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Granularity - Wikipedia
en.wikipedia.org/wiki/Granularity Private View
Precision and ambiguity. Coarse-grained materials or systems have fewer, larger discrete components than fine-grained materials or systems.. A coarse-grained description of a system regards large subcomponents.; A fine-grained description regards smaller components of which the larger ones are composed.; The concepts granularity, coarseness, and fineness are relative; and are used when ...
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Precision and ambiguity. Coarse-grained materials or systems have fewer, larger discrete components than fine-grained materials or systems.. A coarse-grained description of a system regards large subcomponents.; A fine-grained description regards smaller components of which the larger ones are composed.; The concepts granularity, coarseness, and fineness are relative; and are used when ...
Approaches and Perspective of Coarse-Grained Modeling and Simulation ...
pubs.acs.org/doi/10.1021/acsomega.2c06248 Private View
In CG-MD, one or more monomers/units of the hybrid materials are represented as a coarse-grained bead capable of reproducing parts of the polymer architecture. This leads to the loss of fine-grained atomic details of the system, which are crucial for studying properties and interactions of atom-level structures, but concurrently saves a significant computational cost by speeding up the ...
In CG-MD, one or more monomers/units of the hybrid materials are represented as a coarse-grained bead capable of reproducing parts of the polymer architecture. This leads to the loss of fine-grained atomic details of the system, which are crucial for studying properties and interactions of atom-level structures, but concurrently saves a significant computational cost by speeding up the ...
Coarse Grained Model - an overview | ScienceDirect Topics
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Coarse-grained models. Coarse-grained models are aimed at building simplified representations of complex systems that allow keeping the main chemical/physical peculiarities (such as the interplay between hydrophilic and hydrophobic effects) and performing affordable and meaningful simulations, which could not be feasible with, for example ...
Coarse-grained models. Coarse-grained models are aimed at building simplified representations of complex systems that allow keeping the main chemical/physical peculiarities (such as the interplay between hydrophilic and hydrophobic effects) and performing affordable and meaningful simulations, which could not be feasible with, for example ...
Bottom-up Coarse-Graining: Principles and Perspectives
pubs.acs.org/doi/10.1021/acs.jctc.2c00643 Private View
Below, we briefly describe these essential steps required for bottom-up CG modeling and discuss how they are related to the aforementioned challenges. 2-1. Coarse-Grained Mapping. The process of applying a CG mapping reduces the high-dimensional atomistic phase space to a low-dimensional CG phase space.
Below, we briefly describe these essential steps required for bottom-up CG modeling and discuss how they are related to the aforementioned challenges. 2-1. Coarse-Grained Mapping. The process of applying a CG mapping reduces the high-dimensional atomistic phase space to a low-dimensional CG phase space.
Bottom-up Coarse-Graining: Principles and Perspectives - ACS Publications
pubs.acs.org/doi/pdf/10.1021/acs.jctc.2c00643 Private View
driving the properties of real world materials and complex systems (e.g., those found in biology, chemistry, and materials science). As a ... such as moving from an atomistic simulation to that of the resolution of large coarse-grained (CG) groups of atoms, can partially ameliorate the cost of individual simulations, the relationship between ...
driving the properties of real world materials and complex systems (e.g., those found in biology, chemistry, and materials science). As a ... such as moving from an atomistic simulation to that of the resolution of large coarse-grained (CG) groups of atoms, can partially ameliorate the cost of individual simulations, the relationship between ...
Mesoscopic and multiscale modelling in materials - Nature
www.nature.com/articles/s41563-020-00913-0 Private View
Upscaling methods, which link discrete scales (electronic structure, atomistic, coarse-grained atomistic), continuum scales (material constituents and component scales) or combinations of the two ...
Upscaling methods, which link discrete scales (electronic structure, atomistic, coarse-grained atomistic), continuum scales (material constituents and component scales) or combinations of the two ...
Ultrafine-Grained Materials | SpringerLink
link.springer.com/chapter/10.1007/978-3-030-80359-9_17 Private View
The common grain size of the metals in the industry is >10 μm and are called coarse-grained materials [ 16 ]. Fine-grained metals that are processed using industrial thermomechanical processing have a grain size of ∼1–10 μm. It is hard to achieve a metal with grain size <1 μm (called ultrafine grained) or <100 nm (called nanograined ...
