Institute of Engineering Mechanics

Publications 2006-2009

2009

Böhlke, T., Langhoff, T.-A., Piat, R.:
Bounds for the Elastic Properties of Pyrolytic Carbon.
PAMM - Proc. Appl. Math. Mech. 9(1), 431–434 (2009)

Böhlke, T., Fritzen, F., Jöchen, K., Tsotsova, R.:
Numerical methods for the quantification of the mechanical properties of crystal aggregates with morphologic and crystallographic texture.
International Journal of Material Forming 2, 915-917, Suppl. 1 (2009)
DOI: 10.1007/s12289-009-0470-4

Böhlke, T., Bondar, G., Estrin, Y., Lebyodkin, M.A.:
Geometrically non-linear modeling of the Portevin–Le Chatelier effect.
Computational Materials Science 44, 1076-1088 (2009)

Bussiba, A., Piat, R., Kupiec, M., Carmi, R., Alon, I. and Böhlke, T.:
Damage onset and growth in carbon-carbon composite monitored by acoustic emission technique.
J. Acoustic Emission, 27 (2009)

Bussiba, A., Piat, R., Boehlke, T., Carmi, R., Alon, I., Kupiec, M.
Mechanical Behavior and Acoustic Response of Carbon/Carbon Composite with Different
Densities.
Proc. Carbon Conf., Biarritz, France (2009)

Fritzen, F., Böhlke, T.:
Analytical inversion of the Jacobian for a class of generalied standard materials.
PAMM 9, 407-408 (2009)

Fritzen, F., Böhlke, T.:
Homogenization of three-dimensional micro-heterogeneous materials using nonuniform transformation fields.
7th EUROMECH Solid Mechanics Conference, J. Ambrosio et.al. (eds.), Lisbon, Portugal, 7–11 September 2009

Fritzen, F., Böhlke, T., Schnack, E.:
Periodic three-dimensional mesh generation for ‎crystalline aggregates based on Voronoi tessellations.
Computational Mechanics 43(5), 701-713 (2009)

Fritzen, F., Böhlke, T.:
Homogenization of the physically nonlinear properties of three-dimensional metal matrix composites using the nonuniform transformation field analysis.
Proceedings of the 17th International Conference on Composite Materials, 27-31 July 2009, Edinburgh, Scotland (2009)

Jöchen, K., Böhlke, T.:
Incremental self-consistent approach for the estimation of nonlinear material behavior of metal matrix composites.
PAMM 9(1), 427-428 (2009)

Jöchen, K., Böhlke, T.:
Combination of the incremental self-consistent scheme and the finite element method with application to metal matrix composites.
Proceedings of the 6th International Congress of Croatian Society of Mechanics, 30. September - 02. October 2009, Dubrovnik, Croatia (2009)

Jöchen, K., Böhlke, T.:
Prediction of the Elastic Properties of Polycrystalline Microcomponents by Numerical Homogenization.
Advanced Engineering Materials, 11(3) (2009)

DOI: 10.1002/adem.200800308

Piat, R., Boehlke, T., Dietrich S., Gebert J.-M., Wanner A.:
Modeling of Effective Elastic Properties of Carbon/Carbon Laminates.
Proc. Seventeenth Int. Conf. Comp. Mater. - ICCM17, Edinburgh, UK (2009)

Piat, R., Boehlke, T., Tsukrov, I., Reznik, B., Deutschmann, O., Bussiba, A.:
Numerical Modeling of the Microstructure of Carbon/Carbon Composites on Different Length Scales.
Proc. Carbon Conf., Biarritz, France (2009)

Schulze, V., Bertram, A., Böhlke, T., Krawietz, A.:
Texture-Based Modeling of Sheet Metal Forming and Springback.
TECHNISCHE MECHANIK, Band 29, Heft 2, 135-159 (2009)

Tsotsova, R., Böhlke, T.:
Representation of effective flow potentials for polycrystals based on texture data.
International Journal of Material Forming 2, 451-454, Suppl. 1 (2009)
DOI: 10.1007/s12289-009-0528-3

Tsotsova, R., Böhlke, T.:
Effective Flow Potentials for Anisotropic Polycrystals.
Appl. Math. Mech. 9, 315-316 (2009)

Ziegler T., Neubrand A., Roy S., Wanner A., Piat R.:
Elastic Constants of Metal/Ceramic Composites with Lamellar Microstructures: Finite Element Modelling and Ultrasonic Experiments.
Composites Science and Technology 69(5), 620-626 (2009)
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2008

