, F.G.; Eberhardsteiner, J., Publisher: Vienna University of Technology, Austria, ISBN 3-9501554-0-6, 2002 Zur Datei
  • Wagner W., Klinkel S., Gruttmann, F.: Elastic and plastic analysis of thin–walled structures using improved hexahedral elements, Computers & Structures, 80, 857–869, 2002. Zur Datei
  • Wagner, W., Gruttmann, F.: Modeling of shell–beam transitions in the presence of finite rotations, Computer Assisted Mechanics and Engineering Sciences, 9, 405–418, 2002. Zur Datei Zur Datei
  • Eidel, B., Gruttmann, F.: Finite strain inelasticity for isotropy, a simple and efficient finite element formulation, PAMM–Proceedings in Applied Mathematics and Mechanics, 1, 1, 185–186, 2002.
  • Gruttmann, F., Wagner, W. : Finite–Element–Berechnungen von räumlichen Stabtragwerken mit elasto–plastischem Materialverhalten, in: D. Dinkler (Hrsg.), Baustatik–Baupraxis 8, A.A. Balkema, Rotterdam/Brookfield, 341–352, 2002.
  • Wagner, W., Gruttmann, F.: Berechnung der Schubspannungen aus Querkraft in dünnwandigen Querschnitten mit einem programmiergerechten Verfahren, in: D. Dinkler (Hrsg.), Baustatik–Baupraxis 8, A.A. Balkema, Rotterdam/Brookfield, 353–364, 2002.

2001

  • Gruttmann, F., Wagner, W.: A Finite Element Model for the Analysis of Delaminations in FRP-Shells, in: W.A. Wall, K.-U. Bletzinger, K. Schweizerhof (eds.), Trends in Computational Structural Mechanics, International Center for Numerical Methods in Engineering (CIMNE) Barcelona, 307–316, 2001. Zur Datei
  • Gruttmann, F., Wagner, W.: Ein Weggrößenverfahren zur Berechnung von Querkraftschubspannungen in dünnwandigen Querschnitten, Bauingenieur, 76, 10, 474–480, 2001. Zur Datei
  • Wagner W., Gruttmann F., Sprenger W.: A finite element formulation for the simulation of propagating delaminations in layered composite structures, Int. J. Num. Meth. Engng, 51, 1337–1359, 2001. Zur Datei
  • Gruttmann F., Wagner W.: Shear correction factors in Timoshenko’s beam theory for arbitrary cross-sections, Computational Mechanics, 27, 199–207, 2001. Zur Datei
  • Wagner W., Gruttmann F.: Finite Element Analysis of Saint–Venant Torsion Problem with Exact Integration of the Elastic–Plastic Constitutive Equations, Comp. Meth. Appl. Mech. Eng., 190, 3831–3848, 2001. Zur Datei

2000

  • Klinkel S., Wagner W., Gruttmann, F.: A Continuum Based 3D-Shell Element for Computation of Laminated Structures and Finite Strain Plasticity Problems, In: Computational Techniques for Materials, Composites and Composite Structures, Civil-Comp Press, 297–310, 2000
  • Gruttmann F., Sauer R., Wagner W.: Theory and numerics of three–dimensional beams with elastoplastic material behaviour, Int. J. Num. Meth. Engng, 48, 1675–1702, 2000. Zur Datei
  • Wagner W., Gruttmann F.: Finite–Element–Modeling of Shell–Beam Transitions with ’Optimal’ Constraints, Proceedings of the IASS-IACM 2000, Fourth International Colloquium on Computation of Shell& Spatial Structures, Creta 4.-7.6. 2000.
  • Sprenger W., Gruttmann F., Wagner W.: Delamination growth analysis in laminated structures with continuum based 3d–shell elements and a viscoplastic softening model, Comp. Meth. Appl. Mech. Eng., 185, 123–139, 2000.
  • Gruttmann F., Wagner W.: St.Venantsche Torsion prismatischer Stäbe mit elastoplastischem Werkstoffverhalten, Bauingenieur, 75, 2, 53–59, 2000. Zur Datei

