TY - CHAP

T1 - Application of crystal plasticity to modeling the deformation behavior of sheet metal mesocrystals

AU - Klusemann, Benjamin

AU - Svendsen, Bob

AU - Vehoff, Horst

N1 - Conference code: 5

PY - 2010

Y1 - 2010

N2 - In this work a material model formulation is presented, based on an algorithmic flow rule for small elastic strain, small time steps and plastic incompressibility based on finite kinematics. This leads to an explicit algorithm which is used for a crystal-plasticity-based model formulation for anisotropic elastic ideal viscoplastic materials. This model is applied to simulate the sheet metal specimens with large grains subjected to tensile tests. The experimental results for a bcc Fe-3%Si sample loaded incrementally in tension are taken from literature. The deformation of the individual grains have been measured as well as the local orientation after each loading step. These results are compared to the obtained simulation results of the deformation. Simulations are performed with crystallographic glide on either {110} or {112} systems or both systems simultaneously. First results showed, if no hardening is included the results are already in good agreement, which shows the importance of predicting initially active glide systems correctly.

AB - In this work a material model formulation is presented, based on an algorithmic flow rule for small elastic strain, small time steps and plastic incompressibility based on finite kinematics. This leads to an explicit algorithm which is used for a crystal-plasticity-based model formulation for anisotropic elastic ideal viscoplastic materials. This model is applied to simulate the sheet metal specimens with large grains subjected to tensile tests. The experimental results for a bcc Fe-3%Si sample loaded incrementally in tension are taken from literature. The deformation of the individual grains have been measured as well as the local orientation after each loading step. These results are compared to the obtained simulation results of the deformation. Simulations are performed with crystallographic glide on either {110} or {112} systems or both systems simultaneously. First results showed, if no hardening is included the results are already in good agreement, which shows the importance of predicting initially active glide systems correctly.

KW - Engineering

M3 - Article in conference proceedings

SN - 978-3-8396-0166-2

SN - 3-8396-0166-5

VL - 5

SP - 447

EP - 450

BT - Fifth International Conference Multiscale Materials Modeling - MMM 2010

PB - Fraunhofer Verlag

T2 - 5th International Conference on Multiscale Materials Modelling - MMM 2010

Y2 - 4 October 2010 through 8 October 2010

ER -