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numerical modelling to reproduce fragmentation of a

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[1106.4143] Quantum Zeno-based control mechanism for

Jun 21,2011 numerical modelling to reproduce fragmentation of a#0183;A quantum control mechanism is proposed for molecular fragmentation processes within a scenario grounded on the quantum Zeno effect.In particular,we focus on the van der Waals Ne-Br$_2$ complex,which displays two competing dissociation channels via vibrational and electronic predissociation.Accordingly,realistic three dimensional wave packet simulations are carried out byUpper ocean fine-scale features in synthetic aperture We have been able to reproduce synthetic aperture radar (SAR) signatures of freshwater plumes and sharp frontal interfaces interacting with wind stress,as well as internal waves by combining hydrodynamic simulations with a radar imaging algorithm.The numerical simulations were performed using a non-hydrostatic model,the computational fluid dynamics (CFD) software ANSYS Fluent.Simulation of high velocity concrete fragmentation using L.M.Bresciani,A.Manes,T.A.Romano,P.Iavarone and M.Giglio,Numerical modelling to reproduce fragmentation of a tungsten heavy alloy projectile impacting a ceramic tile Adaptive solid mesh to the SPH technique and the cohesive law,International Journal of Impact Engineering,87,(3),(2016).

Simulation of high velocity concrete fragmentation using

L.M.Bresciani,A.Manes,T.A.Romano,P.Iavarone and M.Giglio,Numerical modelling to reproduce fragmentation of a tungsten heavy alloy projectile impacting a ceramic tile Adaptive solid mesh to the SPH technique and the cohesive law,International Journal of Impact Engineering,87,(3),(2016).Related searches for numerical modelling to reproduce fragexample of fragmentation reproductionfragmentation reproduction methodadvantage of fragmentation reproductionPrevious123456Next(PDF) Numerical Investigation of the Fragmentation Process The numerical model is able to accurately capture all mechanisms,from local damage to disintegration,of the impact-induced fragmentation.Due to local damage and macrocracks,the obtained Related searches for numerical modelling to reproduce fragexample of fragmentation reproductionfragmentation reproduction methodadvantage of fragmentation reproduction12345Next1669.Numerical investigation on rock fragmentation by numerical model for rock.To reproduce rock fragmentation by the cutting head of a roadheader actually,the failure criterion of the rock for J direction was defined as Q numerical modelling to reproduce fragmentation of a#225; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; numerical modelling to reproduce fragmentation of a#223; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; or numerical modelling to reproduce fragmentation of a#225; numerical modelling to reproduce fragmentation of a#225; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; numerical modelling to reproduce fragmentation of a#223;,(5) where A numerical modelling to reproduce fragmentation of a#223; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; is the failure strain of a crack; Q numerical modelling to reproduce fragmentation of a#223; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; is the failure displacement of the crack.The failure

Related searches for numerical modelling to reproduce frag

example of fragmentation reproductionfragmentation reproduction methodadvantage of fragmentation reproductionProviding Innovative Solutions - CertaSIM,LLCto reproduce these key features.It is obvious that numerical ad-hoc eroding of elements and thus removing of mass in the model must be kept to a minimum.The approach used in IMPETUS for modeling fragmentation is the IMPETUS Node Splitting Algorithm,which splits elements along thePhysical and numerical studies of rock fragmentation Jan 01,2018 numerical modelling to reproduce fragmentation of a#0183;Numerical modeling methods give more direct observations compared to physical tests thus it is widely used to study the mechanism of rock fragmentation.A lot of numerical researches have been conducted to study the fracture process in rock cutting.

On the Simulation of Fragmentation During the Process of

SPH models for an alumina ceramic tile impacted by a blunt tungsten heavy alloy projectile are established.SPH simulation results of residual mass and velocity of the projectile as well as ejecta and bulge movements of the ceramic tile are obtained and compared with experimental data and simulation results of other numerical approaches.Numerical simulation of a drop undergoing large amplitude Sep 16,2005 numerical modelling to reproduce fragmentation of a#0183;Direct numerical simulations are conducted for a Newtonian drop in a Newtonian matrix subjected to large amplitude oscillatory shear flows.In the experimental study of Guido et al.(in Rheol Acta 43:575583,2004),the drop shape is found to oscillate at higher harmonics of the forcing frequency when the capillary number is increased.Their phenomenological model requires a much smaller Numerical modelling to reproduce fragmentation of a Jan 01,2016 numerical modelling to reproduce fragmentation of a#0183;Numerical modelling is a useful tool for the preliminary design and the optimisation of ballistic protections and has been increasingly used in recent years for this purpose; however the numerical simulations of large amounts of fragmented parts are an actual challenge for the convergence and consistency of numerical simulations.

