000518271 001__ 518271
000518271 005__ 20240927183952.0
000518271 0247_ $$aG:(GEPRIS)35737123$$d35737123
000518271 035__ $$aG:(GEPRIS)35737123
000518271 040__ $$aGEPRIS$$chttp://gepris.its.kfa-juelich.de
000518271 150__ $$aModeling and computation of time-continuous evolution of microstructures$$y2007 - 2018
000518271 371__ $$aProfessor Dr. Klaus Hackl
000518271 450__ $$aDFG project G:(GEPRIS)35737123$$wd$$y2007 - 2018
000518271 5101_ $$0I:(DE-588b)2007744-0$$aDeutsche Forschungsgemeinschaft$$bDFG
000518271 550__ $$0G:(GEPRIS)28259266$$aFOR 797: Analysis and computation of microstructure in finite plasticity$$wt
000518271 680__ $$aThis project aims to gain a fundamental understanding of the formation and subsequent evolution of microstructures in plastic materials, and to develop comprehensive and efficient tools for their effective computation. The variational formulation in combination with appropriate relaxation concepts and efficient numerical algorithms is a key ingredient of our work.Based on our results from the first period, our proposed model for the description of laminate microstructures in finite plasticity shall be generalized into several directions and validated experimentally. An extension of the existing model to higher-order laminates will be carried out and novel approaches to account for more general, complex microstructure geometries will be addressed. The influence of several active slip systems in terms of latent-hardening interactions will be investigated. Also, the influence of lattice dislocations to constitute the laminate cell walls will be investigated with respect to their essential influence on both laminate formation and the evolution of the laminate orientation. A generalization to account for thermomechanical coupling is envisaged.Specific deformation experiments on single crystals will be performed in order to validate the extended models. The crystals will be oriented in such a way, that exactly two slip systems will be active, which will be most efficient for comparison with the theoretical results. Moreover, cyclic loading test will be performed in order to investigate more closely certain shake-down phenomena predicted by theory.
000518271 909CO $$ooai:juser.fz-juelich.de:944002$$pauthority$$pauthority:GRANT
000518271 909CO $$ooai:juser.fz-juelich.de:944002
000518271 980__ $$aG
000518271 980__ $$aAUTHORITY