1999

  • Gruttmann F., Wagner W.: Geometrical and material nonlinear three–dimensional beams – theory and numerics, in: W. Wunderlich (ed.), Proceedings of the European Conference on Computational Mechanics 1999, 276, 1–13, 1999
  • Wagner W., Gruttmann F.: Calculation of Torsional Quantities of Arbitrary Beam Cross–Sections via Adaptive Finite–Element–Formulations, in E. M. Croitor (ed.): Proceedings of the 1st Canadian Conference on Nonlinear Solid Mechanics, Victoria, Canada, 467–477, 1999.
  • Gruttmann F., Sauer R., Wagner W.: Shear stresses in prismatic beams with arbitrary cross–sections, Int. J. Num. Meth. Engng, 45, 865–889, 1999. Zur Datei
  • Klinkel S., Gruttmann F., Wagner W.: A continuum based 3d–shell element for laminated structures, Computers & Structures, 71, 43–62, 1999. Zur Datei
  • Wagner, W., Gruttmann, F.: Finite–Element–Berechnungen von Schubspannungen aus Querkraft in beliebigen Querschnitten prismatischer Stäbe, in: K. Meskouris (Hrsg.), Baustatik–Baupraxis 7, A.A. Balkema, Rotterdam/Brookfield, 75–82, 1999.
  • Wagner W., Sauer R., Gruttmann F.: Tafeln der Torsionskenngrößen von Walzprofilen unter Verwendung von FE–Diskretisierungen, Stahlbau, 68, 2, 102–111, 1999.
  • Wagner, W., Gruttmann, F.: Strategies for the Finite Element Analysis of Nonlinear Composite Structures, in: H. A. Mang, F. G. Rammerstorfer (eds.) Proceedings of the IUTAM Symposium on Discretization Methods in Structural Mechanics II, Wien, 2–6.6.1997, Kluwer Academic Publishers, Dordrecht (1999), 281–290.

1998

  • Gruttmann F., Wagner W., Sauer R.: Zur Berechnung der Schubspannungen aus Querkräften in Querschnitten prismatischer Stäbe mit der Methode der finiten Elemente, Bauingenieur, 73, 11, 485–490, 1998. Zur Datei
  • Wagner W., Gruttmann F., Sauer R.: Large displacement 3d–beam formulations for the eccentric coupling with shells, in: Proceedings of the 4th International Conference on Computational Mechanics, 29.6.– 2.7.1998, Buenos Aires, Argentina, part II, section 7, paper 16, 1-14, 1998.
  • Wagner W., Gruttmann F., Sauer R.: Adaptive Finite–Element–Lösungen von Verwölbungen und Torsionskennwerten beliebiger Querschnitte, In: Wriggers P., Meißner U., Stein E., Wunderlich W. (eds), Finite Elemente in der Baupraxis, Modellierung, Berechnung und Konstruktion, Beiträge zur Tagung FEM 98 an der Technischen Universität Darmstadt am 5. und 6. März 1998, 251–260, 1998.
  • Gruttmann F., Sauer R., Wagner W.: A Geometrical Nonlinear Eccentric 3D–Beam Element with Arbitrary Cross–Sections, Comp. Meth. Appl. Mech. Eng., 160/3-4, 383–400, 1998. Zur Datei
  • Gruttmann F., Wagner W., Sauer R.: Zur Berechnung von Wölbfunktion und Torsionskennwerten beliebiger Stabquerschnitte mit der Methode der finiten Elemente, Bauingenieur, 73, 3, 138–143, 1998.
  • Sauer R., Gruttmann F.: Torsion–Bending Coupling of Prismatical Beams with Finite Elastic Deformations, ZAMM, 78, Suppl. 2, 699–700, 1998.
  • Wagner W., Gruttmann F.: Modeling of Fiber Reinforced Polymer Structures with Damage, ZAMM, 78, Suppl. 1, 69–72, 1998.

