Phase-field modeling of porous-ductile fracture in non-linear thermo-elasto-plastic solids

M Dittmann, F Aldakheel, J Schulte, F Schmidt… - Computer Methods in …, 2020 - Elsevier
Phase-field methods to regularize sharp interfaces represent a well established technique
nowadays. In fracture mechanics, recent works have shown the capability of the method for …

Thermo-mechanically coupled gradient-extended damage-plasticity modeling of metallic materials at finite strains

S Felder, N Kopic-Osmanovic, H Holthusen… - International Journal of …, 2022 - Elsevier
For various engineering applications, the analysis and prediction of damage onset and
propagation within ductile materials under thermo-mechanical loading conditions play a …

Coupling effect of strain gradient strengthening and thermal softening on the microscale plastic behavior of metallic materials

Y Liu, H Long, S Zhang, J Song, Q Zhou… - European Journal of …, 2023 - Elsevier
Size effects and thermal effects together determine the microscale plastic response of
metallic structures in high-integrated microelectromechanical systems (MEMS) at different …

Coupled thermomechanical response of gradient plasticity

F Aldakheel, C Miehe - International Journal of Plasticity, 2017 - Elsevier
The coupled thermo-mechanical strain gradient plasticity theory that accounts for micro-
structure based size effects is outlined within this work. This incorporates spatial gradients of …

Sensitivity analysis for transient thermal problems using the complex-variable finite element method

JS Rincon-Tabares, JC Velasquez-Gonzalez… - Applied Sciences, 2022 - mdpi.com
Solving transient heat transfer equations is required to understand the evolution of
temperature and heat flux. This physics is highly dependent on the materials and …

Micromorphic approach for gradient-extended thermo-elastic–plastic solids in the logarithmic strain space

F Aldakheel - Continuum Mechanics and Thermodynamics, 2017 - Springer
The coupled thermo-mechanical strain gradient plasticity theory that accounts for
microstructure-based size effects is outlined within this work. It extends the recent work of …

Thermomechanics of Cosserat medium: modeling adiabatic shear bands in metals

R Russo, S Forest, FA Girot Mata - Continuum Mechanics and …, 2020 - Springer
During most metal manufacturing processes, the medium deforms by generating large
quantities of plastic strain at relatively high strain rates, inevitably inducing rises in …

A thermo-viscoplasticity model for metals over wide temperature ranges-application to case hardening steel

P Oppermann, R Denzer, A Menzel - Computational Mechanics, 2022 - Springer
In this contribution, a model for the thermomechanically coupled behaviour of case
hardening steel is introduced with application to 16MnCr5 (1.7131). The model is based on …

Porous-ductile fracture in thermo-elasto-plastic solids with contact applications

M Krüger, M Dittmann, F Aldakheel, A Härtel… - Computational …, 2020 - Springer
Industrial forming processes depend on several physical effects, including large deformation
thermomechanical damage, localized near the contact zone of the forming tools. The main …

Computational homogenisation for thermoviscoplasticity: application to thermally sprayed coatings

R Berthelsen, R Denzer, P Oppermann… - Computational …, 2017 - Springer
Metal forming processes require wear-resistant tool surfaces in order to ensure a long life
cycle of the expensive tools together with a constant high quality of the produced …