Numerical modelling on short delay blast-induced

Numerical modelling on short delay blast-induced fragmentation and vibration Yi,Changping Lule numerical modelling to reproduce fragmentation of a#229; University of Technology,Department of Civil,Environmental and Natural Resources Engineering,Mining and Geotechnical Engineering.Numerical modelling of the effects of joint spacing on Jan 01,2006 numerical modelling to reproduce fragmentation of a#0183;A series of two-dimensional numerical modelling with different joint spacing in a rock mass have been performed to explore the effect of joint spacing on rock fragmentation by a TBM cutter.Results show that the joint spacing can significantly influence the crack initiation and propagation,as well as the fragmentation pattern,and can hence affect the penetration rate of the TBM.Numerical modelling for blast-induced fragmentation in Also numerical models can be used for fragmentation assessment (Yi,et al.,2017),but with few limitations regarding time and cost of computation. Rock fracturing mechanisms by blasting Article

Numerical modeling of the effects of joint orientation on

Mar 01,2005 numerical modelling to reproduce fragmentation of a#0183;In this study,a series of two dimension numerical modeling were performed using the discrete element method (DEM) to explore the effect of joint orientation on rock fragmentation by a TBM cutter.Results show that the joint orientation can significantly influence the crack initiation and propagation as well as the fragmentation pattern,and hence affect the penetration rate of the TBM.Numerical investigation on rock fragmentation by cutting 2.1.Constitutive model of rock.The brittle cracking model was adopted to describe rock macroscopic mechanical characteristics in the numerical model of rock fragmentation by a cutting head,which could simulate the failure and fracture behavior of brittle materials in tension,shear,or combined tension and shear,such as concrete decomposition or rock fragmentation [23].Numerical investigation of fragmentation initiation The numerical results are in good agreement with the tests in sphere fragmentation initiation threshold,inner spall of the sphere,debris cloud pattern.The simulations reproduce the fragmentation initiation threshold curve that is obtained by the tests.

Numerical Modelling of Fracture Propagation and

element modeling of fragmentation,Comput.Mech.,52(5),1071-1084.Paluszny A,Zimmerman RW (2013) Numerical fracture growth modeling using smooth surface geometric deformation,Engineering Fracture Mechanics (available online).Nejati M,Paluszny A,Zimmerman RW (2013) Theoretical and Numerical Modeling of RockNumerical Methods for Modeling Dynamic Fracture ofNumerical Methods for Modeling Dynamic Fracture of Materials .When April 9-10,2018 It will give the participants a common vocabulary and cover the main physics that robust numerical methods ought to reproduce. including dynamic fragmentation and dynamic crack branching instabilities.Modeling the fragmentation of rock grains using computed Corresponding numerical simulations with a simple brittle damage model for the glass successfully reproduce the crack initiation state of the failed glass beads.

Fractal and numerical models of explosive rock fragmentation.

The effect of natural discontinuities on fragmentation is determined by comparing the Schuhmann size distribution curves of the blasted fragments and the in-situ blocks.In-situ block and after blast fragments sizes,measured from photographs,are fractal which is analogous to Schuhmann Distribution.Effect of Water-Decked Blasting on Rock FragmentationFragmentation energy ratio is an important index to evaluate whether an explosive is used efficiently.This paper discusses the effect of water-decked blasting on fragmentation energy based on theory and numerical simulation,and three blasting tests were performed to measure the actual fragmentation energy at a granite-based field.Results show that at the same charge amount,the maximum EODVWLQJXVLQJ'LVFUHWHsimulate the blast loading which capable of modelling thermally non-equilibrium system.This numerical analysis is compared to rock fragment distribution fieldwork data.It shows that DEM-PBM simulation could reproduce the trends observed in fieldwork rock fragment distribution.