Bertram, A., Risy, G., Böhlke, T.:
On Different Strategies for Micro-Macro Simulations of Metal Forming.
In: Micro-Macro-Interactions in Structured Media and Particle Systems, Springer-Verlag, 33-39 (2008)

Böhlke, T., Jöchen, K., Langhoff, T.-A.:
Homogenization of Linear Elastic Properties of Silicon Nitride.
PAMM 8(1), 10535-10536 (2008)
Published Online, DOI: 10.1002/pamm.200810535

Böhlke, T., Jöchen, K., Löhe, D., Schulze, V.:
Estimation of mechanical properties of polycrystalline microcomponents.
International Journal of Material Forming (2008),
Springer Paris, published online (http://www.springerlink.com/content/98800x3181382k02/).
DOI: 10.1007/s12289-008-0091-3

Böhlke, T., Risy, G., Bertram, A.:
Eine mikromechanische Interpretation der v. Mises-Hill´schen Fließbedingung.
In: "Der Pawelski", Umformtechnik im Spannungsfeld zwischen Plastomechanik und Werkstofftechnik, Kurt Steinhoff, Reiner Kopp (Hrsg.),
Bad Harzburg: GRIPS media GmbH (2008)

Böhlke, T., Risy, G., Bertram, A.:
A micro-mechanically based quadratic yield condition for textured polycrystals.
ZAMM 88(5), 379-387 (2008)

Brüggemann, C., Böhlke, T., Bertram, A.:
Modelling and Simulation of the Portevin-Le Chatelier Effect.
In: Micro-Macro-Interactions in Structured Media and Particle Systems, Springer-Verlag, 53-61 (2008)

Bussiba, A., Kupiec, M., Iferfane S., Piat, R., Böhlke, T.:
Damage evolution and fracture events sequence in various composites by acoustic emission technique.
Composites Science and Technology 68, 1144-1155 (2008)
[pdf]

Bussiba, A, Kupiec, M., Piat, R., Böhlke, T.:
Fracture characterization of C/C composites under various stress modes by monitoring both mechanical and acoustic responses.
Carbon 46, 618-630 (2008)
[pdf]

Dimitrov, S., Ekhlakov, A., Langhoff, T.-A.:
Diffuse interface method for simulation of the chemical vapor deposition of pyrolytic carbon: Aspects of the mathematical formulation.
Commun. Numer. Meth. Engng (2008),
published online in Wiley InterScience (http://www.interscience.wiley.com/)
DOI: 10.1002/cnm.1083

Ekhlakov, A., Dimitrov, S., Langhoff, T.-A., Schnack. E.:
Phase-field model for deposition of pyrolytic carbon deposited from methane.
Commun. Numer. Meth. Engng (2008), published online in Wiley InterScience (http://www.interscience.wiley.com/)
DOI: 10.1002/cnm.1082

Fritzen, F., Böhlke, T., Schnack, E.:
Periodic three-dimensional mesh-generation for Voronoi tessellations with application to cubic crystal aggregates.
Proc. Appl. Math. Mech. 8, 10545-10546 (2008)
DOI: 10.1002/pamm.200810545

Gebert, J.-M., Wanner, A., Piat, R., Guichard, M., Rrieck, S., Paluszynski, B., Böhlke, T.:
Application of the micro-computed tomography for analyses of the mechanical behavior of brittle porous materials.
Mechanics of Advanced Materials and Structures, 15(6-7), 467-473(7) (2008)

Leguillon D., Piat R.:
Fracture of porous materials - Influence of the pore size, Toughness of porous materials.
Engineering Fracture Mechanics, 75, 1840-1853 (2008)

Jöchen, K., Böhlke, T., Fritzen, F.:
On estimates for the effective shear modulus of cubic crystal aggregates.
PAMM, 8(1), 10551-10552 (2008)
DOI: 10.1002/pamm.200810551

Piat, R., Tsukrov, I., Böhlke, T., Bronzel, N., Shrinivasa, T., Reznik, B., Gerthsen, D.:
Numerical studies of the influence of textural gradients on the local stress concentrations around fibers in carbon/carbon composites.
Communications in Numerical Methods in Engineering, 24(12), 2194-2205 (2008).