1997

  • Wagner, W., Gruttmann, F., R. Sauer: On torsion–bending coupling of three–dimensional beams with finite deformations – Theory and numerical investigations, in: Meskouris K., Wittek, U. (eds.), Aspects in Modern Computational Structural Analysis, A.A. Balkema, Rotterdam/Brookfield, New York, 353–367, 1997.
  • Wagner, W., Gruttmann, F., Klinkel S.: Modeling of Nonlinear Composite Shells with Enhanced 8–node Brick Elements, in Proceedings of the 4th Int. Conf. on Composites Engineering, 6–11.7.1997, Big Island, Hawaii.
  • Wagner W., Stein E., Gruttmann F., Teßmer J.: Modellbildung für die Berechnung des Stabilitätsverhaltens von Faserverbundstrukturen, Abschlußbericht zum Teilprojekt 2 der DFG–Forschergruppe ”Zuverlässigkeit von Modellierung und Berechnung in der Angewandten Mechanik”, Ste 238/25, 1997.

1996

  • Gruttmann F., Wagner W.: Delamination Analysis of Thin Composite Structures Using a Multi– Director Formulation, in: Topping B.H.V. (ed.), Advances in Analysis and Design of Composites, Civil–Comp Press, Edinburgh, 51–59, 1996.
  • Wagner W., Gruttmann F.: Numerical Aspects of the Delamination Analysis in Composite Shell Structures, in: Adali S., Verijenko V.E. (eds), Proceedings of the First International Conference on Composite Science and Technology, 591–596, 1996.
  • Betsch P., Gruttmann F., Stein E.: A 4–node Finite Shell Element for the Implementation of General Hyperelastic 3D–Elasticity at Finite Strains, Comp. Meth. Appl. Mech. Eng., 130, 57–79, 1996.
  • Gruttmann F., Wagner W.: Coupling of Two– and Three–Dimensional Composite Shell Elements in Linear and Nonlinear Applications, Comp. Meth. Appl. Mech. Eng., 129, 271–287, 1996.
  • Gruttmann F.: Theorie und Numerik dünnwandiger Faserverbundstrukturen, Forschungs– und Seminarberichte aus dem Bereich der Mechanik der Universität Hannover, Bericht Nr. F96/1, Hannover, 1996.

1995

  • Gruttmann F., Klinkel S., Wagner W.: A Finite Rotation Shell Theory with Application to Composite Structures, Revue européenne des éléments finis, (European Journal of Finite Elements), 4, 597–631, 1995.
  • Gruttmann F., Wagner W.: A Generalized Nonlinear Finite Element Formulation for Composite Shells, ZAMM 75, Suppl. 1, 153–154, 1995.
  • Gruttmann F., Stein E., Wagner W.: A Generalized FE–Method for Non–Linear Composite Shells with 2D– and 3D–Modeling, in: Atluri S.N., Yagawa G., Cruse T.A. (eds), Computational Mechanics ’95, Springer–Verlag: Berlin, Heidelberg, New York, 2533–2538, 1995.
  • Wriggers P., Eberlein R., Gruttmann F.: An Axisymmetrical Quasi–Kirchhoff–Type Shell Element for Large Plastic Deformations, Arch. Appl. Mech., 65, 465–477, 1995.
  • Wagner W., Gruttmann F.: A Computational Model for the Delamination Analysis of Composite Shells, Proceedings of the Fourth International Conference on Computational Plasticity: Fundamentals and Applications, ed. D.R.J. Owen and E. O~nate, 1191–1202, 1995.

1994

  • Gruttmann F., Wagner W.: On the Numerical Analysis of Local Effects in Composite Structures, Composite Structures 29, 1–12, 1994.
  • Gruttmann F.: Zur Berechnung von Faserverbundstrukturen mit höherwertigen finiten Schalenelementen, ZAMM 74, 4–5, T275–T277, 1994
  • Wagner W., Gruttmann F.: A Simple Finite Rotation Formulation for Composite Shell Elements, Eng. Comp., 11, 145–176, 1994. Zur Datei

