finite deformation of an elastic plastic granular materialmechanically induced amorphization of small molecule
APS -16th APS Topical Conference on Shock Compression of
At oblique impact of metals intensive plastic shear strains and zones of strong heating are growing in neighborhood of contact point. Shear flows with velocity gradient depending on angle and velocity of impact of plates occur for short time. Due to intensive deformation heating in local zones causes significant softening of substance.
Get PriceMaterials Research Express Volume 5 Number 5 May 2018
Simulation results show that the mechanism for amorphization in B 4 C under complex stress conditions is complicated. We take the θ = 30° biaxial compression as an example to explain the complicated deformation process. In the elastic deformation region sudden bending of three-atom chains occurs and results in a stress fluctuation.
Get PriceMaterials Research Express Volume 5 Number 5 May 2018
Simulation results show that the mechanism for amorphization in B 4 C under complex stress conditions is complicated. We take the θ = 30° biaxial compression as an example to explain the complicated deformation process. In the elastic deformation region sudden bending of three-atom chains occurs and results in a stress fluctuation.
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Advanced Functional Materials 2012 Jason A. Burdick Daeyeon Lee et. al "Harnessing Interfacial Phenomena to Program the Release Properties of Hollow Microcapsules"
Get PriceDefect-induced effects in nanomaterialsEMRS
Following a great success of two previous similar symposia (more than 200 submitted abstracts) this symposium addresses the progress in tailoring basicproperties of low-dimensional and nano-materials by introducing dopants (e.g. implantation) or creating growth- and radiation-induced defects. The latest achievements in theory and experiment will be presented and discussed by academic and
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Induced degradation of protein kinases by bifunctional small molecules a next-generation strategy. Expert Opinion on Drug Discovery. 14 1-17. 2019 Labor quality and production technology in provincial China. The Social Science Journal. 56 . 2019
Get PriceIJMS Free Full-Text A Review of Computational Methods
This review discusses several computational methods used on different length and time scales for the simulation of material behavior. First the importance of physical modeling and its relation to computer simulation on multiscales is discussed. Then computational methods used on different scales are shortly reviewed before we focus on the molecular dynamics (MD) method.
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Jan 20 2017 · Another definition for nanotechnology "is the study of the control of matter on an atomic and molecular scale.". 8 8. A. T. S. Wee Selected Topics in Nanoscience and Nanotechnology ( World Scientific Publishing Co. Pte. Ltd. Singapore 2009). Ensembles of nanoparticles can display new and extraordinary properties 9 9.
Get PriceMolecular Mechanistic Origin of the Mechanical Properties
D(nm) Ntot hma x (nm) H (GPa) Deformation and failure mechanism 5 3 265 3.1 24.9 Phase transformation and amorphization 8 13 407 4.9 29.2 Phase transformation and amorphization 10 26 167 6.2 34.1 Phase transformation and Dislocation 20 231 521 12.0 31.45 Phase transformation and Dislocation 30 706 419 18.0 31.0 Phase transformation and
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Advanced small-scale mechanical characterization strength plasticity fracture and fatigue. Information. Program. Thin films coatings welds flexible electronics sensors and MEMS rank among the most critical components made of small volumes of materials used in a variety of applications (automotive energy nuclear microelectronics
Get PriceIon beam induced surface and interface engineering
Mar 01 2011 · The injection of material into a target specimen in the form of an accelerated ion beam offers a most valuable tool for altering its physical chemical structural surface and interface properties in a controlled manner and tailoring new materials for basic
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Jan 01 2001 · In any case the computing of the (elastic) deformation of every discretized point of the roughness is part of the algorithms and can be extracted if this is of special interest. The approximately consideration of micro-plastic flow due to high local normal pressures in the deterministic approach is explained in the paper.
Get PriceNano Letters Vol 7 No 2American Chemical Society
Nano Letters 2007 7 2 (Letter) Publication Date (Web) January 13 2007. Abstract. Full text. PDF. ABSTRACT. The self-limiting reaction of aqueous permanganate with carbon nanofoams produces conformal nanoscopic deposits of birnessite ribbons and amorphous MnO2 throughout the ultraporous carbon structure.