Schneider, Y., Bertram, A., Böhlke, T., Hartig, C.:Plastic Deformation Behaviour of Fe-Cu Composites.
In: Micro-Macro-Interactions in Structured Media and Particle Systems, Springer-Verlag, 63-76 (2008)

Schulze, V., Bertram, A., Böhlke, T., Krawietz, A.:Simulation of Texture Development in a Deep Drawing Process.
In: Micro-Macro-Interactions in Structured Media and Particle Systems, Springer-Verlag, 41-51 (2008)

Tsotsova, R., Böhlke, T.:
Micromechanical Generalization of the Mises-Hill Anisotropy Yield Criterion.
PAMM Proc. Appl. Math. Mech. 8, 10473-10474 (2008)

Tsotsova, R.:
Variational approach to the free-discontinuity problem of inverse crack identification.
Communications in Numerical Methods in Engineering 24(12), 2216-2228 (2008)
DOI: 10.1002/cnm.1078


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2007

Bertram, A., Böhlke, T., Silhavý, M.:
On the rank 1 convexity of stored energy functions of physically linear stress-strain relations.
Journal of Elasticity 86, 235-243 (2007)
DOI: 10.1007/s10659-006-9091-z
[pdf]

Bertram, A. Böhlke, T., Krawietz, A., Schulze, V.:
Finite element simulation of sheet metal forming and springback using a crystal plasticity approach.
Materials Processing and Design: Modeling, Simulation and Applications. NUMIFORM 2007.
Porto 17.-21.6.07, Hrg. J. M. A. César de Sá, A. D. Santos, 769-773 (2007)

Böhlke, T., Glüge, R., Klöden, B., Skrotzki, W., Bertram, A.:
Finite element simulation of texture evolution and Swift effect in NiAl under torsion.
Modelling Simul. Mater. Sci. Eng. 15, 619-637 (2007)
[pdf]

Bondár, G., Böhlke, T., Estrin, Y.:
Three-dimensional continuum mechanical modeling of the Portevin-Le Châtelier effect.
PAMM · Proc. Appl. Math. Mech. 7, 4060035-4060036 (2007)
DOI: 10.1002/pamm.200700555

Fritzen, F., Böhlke, T., Schnack, E.:
Modeling of latent energy storage effects in thermoplasticity of metals.
PAMM · Proc. Appl. Math. Mech. 7, p. 4080017–4080018 (2007)
DOI: 10.1002/pamm.200700449

Jöchen, K., Böhlke, T.:
Elastic properties of microcomponents under uniaxial stress.
PAMM · Proc. Appl. Math. Mech. 7, 4080011–4080012 (2007)
DOI: 10.1002/pamm.200700399

Leguillon, D., Piat, R.:
Fracture of porous materials - Influence of the pore size.
Engineering Fracture Mechanics, Article in press
[pdf]

Paluszynski, B., Böhlke, T.:
Aspects of the modeling of high-cycle fatigue.
Key Engineering Materials, Vols. 348–349, 121–124 (2007)
DOI:10.4028/www.scientific.net/KEM.348-349.121

Piat, R:
Hierarchical models of chemical infiltrated carbon/carbon composites.
In Ed: Aliabadi, M.H. et al.: Advances in Fracture and Damage mechanics VI, Trans Tech Publications Ltd., Switzerland,
665-668 (2007)

Piat, R., Lapusta, Y., Böhlke, T., Guellali, M., Reznik, B., Gerthsen, D., Chen, T., Oberacker, R., Hoffmann, M. J.:
Microstructure-induced thermal stresses in pyrolytic carbon matrices at temperatures up to 2900°C.
Journal of the European Ceramic Society 27, 4813-4820 (2007)
http://dx.doi.org/10.1016/j.jeurceramsoc.2007.03.023

Piat, R., Roser, M., Fritzen, F., Schnack, E.:
Numerische Modellierung des Rissfortschritts in porösen CVI-CFC Verbundwerkstoffen.
MP Materialprüfung 49(4), 170-176 (2007)

Risy, G., Böhlke, T., Bertram, A.:
Modelling the plastic anisotropy in sheet metals on different scales.
Proceedings of IMPLAST 2007, 21.-24. Aug. 2007 in Bochum, Hrg. O. T. Bruhns, A. Meyers,
The University Press Bochum, 445-449 (2007)

Risy, G., Böhlke, T., Bertram, A.:
A micro-mechanically based quadratic yield condition for textured polycrystals.
Continuum Mechanics Preprint No 2, Institut für Technische Mechanik, Universität Karlsruhe (TH), 17 Seiten (2007)

