Url https://www.cimne.com/sgp/rtd/Project.aspx?id=643
LogoEntFinanc LogoPlan
Acronym EACY
Project title Marco computacional de alta precisión para localización de deformaciones y mecanismos de fallo
Reference MAT2013-48624-C2-1-P
Principal investigator Luis Miguel CERVERA RUIZ - mcervera@cimne.upc.edu
Michele CHIUMENTI - michele@cimne.upc.edu
Start date 01/01/2014 End date 31/12/2016
Coordinator CIMNE
Consortium members
Program Fomento inv.cient.-téc.de Excelencia: Generación conocimiento Call Proyectos de I+D (Excelencia 2013)
Subprogram Proyectos de I+D (Excelencia) Category Nacional
Funding body(ies) MINECO Grant 49.387,76 €
Abstract The aim of the project is to develop, implement and validate an integral computational and experimental framework for the enhanced accuracy modeling of strain localization and failure mechanisms. The model must encompass elasto-plastic, elasto-damaging and elasto-plastic-damaging materials and be applicable to mode I, II and III fracture. THE MAIN SCIENTIFIC GOALS EXPECTED FROM THE PROJECT ARE: 1. To provide a consistent link between the different models used in engineering and material science to model fracture, at continuum, discrete and computational levels. 2. To upgrade the understanding of strain localization and failure mechanisms by providing an integrated framework to serve as a common ground for them. 3. To push the state of the art knowledge on modeling of material failure, including the incompressible behavior. 4. To push the state of the art knowledge on stabilized mixed finite element formulations for Computational Mechanics. 5. To perform monitored strain localization experimental tests with simultaneous visualizing techniques (load, strain field, overall displacement, temperature measurement...) 6. To deepen in the understanding of strain localization processes, and the influence of the material and relevant process parameters (e.g. rotation speed, pressure force and advancing speed for FSW) 7. To gain understanding on the physical phenomena underlying strain localization both in fracture related events and in shear band formation in hot forming and materials processing (dynamic recrystallization, size of shear band, grain and dislocation structure) THE OBJECTIVES OF THE PROJECT ARE: 1. The formulation, development and validation of a next generation of predictive methods for strain localization and failure based on new mixed (strain/pressure/displacement) mathematical models and efficient computational procedures, 3. The extension and validation of the integral EACY framework to account for the major prototype constitutive models (elasto-plasticity, elasto-damage and combinations of these, and rigid-plasticity), 4. The application of the EACY framework for predicting the risk of failure in modes I, II and III and mixed modes. 5. The application of the EACY framework to sheet metal fracture and FSW, 6. The implementation of experimental tests relevant for localization phenomena validation with special emphasis on strain localization visualization, 7. The understanding of localization phenomena in the selected processes to enhance the knowledge of the inner operating processes, 8. The development of new knowledge in the field of adiabatic shear banding. The main outcome of the project will be a formulation, methods and codes for the computational modeling of strain localization and failure mechanics, encompassing the most relevant kinematical and constitutive assumptions used in engineering sciences and practice. These will have enhanced stress accuracy compared to the existing computational methods and will be experimentally validated, allowing for reliable predictive capabilities.