1993

  • Gruttmann F., Wagner W., Meyer L., Wriggers P.: A Nonlinear Composite Shell Element with Continuous Interlaminar Shear Stresses, Computational Mechanics 13, 175–188, 1993.
  • Wriggers W., Gruttmann F.: Thin Shells with Finite Rotations formulated in Biot Stresses: Theory and Finite Element Formulation, Int. J. Num. Meth. Engng, 36, 2049–2071, 1993.
  • Ibrahimbegović A., Gruttmann F.: A consistent finite element formulation of nonlinear membrane shell theory with particular reference to elastic rubberlike material, Finite Elements in Analysis and Design, 12, 75–86, 1993.
  • Gruttmann F.: Zur numerischen Behandlung inkompressibler elastischer Membranschalen bei großen Verzerrungen, ZAMM 73, 4–5, T280–T283, 1993.

1992

  • Stein E., Gruttmann F., Seifert B.: Ein gemischtes Variationsfunktional für endliche Deformationen von Schalen und zugehörige Finite–Element– Ansätze für nicht–lockende Membrandeformationen, in: Statik und Dynamik im Konstruktiven Ingenieurbau, Festkolloquium des Sonderforschungsbereiches 151 an der Ruhr–Universität Bochum, 1992.
  • Gruttmann F., Wagner W., Wriggers P.: A Nonlinear Quadrilateral Shell Element with Drilling Degrees of Freedom, Arch. Appl. Mech. 62, 474–486, 1992.
  • Gruttmann F., Taylor R.L.: Theory and Finite Element Formulation of Rubberlike Membrane Shells Using Principal Stretches, Int. J. Num. Meth. Engng. 35, 1111–1126, 1992.

1991

  • Stein E., Gruttmann F., Meyer R., Ohnimus S., Peters K., Rust W., Wagner W., Zhang G.: Numerische Untersuchungen an zwei gelochten CFK-Proben, Abschlußbericht zum Vorhaben DLR–Vertrag 5–131–4303, 1991.
  • Wagner W., Gruttmann, F.: On the Stability Behaviour of Composite Shells, in: P. Ladevèze, O.C. Zienkiewicz (eds.) Proceedings of the European Conference on New Advances in Computational Structural Mechanics, Giens (France), 539–546, 1991.

1990

  • Gruttmann F., Taylor R.L.: Finite Element Formulations of Incompressible Rubberlike Membrane Shells, SEMM-Report UCB/SEMM 90/07, Department of Civil Engineering, University of California Berkeley, 1–30, 1990.
  • Stein E., Gruttmann F., Lambertz K.–H.: Elastic–Plastic Analysis of Thin Shells and Folded Plate Structures with Finite Rotations, in: Krätzig, W.B., Oñate, E. (eds.) Computational Mechanics of Nonlinear Response of Shells, Springer–Verlag, Berlin, Heidelberg, New York, 56–82, 1990.
  • Wriggers P., Gruttmann F.: Large Deformations of Thin Shells: Theory and Finite–Element–Diskretization, in Analytical and Computational Models of Shells (Edited by K. Noor, T. Belytschko and J.C. Simo), ASME CED–Vol. 3, 135–159, 1990.

1989

  • Gruttmann F.: Eine Biegetheorie elastischer Schalen mit endlichen Drehungen, ZAMM 69, 5 T464–T466, 1989.
  • Gruttmann F., Stein E., Wriggers P.: Theory and Numerics of Thin Elastic Shells with Finite Rotations, Ingenieur–Archiv, 59, 54–67, 1989.

1988

  • Gruttmann F.: Theorie und Numerik schubelastischer Schalen mit endlichen Drehungen unter Verwendung der Biot-Spannungen, Forschungs–und Seminarberichte aus dem Bereich der Mechanik der Universität Hannover, Bericht Nr. F88/1, Hannover, 1988.
  • Gruttmann F., Stein E.: Tangentiale Steifigkeitsmatrizen bei Anwendung von Projektionsverfahren in der Elastoplastizitätstheorie, Ingenieur–Archiv, 58, 15–24, 1988.

1987

  • Gruttmann F.: Konsistente Steifigkeitsmatrizen in der Elastoplastizitätstheorie, ZAMM 67, 4, T191–T192, 1987.