Schulze, V., Bertram, A., Böhlke, T., Krawietz, A.:
Texture-based modeling of sheet metal forming and springback.
Continuum Mechanics Preprint No 3, Institut für Technische Mechanik, Universität Karlsruhe (TH), 30 Seiten (2007)

Seemann, W., Ekhlakov, A., Glushkov, E., Glushkova, N., Kvasha, O.:
The modeling of piezoelectrically excited waves in beams and layered substructures.
Journal of Sound and Vibration 301(3-5), 1007-1022 (2007)
DOI:10.1016/j.jsv.2006.10.037
[pdf]

Tsotsova, R.:
Variational approach to the free-discontinuity problem of inverse crack identification.
Communications in Numerical Methods in Engineering (2007), published online
DOI: 10.1002/cnm.1078

Tsotsova, R.:
The free-discontinuity problem of inverse crack identification from boundary measurements.
PAMM Proc. Appl. Math. Mech. 7, 2150007-2150008 (2007)


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2006 (Bold Roman: Refereed Journal Article)

Bertram, A., Böhlke, T., Brüggemann, C., Estrin, Y., Lebyodkin, M.:
Modeling and simulation of the Portevin-Le Chatellier effect.
PAMM 6, 353-354 (2006)
DOI: 10.1002/pamm./200610158
[pdf]

Böhlke, T., Haus, U., Schulze, V.:
Crystallographic texture approximation by quadratic programming.
Acta Materialia 54, 1359-1368 (2006)
[pdf]

Böhlke, T., Risy, G., Bertram, A.:
Finite element simulation of metal forming operations with texture based material models.
Modelling Simul. Mater. Sci. Eng. 14, 365-387 (2006)
[pdf]

Böhlke, T., Förster, R.:
Electro chemical machining with oscillating tool electrode: estimation of maximum pressure.
International Journal of Electricial Engineering 11, 9-14 (2006)
[pdf]

Böhlke, T.:
Texture simulation based on tensorial Fourier coefficients.
Computers and Structures 84, 1086-1094 (2006)
[pdf]

Glüge, R., Böhlke, T., Bertram, A.:
Texture evolution and Swift effect in NiAl.
PAMM 6, 477-478 (2006)
DOI: 10.1002/pamm.200610219
[pdf]

Glushkov, E., Glushkova, N., Ekhlakov, A., Shapar, E.:
An analytically based computer model for surface measurements in ultrasonic crack detection.
Wave Motion 43, 458-473 (2006)
[pdf]

Langhoff, T.-A., Schnack, E.:
Energetic modelling for carbon fibre reinforced carbon.
Proceedings of Applied Mathematics and Mechanics 6, 495-496 (2006)
DOI: 10.1002/pamm.200610228

Paluszynski, B., Schnack, E.:
Isotropic softening model for high-cycle fatigue.
Proceedings of Applied Mathematics and Mechanics 6, 187-188 (2006)

Piat, R.:
Numerical modeling of brittle fracture in porous CFC materials.
PAMM 6(1), 191-192 (2006)
http://dx.doi.org/10.1002/pamm.200610076

Piat, R., Tsukrov, I., Mladenov, N., Verijenko, V., Guellali, M., Schnack, E., Hoffmann, M. J.:
Material modeling of the CVI-infiltrated C-felt. I. Basic formulae, theory and numerical experiments.
Composites Science and Technology 66(15), 2997-3003 (2006)
[pdf]

Piat, R., Tsukrov, I., Mladenov, N., Guellali, M., Ermel, R., Beck, T., Schnack, E., Hoffmann, M. J.:
Material modeling of the CVI-infiltrated C-felt. II. Statistical study of the microstructure, numerical analysis and experimental validation.
Composite Science and Technology 66(15), 2769-2775 (2006)
[pdf]

Schnack, E., Dimitrov, S., Langhoff, T.-A.:
Computational identification of interface delaminations in layered composites based on surface measurements.
Archive of Applied Mechanics 76(11-12), 747-758 (2006)
DOI: 10.1007/s00419-006-0043-7

Schnack, E., Langhoff, T.-A, Dimitrov, S.:
A Richardson-type iterative approach for identification of delamination boundaries.
Fundamentalnaya Iprikladnaya Matematika (Fundamental and Applied Mathematic),12(4), 209-230 (2006)

Tsotsova, R., Schnack, E.:
Inverse identification of delamination regions in layered CFRP-composites.
Proceedings of Applied Mathematics and Mechanics 6, 271-272 (2006)