Multiscale model adaptation for dynamic performance of multiphase materials. (10117)

Project nummer: 10117

Omschrijving van het onderzoek

The development of new types of materials with improved mechanical properties requires a costly and time-consuming sequence of controlling the microstructure through chemical composition and processing route and performing extensive testing to assess the resulting macroscopic properties. Within this framework, the overall research goal of this project is to develop a robust multiscale method to simulate the dynamical thermomechanical response of multiphase materials, in particular multiphase steels, and to derive from this a predictive tool to optimize this class of materials in terms of their strength and ductility based on microstructural characteristics. To this end, a series of micro- and mesoscale constitutive models (sub-micron discrete dislocation-transformation models and grain-scale continuum single crystal plasticity-transformation formulations) will be developed to provide insight on the small-scale mechanisms that control the large-scale dynamic (adiabatic) response of multiphase materials. These models will be embedded in hierarchical and concurrent multiscale numerical algorithms to qualitatively verify the constitutive models and to apply them selectively (adaptively) in order to quantitatively improve large-scale computations that incorporate small-scale information. This will ultimately allow the development of macroscale constitutive models that accurately represent the material behavior during forming and crash simulations.

Gebruikers

Two companies are involved in this project.

Projectleider

Dr. S.R. Turteltaub
Technische Universiteit Delft
Faculteit Luchtvaart- en Ruimtevaarttechniek
Engineering Mechanics (EM)
Postbus 5058
2600 GB DELFT

Status van het project

Startdatum:	01-01-2009
Einddatum:	14-01-2012

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