Topic: II-3: Assessment of constitutive relationships of modi ed crystalline materials under consideration of nonlinearities, anisotropy and texture

Phone: +49 (0) 3643 58 4109
Room 103
Berkaer Straße 9
Email:idna.wudtke[at]uni-weimar.de

Research Field 

For the analysis of the response of complex structural systems, it is necessary to describe the material constitutive relations by means of an appropriate material model. The level of abstraction of such model may strongly affect the behaviour of the whole structure. In context to that fact, it is necessary to describe the material in a convenient sense as exactly but as simply as possible.

All material phenomena have their seeds in microscopic and nanoscopic scale. Nevertheless, if the material is macroscopically heterogenic, it is appropriate to use phenomenological models for the purpose of civil engineering. Although constantly applied, these models are insufficient for materials with microscopic characteristics such as texture. 

For the analysis of structural response of material with texture (e.g. rolled steel or heat affected zone of a welded joint), it is necessary to extend the phenomenological material description of macroscopic scale and enrich the material model with microscopic information. This has been done by describing the grain texture on a lower scale (mesoscopic scale) and including it in macroscopic constitutive relations by means of homogenization.  An adaptive implementation of the method provides a practicability for the purpose of the analysis of the response of complex structural systems

Tutors: F. Werner, W. Schwarz, Ch. Kaps, Ingraffea, J. Hildebrandt


Selected Publications
 

Lead-Author:

Starcevic, I., Hildebrand, J., Werner, F.: 
Determination of Residual Stresses in Steel Constructions to the Welding Process. In: Joint International Conference on Computing and Decision Making in Civil and Building Engineering (ICCCBE XI),  June 14–16, 2006, Montreal, Canada, pp. 1487-1496, ISBN 2-921145-58-8.


Wudtke, I., Hildebrand, J., Werner, F.: 
Influence on Phase Transformation on Residual Stresses in Steel Constructions due to the Welding Process. In: Proceedings of SDSS2006 International Colloquium on Stability and Ductility of Steel Structures, 6 - 8 September 2006, Lisbon.

Wudtke, I.: 
Einfluss örtlicher Effekte auf das Tragverhalten geschweißter Konstruktionen aus höherfesten Baustählen. In: 1/2006 Forschungsbericht, 16. DASt-Kolloquium Stahlbau, Bundeswehr Universität München, Stahlbau Verlags- und Service GmbH, Düsseldorf, ISBN 13 978-3-923726-80-6, p. 31.

Versch, C., Vormwald, M.; Rasche, C., Kuhlmann, U., Wudtke, I., Hildebrand, J., Werner, F., Heinemann, H.: 
Schweißverbindungen höherfester Stähle im Bauwesen. In: VDI-Wissensforum, 19.-20.03.2007, Leonberg, VDI-Berichte 1970 - Bauen mit innovativen Werkstoffen, pp. 85-101, ISBN 978-3-18-091970-6.

Günther, H.-P., Hildebrand, J., Rasche, C., Versch, C., Wudtke, I., Kuhlmann, U., Vormwald M., Werner, F.: IIW-2096-09 (XV-1315-09) Welded connections of high strength steels for the building industry. In: Welding in the World Issue 5/6 2012, pp. 86-106.

I. Wudtke, Modelling of material phenomena of steel in constitutive relations in context of welding, 18th Int. Conf. on the Application of Computer Science and Mathematics in Architecture and Civil Engineering, Weimar, Germany, July 2009.

I. Wudtke, Constitutive Modelling of Steel With Texture Characteristics, 19th Int. Conf. on the Application of Computer Science and Mathematics in Architecture and Civil Engineering, Weimar, Germany, July 2012.

Wudtke, I.: 
Zur konstitutiven Beschreibung ferritisch-perlitischer Stähle mit Texturcharakteristik. In: 1/2012 Forschungsbericht, 18. DASt-Kolloquium Stahlbau, RWTH Aachen, Stahlbau Verlags- und Service GmbH, Düsseldorf, ISBN: 978-3-929371-26-0

Co-Author:

Hildebrand, J., Starcevic, I., Werner, F., Heinemann, H., Köhler, G.: Numerical Simulation of TIG-Dressing of Welded JointsIn: Joint International Conference on Computing and Decision Making in Civil and Building Engineering (ICCCBE XI),  June 14–16, 2006, Montreal, Canada, pp. 3406-3415, ISBN 2-921145-58-8.

Hildebrand, J., Wudtke, I., Werner, F.: 
Möglichkeiten der mathematischen Beschreibung von Phasenumwandlungen im Stahl bei Schweiß- und WIG-Nachbehandlungsprozessen. In16th Int. Conf. on the Application of Computer Science and Mathematics in Architecture and Civil Engineering, Weimar, Germany, July 2006.

Hildebrand, J., Wudtke, I., Werner, F., Heinemann, H., Köhler, G.: Influence of TIG-Dressing on Structural Conditions and Residual Stresses of Welded Joints. In: Proceedings of SDSS2006 International Colloquium on Stability and Ductility of Steel Structures, 6 - 8 September 2006, Lisbon.

Kuhlmann, U., Günter, H.-P., Rasche, Chr., Werner, F., Hildebrand, J., Wudtke, I., Vormwald, M., Beier, Th., Versch, Chr., Köhler, G., Heinemann, H.: 
Wirtschaftliche Schweißverbindungen höherfester Baustähle. Forschung für die Praxis, Projekt der Forschungsvereinigung Stahlanwendung, Band P 652 (2008) Seite 1-306.

Hildebrand, J., Wudtke, I., Werner, F.: 
Experimentelle und numerische Untersuchungen zum Eigenspannungszustand von Schweißverbindungen höherfester und höchstfesten Feinkornbaustähle. In: SCHWEISSEN & SCHNEIDEN 2009, 14. - 19. September 2009, Essen.

Hildebrand, J., Wudtke, I., Werner, F.: 
Anwendung der numerischen Simulation zur Bestimmung von Gefüge in Schweißverbindungen aus Feinkorn- und Duplex-Stählen. In: 43. Metallographie-Tagung vom 16. - 18. September 2009, Aachen.


Memberships

DVS - Deutscher Verband für Schweißen und verwandte Verfahren