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**Harvard**

Lindfeldt, E. och Ekh, M. (2013) *On the Prediction of Macroscopic Yield Surfaces of a Pearlitic Steel using Multiscale Modeling*.

** BibTeX **

@conference{

Lindfeldt2013,

author={Lindfeldt, Erik and Ekh, Magnus},

title={On the Prediction of Macroscopic Yield Surfaces of a Pearlitic Steel using Multiscale Modeling},

booktitle={Complas},

abstract={On the microscale, pearlite consists of hard and brittle cementite lamellae embedded in a ductile ferrite
matrix. The cementite lamellae are arranged in colonies within which the lamella orientation is ideally
constant. This composite-like constitution, on the microscale, makes pearlitic steels ideally suited for
multiscale modeling.
In this contribution a three-scale multiscale modeling setup is used to describe the mechanical behav-
ior of a pearlitic steel. The macroscale represents the engineering scale on which a typical structural
component would be analyzed. The mesoscale comprises colonies, with varying orientations (both mor-
phological and crystallographic), thereby enabling the interactions between colonies to be taken into
account. On the microscale a model representing the lamellar structure of pearlite is used. This model
accounts for the behavior of the constituents but also the interactions between them.
A cornerstone in this contribution is the formulation of a macroscopic, energy based, yield criterion
based on homogenized quantities (cf. e.g. [1, 2, 3]). With such a criterion macroscopic yield surfaces
can be predicted. The impact of altering the prolongation condition on the resulting yield surface is
studied. Furthermore, the effect of adding a pre-loading before carrying out the yield surface prediction
is investigated.
Regarding the topic of how to identify the correct values of the parameters in a multiscale model several
possibilities exists. This topic will be discussed briefly.},

year={2013},

}

** RefWorks **

RT Conference Proceedings

SR Electronic

ID 192754

A1 Lindfeldt, Erik

A1 Ekh, Magnus

T1 On the Prediction of Macroscopic Yield Surfaces of a Pearlitic Steel using Multiscale Modeling

YR 2013

T2 Complas

AB On the microscale, pearlite consists of hard and brittle cementite lamellae embedded in a ductile ferrite
matrix. The cementite lamellae are arranged in colonies within which the lamella orientation is ideally
constant. This composite-like constitution, on the microscale, makes pearlitic steels ideally suited for
multiscale modeling.
In this contribution a three-scale multiscale modeling setup is used to describe the mechanical behav-
ior of a pearlitic steel. The macroscale represents the engineering scale on which a typical structural
component would be analyzed. The mesoscale comprises colonies, with varying orientations (both mor-
phological and crystallographic), thereby enabling the interactions between colonies to be taken into
account. On the microscale a model representing the lamellar structure of pearlite is used. This model
accounts for the behavior of the constituents but also the interactions between them.
A cornerstone in this contribution is the formulation of a macroscopic, energy based, yield criterion
based on homogenized quantities (cf. e.g. [1, 2, 3]). With such a criterion macroscopic yield surfaces
can be predicted. The impact of altering the prolongation condition on the resulting yield surface is
studied. Furthermore, the effect of adding a pre-loading before carrying out the yield surface prediction
is investigated.
Regarding the topic of how to identify the correct values of the parameters in a multiscale model several
possibilities exists. This topic will be discussed briefly.

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/192754/local_192754.pdf

OL 30