The common grain size of the metals in the industry is >10 μm and are called coarse-grained materials [ 16 ]. Fine-grained metals that are processed using industrial thermomechanical processing have a grain size of ∼1–10 μm. It is hard to achieve a metal with grain size <1 μm (called ultrafine grained) or <100 nm (called nanograined ...
Coarse-grained models - Latest research and news | Nature
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Coarse-grained models are computational models that mimic the behaviour of a complex system by breaking it down into simpler sub-components. ... Revealing process and material parameter effects on ...
Coarse-grained models are computational models that mimic the behaviour of a complex system by breaking it down into simpler sub-components. ... Revealing process and material parameter effects on ...
Constitutive Modeling of Coarse-Grained Materials Incorporating the ...
ascelibrary.org/doi/10.1061/(ASCE)GM.1943-5622.0000759 Private View
Coarse-grained materials (CGMs), including gravel, ballast, and rockfill material, exhibit a complicated stress-strain-volume change behavior, which is state dependent and influenced by considerable particle breakage even under relatively low pressure. A generalized plasticity model with a multiaxial formulation is developed for CGMs based on ...
Coarse-grained materials (CGMs), including gravel, ballast, and rockfill material, exhibit a complicated stress-strain-volume change behavior, which is state dependent and influenced by considerable particle breakage even under relatively low pressure. A generalized plasticity model with a multiaxial formulation is developed for CGMs based on ...
Coarse-graining strategies for predicting properties of ... - Springer
link.springer.com/article/10.1557/s43578-021-00332-0 Private View
The ability of atomistic and coarse-grained models to discern between two polymers of very similar architecture is examined. To this end, polyether ether ketone (PEEK) and polyether ketone ketone (PEKK) are chosen. The difference in glass transition temperature and the similarity in compressive responses of the two polymers are captured by all-atom models. A coarse-graining scheme, with 6 ...
The ability of atomistic and coarse-grained models to discern between two polymers of very similar architecture is examined. To this end, polyether ether ketone (PEEK) and polyether ketone ketone (PEKK) are chosen. The difference in glass transition temperature and the similarity in compressive responses of the two polymers are captured by all-atom models. A coarse-graining scheme, with 6 ...
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A state-dependent bounding surface model of coarse-grained materials ...
www.sciencedirect.com/science/article/pii/S0266352X2400123X Private View
It should be noted that the GSD of coarse-grained materials is always changed with particle breakage. This phenomenon is unavoidable for rockfill materials when the consolidation pressure reaches 1.5 MPa, as mentioned in section 3.1. Once crushing, granular material behaviors would be dominated by not only initial GSD but also GSD evolution.
It should be noted that the GSD of coarse-grained materials is always changed with particle breakage. This phenomenon is unavoidable for rockfill materials when the consolidation pressure reaches 1.5 MPa, as mentioned in section 3.1. Once crushing, granular material behaviors would be dominated by not only initial GSD but also GSD evolution.
Understanding dynamics in coarse-grained models. II. Coarse-grained ...
pubs.aip.org/.../034104/2871086/Understanding-dynamics-in-coarse-grained-models-II Private View
Coarse-grained (CG) models facilitate efficient computational studies compared to conventional atomistic, or fine-grained (FG), simulations. 1–10 By averaging away the presumed unimportant degrees of freedom, CG simulations can explore much larger spatiotemporal scales of the molecular systems of interest. Among various CG approaches, bottom-up CG models are designed to approximate the many ...
Coarse-grained (CG) models facilitate efficient computational studies compared to conventional atomistic, or fine-grained (FG), simulations. 1–10 By averaging away the presumed unimportant degrees of freedom, CG simulations can explore much larger spatiotemporal scales of the molecular systems of interest. Among various CG approaches, bottom-up CG models are designed to approximate the many ...
Ultrasonic signal enhancement for coarse grain materials by machine ...
www.sciencedirect.com/science/article/abs/pii/S0041624X21001773 Private View
When a coarse-grained material is detected by ultrasonic testing (UT), flaw echoes will probably be submerged in noise background resulting from grain scattering of ultrasonic, that is, grain noise. Since the amplitude of scattering noise can be comparable to the defect echoes, it makes defect detection for such materials difficult by evaluating ultrasonic time domain amplitude.
When a coarse-grained material is detected by ultrasonic testing (UT), flaw echoes will probably be submerged in noise background resulting from grain scattering of ultrasonic, that is, grain noise. Since the amplitude of scattering noise can be comparable to the defect echoes, it makes defect detection for such materials difficult by evaluating ultrasonic time domain amplitude.
