A numerical simulation of fabric development in polycrystalline aggregates with one slip system

1995 ◽  
Vol 32 (2) ◽  
pp. A60
Keyword(s):  
Numerical Simulation ◽  
Slip System ◽  
Polycrystalline Aggregates

Linking Meso- and Macroscale Simulations: Crystal Plasticity of hcp Metals and Plastic Potentials

2007 ◽  
Vol 539-543 ◽  
pp. 1741-1746
Author(s):  
Dirk Steglich ◽  
Stéphane Graff ◽  
Wolfgang Brocks
Keyword(s):  
Slip System ◽  
Single Crystals ◽  
Crystal Plasticity ◽  
Yield Function ◽  
Crystal Plasticity Model ◽  
Plastic Deformation Behavior ◽  
Polycrystalline Aggregates ◽  
Tension Compression Asymmetry ◽  
Rolled Plates

A crystal plasticity model has been used to simulate channel die experiments on both, pure magnesium single crystals and polycrystalline textured rolled plates. Deformation mechanisms and slip system activity can be identified by FE-analyses of single crystals. The role of twinning can be understood and modeled phenomenologically by an additional slip system. Simulations of polycrystalline aggregates are used to obtain a representation of the material's phenomenological yield function in order to describe the plastic deformation behavior using the framework of continuum mechanics. This allows for accounting for the specific texture and thus for its optimization. The tension- compression asymmetry, which is typical for mechanically processed magnesium material, can be reproduced by means of the crystal plasticity and a phenomenological model.

scholarly journals Proper Generalized Decomposition (PGD) for the numerical simulation of polycrystalline aggregates under cyclic loading

2018 ◽  
Vol 346 (2) ◽  
pp. 132-151 ◽  
Author(s):  
Mohamed Aziz Nasri ◽  
Camille Robert ◽  
Amine Ammar ◽  
Saber El Arem ◽  
Franck Morel
Keyword(s):  
Numerical Simulation ◽  
Cyclic Loading ◽  
Proper Generalized Decomposition ◽  
Polycrystalline Aggregates

In situ Tensile Experiments at Low Temperatures on Niobium Single Crystals by H.V.E.M.

1975 ◽  
Vol 33 ◽  
pp. 58-59
Author(s):  
F. H. Louchet ◽  
L. P. Kubin
Keyword(s):  
Electron Microscope ◽  
Transition Temperature ◽  
Low Temperature ◽  
Slip System ◽  
Low Temperatures ◽  
Tensile Axis ◽  
Image Intensifier ◽  
Screw Dislocations ◽  
Source Operation

Experiments have been carried out on the 3 MeV electron microscope in Toulouse. The low temperature straining holder has been previously described Images given by an image intensifier are recorded on magnetic tape.The microtensile niobium samples are cut in a plane with the two operative slip directions [111] and lying in the foil plane. The tensile axis is near [011].Our results concern:- The transition temperature of niobium near 220 K: at this temperature and below an increasing difference appears between the mobilities of the screw and edge portions of dislocations loops. Source operation and interactions between screw dislocations of different slip system have been recorded.

Water uptake by substituted amylose tablets: experimentation and numerical simulation

2009 ◽  
Vol 00 (00) ◽  
pp. 090904073309027-8
Author(s):  
H.W. Wang ◽  
S. Kyriacos ◽  
L. Cartilier
Keyword(s):  
Numerical Simulation ◽  
Water Uptake
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