scholarly journals The Capriccio method: a scale bridging approach for polymers extended towards inelasticity

PAMM ◽  
2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Wuyang Zhao ◽  
Sebastian Pfaller
Keyword(s):  
Scale Bridging

scholarly journals Systematic time-scale-bridging molecular dynamics applied to flowing polymer melts

2009 ◽  
Vol 79 (1) ◽  
Author(s):  
Patrick Ilg ◽  
Hans Christian Öttinger ◽  
Martin Kröger
Keyword(s):  
Molecular Dynamics ◽  
Time Scale ◽  
Polymer Melts ◽  
Scale Bridging

scholarly journals Modeling and scale-bridging using machine learning: nanoconfinement effects in porous media

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Nicholas Lubbers ◽  
Animesh Agarwal ◽  
Yu Chen ◽  
Soyoun Son ◽  
Mohamed Mehana ◽  
...  
Keyword(s):  
Machine Learning ◽  
Porous Media ◽  
Scale Bridging

Microstructure characteristics of non-monodisperse quantum dots: on the potential of transmission electron microscopy combined with X-ray diffraction

CrystEngComm ◽  
2020 ◽  
Vol 22 (21) ◽  
pp. 3644-3655
Author(s):  
Stefan Neumann ◽  
Christina Menter ◽  
Ahmed Salaheldin Mahmoud ◽  
Doris Segets ◽  
David Rafaja
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Quantum Dots ◽  
Cdse Quantum Dots ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microstructure Characteristics ◽  
Scale Bridging ◽  
Transmission Electron ◽  
Hot Injection

Capability of TEM and XRD to reveal scale-bridging information about the microstructure of non-monodisperse quantum dots is illustrated on the CdSe quantum dots synthesized using an automated hot-injection method.

Accelerated scale-bridging through adaptive surrogate model evaluation

2018 ◽  
Vol 27 ◽  
pp. 91-106 ◽  
Author(s):  
Kenneth W. Leiter ◽  
Brian C. Barnes ◽  
Richard Becker ◽  
Jaroslaw Knap
Keyword(s):  
Model Evaluation ◽  
Surrogate Model ◽  
Scale Bridging

scholarly journals Towards a scale-bridging description of ferrogels and magnetic elastomers

2015 ◽  
Vol 27 (32) ◽  
pp. 325105 ◽  
Author(s):  
Giorgio Pessot ◽  
Rudolf Weeber ◽  
Christian Holm ◽  
Hartmut Löwen ◽  
Andreas M Menzel
Keyword(s):  
Scale Bridging ◽  
Magnetic Elastomers

Multiscale Modeling of Large Deformation Processes in Polycrystalline Metals

2003 ◽  
Author(s):  
Antoinette Maniatty ◽  
Karel Matous ◽  
Jing Lu
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Grain Structure ◽  
Current Work ◽  
Integration Scheme ◽  
Two Dimensional ◽  
Scale Bridging ◽  
Grain Structures ◽  
Backward Euler ◽  
Bulk Response

A mesoscale model for predicting the evolution of the grain structure and the mechanical response of polycrystalline aggregates subject to large deformations, such as arise in bulk metal forming processes, is presented. The gain structures modeled are either experimentally observed or are computer generated and statistically similar to experimentally observed grain structures. In order to capture the inhomogeneous deformations and the resulting grain structure characteristics, a discretized model at the mesoscale is used. This work focuses on Al-Mg-Si alloys. Scale bridging is used to link to the macroscale. Examples involving two-dimensional grain structures and current work on three-dimensional grain structures are presented. The present work provides a framework to model the mesoscopic behavior and interactions between grains during finite strains. The mesoscale is characterized by a statistically representative voluem element (RVE), which contains the grains of a polycrystal. Experimentally observed grain structures are used both as models directly (for two-dimensional cases) and to define statistical characteristics to verify the similarity of computer generated grain structures (for three-dimensional cases). A Monte Carlo method based on the Potts model is used to define three-dimensional grain structures. In order to make the representative grain structure appropriate for scale-bridging, we design them with periodicity. A three-field, updated Lagrangian finite element formulation with a kinematic split of the deformation gradient into volume preserving and volumetric parts is used to create a stable finite element method in the context of nearly incompressible behavior. A fully implicit two-level backward Euler integration scheme is derived for integrating the constitutive equations, and consistent linearization is used in Newton’s method to solve the resulting equations. In addition, the average of the boundary conditions and bulk response must match the macroscopically measured bulk response. To illustrate and verify the proposed model, we analyze examples involving two-dimensional grain structures and compare with results from a Taylor model. Current work on three-dimensional grain structures ara also presented.

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