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Sep 15 2007 · In the crystal structures of the ices each H 2 O molecule forms four hydrogen bonds with its four neighbours. Two hydrogen bonds are formed by a molecule donating protons one each to two neighbouring H 2 O molecules and two by accepting protons one each from the other two neighbouring H 2 O molecule .Thus an H 2 O molecule is hydrogen-bonded in a tetrahedral arrangement in the
Get PriceNano Letters Vol 17 No 4American Chemical Society
Raman enhancement on a flat nonmetallic surface has attracted increasing attention ever since the discovery of graphene enhanced Raman scattering. Recently diverse two-dimensional layered materials have been applied as a flat surface for the Raman enhancement attributed to different mechanisms.
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D. Edström D. G. Sangiovanni L. Hultman et al. Elastic properties and plastic deformation of TiC- and VC-based pseudobinary alloys Acta Materialia 144 (2018) abstract B. Dutta F. Körmann T. Hickel et al. Impact of Co and Fe doping on the martensitic transformation and the magnetic properties in Ni-Mn-based Heusler alloys Physica
Get PriceNano Letters Vol 7 No 2American Chemical Society
Nano Letters 2007 7 2 (Letter) Publication Date (Web) January 13 2007. Abstract. Full text. PDF. ABSTRACT. The self-limiting reaction of aqueous permanganate with carbon nanofoams produces conformal nanoscopic deposits of birnessite ribbons and amorphous MnO2 throughout the ultraporous carbon structure.
Get PriceA UNIFIED APPROACH TO FINITE DEFORMATION
an elastic-plastic decomposition of deformation. Green and Naghdi 17 have advocated an additive decomposition of Lagrangian strain E= E" EP (2.2) in terms of elastic and plastic components E" and EP respectively. Such an additive decom-
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May 30 2008 · Szlufarska et al demonstrated that indentation-induced amorphization in zinc-blende silicon carbide takes place by defect-stimulated growth and coalescence of dislocation loops. In simulations by Walsh et al 128 amorphization has been identified as a primary deformation mechanism of silicon nitride.
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This review describes milestone contributions to the field of granular materials since the early elastic-plastic models developed for soils in the 1950s. The research on granular materials has grown into a vast multidisciplinary field in the 1980s with increasing focus on the microstructure and owing to new experimental tools and discrete
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In granular materials or other spatially disordered systems such as colloidal glasses gels and foams in which thermal fluctuations are believed to be negligible a jamming transition has been proposed upon increasing the volume density (or "packing fraction") of particles above a critical value the sudden appearance of a finite shear
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The influence of plastic deformation on the magnetic properties has been studied in FeAl intermetallic compounds with composition between 30 and 40 at. Al. The spontaneous magnetization increases considerably as a result of plastic deformation between 30 and 34 at. Al concentration.
Get PriceOn the kinematics of finite-deformation plasticity
Summary. A theory of finite deformation plasticity is developed which involves a multiplicative decomposition of the deformation gradient through the assumption that there exists a stress-free configuration which can be used to separate the elastic and plastic components of the response.
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Q1.00062 Small Molecule-Guided Thermoresponsive Supramolecular Assemblies Benjamin J. Rancatore Clayton E. Mauldin Jean M.J. Fr e chet Ting Xu. Small organic molecules with strong intermolecular interactions have a wide range of desirable optical and
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Polymers heat treatment is considered one of the most effective methods of modification to widen their application. It was concluded that heat treatment of polyamide improved its tribological properties .Nowadays much attention has been paid to fabricate a kind of absorbing materials to solve the problems of traditional microwave absorbing materials that cannot use at high temperature low
Get PriceNano Letters Vol 14 No 11American Chemical Society
Here we show that for gold nanocrystals bonding in solution can follow two distinct pathways (1) coherent defect-free bonding occurs when two nanocrystals attach with their lattices aligned to within a critical angle and (2) beyond this critical angle defects form at
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