Concept

Viscoplasticité

Publications associées (321)

A comparative study of shock capturing models for the discontinuous Galerkin method

Dealing with strong shocks while retaining numerical dissipation of reasonably low level has been one of the major challenges for high order methods like discontinuous Galerkin. In the literature, various shock capturing models have been designed based on ...

Elsevier2017

The dam-break problem for eroding viscoplastic fluids.

Christophe Ancey, Belinda Margaret Bates

Natural gravity-driven flows can increase in volume by eroding the bed on which they descend. This process is called basal entrainment and is thought to play a key role in the bulk dynamics of geophysical flows. Although its study is difficult using field ...

Elsevier2017

Quantification of Viscous Creep Influence on Storage Capacity of Caprock

Lyesse Laloui, Roman Makhnenko, Ludovic Räss

In the light of growing concerns for the climate change, it is of particular interest for governments to encourage efficient capture and safe storage of large amounts of carbon dioxide in the subsurface. In this perspective and in order to accurately predi ...

2017

Critical thickness of GaN on AlN: impact of growth temperature and dislocation density

Nicolas Grandjean, Pirouz Sohi, Denis Martin

Critical thickness and strain relaxation of c-plane GaN layers grown by molecular beam epitaxy on AlN were studied as a function of growth temperature and threading dislocation density (TDD). For this purpose we used AlN/sapphire templates and AlN single c ...

2017

Numerical simulation of mechanical deformation of semi-solid material using a level-set based finite element method

Roland Logé

In this work, a level-set based finite element method was used to numerically evaluate the mechanical behavior in a small deformation range of semi-solid materials with different microstructure configurations. For this purpose, a finite element model of th ...

Institute of Physics2017

Effect of charging/discharging on plasticity and fracture in Si anodes for batteries

Seyed Mostafa Khosrownejad

Lithium-ion batteries provide the power for portable electronics and found many other interesting applications. It is desirable to design batteries with high energy density and long cycle life. Silicon is among the highest Li-storing anode materials in bat ...

EPFL2017

Elevated temperature, micro-compression transient plasticity tests. on nanocrystalline Palladium-Gold: Probing activation parameters at the lower limit of crystallinity

Stefano Mischler, Johann Michler, Xavier Maeder

In this study, we probe the activation parameters and time-dependent plastic behavior of a nano crystalline Palladium-Gold alloy by means of elevated temperature micropillar compression experiments. All tests were conducted on a stable, displacement-contro ...

Pergamon-Elsevier Science Ltd2017

Influence of Lap Splices on the Deformation Capacity of RC Walls. II: Shell Element Simulation and Equivalent Uniaxial Model

Katrin Beyer, João Saraiva Esteves Pacheco de Almeida, Danilo Tarquini

Spliced longitudinal reinforcement may result in a reduction of both strength and displacement capacity of reinforced concrete (RC) members. This applies in particular when lap splices are located in regions where inelastic deformations concentrate, such a ...

Asce-Amer Soc Civil Engineers2017

Stress generation during the quenching of large AA2618 forgings: Finite element computations and validation against neutron diﬀraction measurements

Jean-Marie Drezet, Nicolas Paul Henry Chobaut, Denis Carron

Solutionising and quenching are key steps in the fabrication of heat treatable aluminium parts such as AA2618 compressor impellers for turbochargers. Quenching not only dictates the mechanical characteristics of the product but also induces residual stress ...

Elsevier2017

Characterization of the tensile response of strain hardening UHPFRC - Chillon viaducts

Eugen Brühwiler, Emmanuel Denarié, Lionel Sofia

The tensile response (strength and deformability) of strain hardening UHPFRC needs to be characterized by adequate test and analysis methods. Inverse analysis methods that do not appropriately take into consideration the influence of the UHPFRC softening b ...

RILEM publications S.A.R.L.2017

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