(PDF) Geotechnical Characterisation of Coarse-Grained ... - ResearchGate
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Coarse-grained materials in engineering projects can . contain pa rticle sizes greater th an 175 mm. Approaches . for evaluating the shear strength and behaviour of coarse-
Coarse-grained materials in engineering projects can . contain pa rticle sizes greater th an 175 mm. Approaches . for evaluating the shear strength and behaviour of coarse-
Differences Between Coarse-Grained and Fine-Grained Soil
theconstructor.org/geotechnical/coarse-fine-grained-soil/26299 Private View
Coarse-grained soils have 50% or less material passing the No. 200 sieve. Fine-grained soils have 50% or more material passing the No. 200 sieve. Engineering properties such as strength and compressibility of coarse-grained soil are governed by the grain-size of the particles and their structural arrangement.
Coarse-grained soils have 50% or less material passing the No. 200 sieve. Fine-grained soils have 50% or more material passing the No. 200 sieve. Engineering properties such as strength and compressibility of coarse-grained soil are governed by the grain-size of the particles and their structural arrangement.
Soil classification - Wikipedia
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The most common engineering classification system for soils in North America is the Unified Soil Classification System (USCS). The USCS has three major classification groups: (1) coarse-grained soils (e.g. sands and gravels ); (2) fine-grained soils (e.g. silts and clays ); and (3) highly organic soils (referred to as "peat").
The most common engineering classification system for soils in North America is the Unified Soil Classification System (USCS). The USCS has three major classification groups: (1) coarse-grained soils (e.g. sands and gravels ); (2) fine-grained soils (e.g. silts and clays ); and (3) highly organic soils (referred to as "peat").
Coarse-Grained Modeling of Ion-Containing Polymers
pubs.acs.org/doi/10.1021/acs.chemrev.1c00913 Private View
Coarse-grained modeling provides an efficient approach for exploring the structural and dynamical properties of these soft materials. The unique physicochemical properties of such polymers are of broad interest. In this review, we summarize the current development and understanding of the structure–property relationship of ion-containing ...
Coarse-grained modeling provides an efficient approach for exploring the structural and dynamical properties of these soft materials. The unique physicochemical properties of such polymers are of broad interest. In this review, we summarize the current development and understanding of the structure–property relationship of ion-containing ...
Mechanical Modeling of Frozen Coarse-Grained Materials ... - Hindawi
www.hindawi.com/journals/amse/2021/6639428 Private View
In the cold regions of China, coarse-grained materials are frequently encountered or used as backfilling materials in infrastructure construction, such as dams, highways, railways, and mineral engineering structures. Effects of confining pressure (0.2, 0.5, and 1 MPa) and frozen temperature (−2, −5, −10, and −15°C) on the stress-strain response and elastic modulus were ...
In the cold regions of China, coarse-grained materials are frequently encountered or used as backfilling materials in infrastructure construction, such as dams, highways, railways, and mineral engineering structures. Effects of confining pressure (0.2, 0.5, and 1 MPa) and frozen temperature (−2, −5, −10, and −15°C) on the stress-strain response and elastic modulus were ...
Detection and Separation of Close Flaws in Coarse-Grained Materials ...
link.springer.com/article/10.1007/s10921-022-00900-2 Private View
In coarse-grained materials, the ultrasonic signatures of the structural noise and possible defects have the same frequency bandwidth so that the structural noise can be modeled in the object to be reconstructed. Thus, the tuning of the hyperparameters is critical and directly determines the intensity level below which the signals are ...
In coarse-grained materials, the ultrasonic signatures of the structural noise and possible defects have the same frequency bandwidth so that the structural noise can be modeled in the object to be reconstructed. Thus, the tuning of the hyperparameters is critical and directly determines the intensity level below which the signals are ...
Effects of coarse-grained material on hydraulic properties and shear ...
www.sciencedirect.com/science/article/pii/S0013795208001257 Private View
After some trial mixes, Indrawan et al. (2006) showed that permeability of soil mixtures started to increase when mixed with more than 50% coarse-grained materials. Similar results have also been observed by other researchers (e.g., Shakoor and Cook (1990) and Shelley and Daniel (1993) .
After some trial mixes, Indrawan et al. (2006) showed that permeability of soil mixtures started to increase when mixed with more than 50% coarse-grained materials. Similar results have also been observed by other researchers (e.g., Shakoor and Cook (1990) and Shelley and Daniel (1993) .