Unit
Laboratory for Multiscale Mechanics Modeling
LaboratoryRelated publications (1,000)
Fatigue behavior of transverse attachments under constant and variable amplitude loading from a Swiss motorway bridge
Alain Nussbaumer, Davide Leonetti, Yukina Takai
This paper investigates the fatigue behavior of non-load-carrying transverse welded steel attachments by reporting on an experimental characterization under constant and variable amplitude loading. Fatigue cracks have been monitored using DIC and ACPD tech ...
London2023Strengthening mechanisms in dilute and random solid solution high-entropy BCC alloys
Tuning the mechanical properties of metals, including strength, through adjusting the type and/or concentration of added solute elements, has been recognized as an effective way to design and produce materials with desired or optimized mechanical propertie ...
EPFL2022Deformation twinning mechanism in magnesium at the microscale: strain rate, temperature and orientation effects
The project aims to validate some recent theoretical developments on the deformation twinning nucleation mechanism in HCP metals through small-scale mechanic experiments. To this end, a systematic investigation of the mechanical response of pure magnesium ...
EPFL2022Machine learning for metallurgy IV: A neural network potential for Al-Cu-Mg and Al-Cu-Mg-Zn
William Curtin, Daniel John Gilles Marchand
Most metallurgical properties, e.g., dislocation propagation, precipitate formation, can only be fully understood atomistically but most phenomena and quantities of interest cannot be measured experimentally. Accurate simulation methods are essential but f ...
AMER PHYSICAL SOC2022Understanding the mechanisms of adhesive wear for heterogeneous materials through molecular dynamics simulations
Jean-François Molinari, Antonio Joaquin Garcia Suarez, Sacha Zenon Wattel
Tribology properties emerge from a variety of mechanisms occurring along the sliding surfaces, at dif- ferent length scales and time scales. Engineering friction and wear laws are mostly empirical, fitted against experimental results and thus only valid on ...
2022Understanding the mechanisms of adhesive wear for heterogeneous materials through atomistic simulations
Jean-François Molinari, Antonio Joaquin Garcia Suarez, Sacha Zenon Wattel
When two rough surfaces slide against each other, two main behaviors can be observed at the asperity level: A ductile behavior where the asperities tend to smooth out or a brittle behavior where the asperities detach and form debris. Recently, a critical l ...
ELSEVIER2022Neural Network Potentials for Age Hardening Aluminum Alloys
High-strength metal alloys achieve their performance via careful control of precipitates and solutes.The nucleation, growth, and kinetics of precipitation, and the resulting mechanical properties, are inherently atomic scale phenomena, particularly during ...
EPFL2022Scaling Description of Creep Flow in Amorphous Solids
Matthieu Wyart, Thomas Willem Jan de Geus, Wencheng Ji, Marko Popovic
Amorphous solids such as coffee foam, toothpaste, or mayonnaise display a transient creep flow when a stress E is suddenly imposed. The associated strain rate is commonly found to decay in time as gamma_ -t-nu, followed either by arrest or by a sudden flui ...
AMER PHYSICAL SOC2022Screw vs. edge dislocation strengthening in body-centered-cubic high entrophy alloys and implications for guided alloy design
William Curtin, Francesco Maresca, Carolina Baruffi
Body-centered-cubic (BCC) high entropy alloys (HEAs) can show exceptionally high strength up to high temperatures. Mechanistic theories are needed to guide alloy discovery within the immense multicomponent HEA compositional space. Here, two new theories fo ...
SPRINGER HEIDELBERG2022Insights into hardening, plastically deformed zone and geometrically necessary dislocations of two ion-irradiated FeCrAl(Zr)-ODS ferritic steels: A combined experimental and simulation study
As one of promising candidate materials for fuel claddings and structural components in the Gen-IV fission reactors, FeCrAl(Zr)-ODS ferritic steels were studied to well understand the radiation hardening behavior. Nanoindentation (NI) hardness and plastica ...
2022