Efficient and accurate two-scale FE-FFT-based prediction of the effective material behavior of elasto-viscoplastic polycrystals
J Kochmann, S Wulfinghoff, L Ehle, J Mayer… - Computational …, 2018 - Springer
Recently, two-scale FE-FFT-based methods (eg, Spahn et al. in Comput Methods Appl Mech
Eng 268: 871–883, 2014; Kochmann et al. in Comput Methods Appl Mech Eng 305: 89–110 …
Eng 268: 871–883, 2014; Kochmann et al. in Comput Methods Appl Mech Eng 305: 89–110 …
A gradient plasticity grain boundary yield theory
S Wulfinghoff, E Bayerschen, T Böhlke - International Journal of Plasticity, 2013 - Elsevier
A strain gradient crystal plasticity theory is presented that accounts for the resistance of grain
boundaries against plastic flow based on an interface yield condition. This theory …
boundaries against plastic flow based on an interface yield condition. This theory …
[HTML][HTML] A damage growth criterion for anisotropic damage models motivated from micromechanics
S Wulfinghoff, M Fassin, S Reese - International Journal of Solids and …, 2017 - Elsevier
The field of continuum damage mechanics addresses mathematical models for the
degradation of the mechanical properties of engineering materials, in particular for softening …
degradation of the mechanical properties of engineering materials, in particular for softening …
[HTML][HTML] A reduced micromorphic single crystal plasticity model at finite deformations. Application to strain localization and void growth in ductile metals
A micromorphic single crystal plasticity model is formulated at finite deformations as an
extension of Mandel's classical theory based on a multiplicative decomposition of the …
extension of Mandel's classical theory based on a multiplicative decomposition of the …
Gradient crystal plasticity including dislocation-based work-hardening and dislocation transport
S Wulfinghoff, T Böhlke - International Journal of Plasticity, 2015 - Elsevier
This work aims at the formulation of a gradient crystal plasticity model which incorporates
some of the latest developments in continuum dislocation theory and is, at the same time …
some of the latest developments in continuum dislocation theory and is, at the same time …
An efficient solution scheme for small-strain crystal-elasto-viscoplasticity in a dual framework
D Wicht, M Schneider, T Böhlke - Computer Methods in Applied Mechanics …, 2020 - Elsevier
Computational homogenization schemes based on the fast Fourier transform (FFT) enable
studying the effective micromechanical behavior of polycrystalline microstructures with …
studying the effective micromechanical behavior of polycrystalline microstructures with …
Efficient two-scale FE-FFT-based mechanical process simulation of elasto-viscoplastic polycrystals at finite strains
The purpose of this work is the development of an efficient two-scale numerical scheme for
the prediction of the local and overall mechanical behavior of polycrystalline materials with …
the prediction of the local and overall mechanical behavior of polycrystalline materials with …
A thermomechanical finite strain shape memory alloy model and its application to bistable actuators
M Sielenkämper, S Wulfinghoff - Acta Mechanica, 2022 - Springer
This work presents a thermomechanical finite strain shape memory alloy model that utilizes
a projection method to deal with the incompressibility constraint on inelastic strains. Due to …
a projection method to deal with the incompressibility constraint on inelastic strains. Due to …
Dark energy in crystals: prediction of stored energy in polycrystalline aggregates
During the plastic deformation of metallic materials, part of expended mechanical energy
diffuses as heat. The fraction of plastic work converted into heat is called the Taylor–Quinney …
diffuses as heat. The fraction of plastic work converted into heat is called the Taylor–Quinney …
A generalized cohesive zone model and a grain boundary yield criterion for gradient plasticity derived from surface-and interface-related arguments
S Wulfinghoff - International Journal of plasticity, 2017 - Elsevier
In this work, new generalized interface models for gradient plasticity based on the
dislocation density tensor are presented. The first one is a new generalized cohesive zone …
dislocation density tensor are presented. The first one is a new generalized cohesive zone …