Discrete element modeling of toolrock interaction I rock

The numerical results provide evidence that the critical depth of cut d * controlling the failure mode transition is related to the characteristic length = (K Ic c) 2 with K Ic denoting the material toughness and c its unconfined compressive strength.The nature of frictional contact between the cutter face and the rock in the Discrete element modeling of toolrock interaction I rock Okan Su,Numerical Modeling of Cuttability and Shear Behavior of Chisel Picks,Rock Mechanics and Rock Engineering,10.1007/s00603-018-1644-5,(2018).Crossref Mingjing Jiang,Yafeiou Tan,Fuguang Zhang,Ya Sun,Huayang Lei,Distinct element modeling of rock fragmentation by TBM cutter,European Journal of Environmental and Civil Engineering Discrete element modeling of toolrock interaction I rock Okan Su,Numerical Modeling of Cuttability and Shear Behavior of Chisel Picks,Rock Mechanics and Rock Engineering,10.1007/s00603-018-1644-5,(2018).Crossref Mingjing Jiang,Yafeiou Tan,Fuguang Zhang,Ya Sun,Huayang Lei,Distinct element modeling of rock fragmentation by TBM cutter,European Journal of Environmental and Civil Engineering

Coupling continuous damage and debris fragmentation

Regarding numerical modelling,if it is desired to model tural fragmentation process a very interesting application reproduce the strong interactions between the physical ruin modes and to self both initiate and propagate fractures in a full 3D simulation.This is why the rst part of this paper isContinuum modelling of dynamic behaviour and fragmentationApr 14,2005 numerical modelling to reproduce fragmentation of a#0183;Fragmentation plays an important role in a wide variety of industrial processes such as blasting,demolition,crushing,cutting,etc.,in which one desires to cause fragmentation in the most efficient and controlled manner.Nevertheless,a consistent theoretical description of this process isCited by 2Publish Year 2015Author Hongxiang Jiang,Changlong Du,Songyong Liu,Lin Fu,Youhong Tang,Li Ping WangNumerical modelling of the rock fragmentation process by Abstract.The rock fragmentation process by mechanical tools is investigated using numerical method.The rock and tool interaction code (R-T2D) is first developed on the basis of the rock failure process analysis (RFPA) model and the finite element analysis (FEA) method.

Cited by 27Publish Year 2008Author P.Tommasi,P.Campedel,C.Consorti,R.RibacchiNumerical investigation on rock fragmentation by cutting

2.1.Constitutive model of rock.The brittle cracking model was adopted to describe rock macroscopic mechanical characteristics in the numerical model of rock fragmentation by a cutting head,which could simulate the failure and fracture behavior of brittle materials in tension,shear,or combined tension and shear,such as concrete decomposition or rock fragmentation [23].Cited by 14Publish Year 2016Author L.M.Bresciani,A.Manes,T.A.Romano,P.Iavarone,M.GiglioNumerical modeling of the fractured zones around a Jul 01,2020 numerical modelling to reproduce fragmentation of a#0183;Development of a numerical model that can simulate the whole process of blasting from blast detonation and stress waves generation at the borehole boundary to rock fragmentations as well as determining the damping energy decay in the intact material with the propagation of stress waves,may improve the findings of this study.5.ConclusionBehaviour of a oc population during a tidal cycle Different fragmentation functions were shown to signicantly modify model results,except for collision-induced shear stress.In particular,combining oc erosion with binary breakup in the shear fragmentation term enabled us to reproduce bimodal distributions,patterns that are typically observed in

Author A.R.Hajibagherpour,H.Mansouri,M.Bahaaddini,M.BahaaddiniPublish Year 2020A Discontinuous Approach to the Numerical Modelling

with specic strength parameters enables to reproduce block fragmentation within the avalanching mass.Major limits are represented by numerical stability and energy dissipation.Instabil-ity occurs when the strict tolerance on block penetration is exceeded or geometry and position of the elements in the blocky system are not recognized.Analytical and numerical description of the PELE In addition,the acoustic approximation fails to reproduce the jacket fragmentation pattern since the fragmentation length of the jacket is significantly under-predicted.A numerical simulation is also presented using the ANSYS Autodyn 14.0 software.Analytical and numerical description of the PELE In addition,the acoustic approximation fails to reproduce the jacket fragmentation pattern since the fragmentation length of the jacket is significantly under-predicted.A numerical simulation is also presented using the ANSYS Autodyn 14.0 software.

A Discontinuous Approach to the Numerical Modelling

with specic strength parameters enables to reproduce block fragmentation within the avalanching mass.Major limits are represented by numerical stability and energy dissipation.Instabil-ity occurs when the strict tolerance on block penetration is exceeded or geometry and position of the elements in the blocky system are not recognized.1669.Numerical investigation on rock fragmentation by numerical model for rock.To reproduce rock fragmentation by the cutting head of a roadheader actually,the failure criterion of the rock for J direction was defined as Q numerical modelling to reproduce fragmentation of a#225; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; numerical modelling to reproduce fragmentation of a#223; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; or numerical modelling to reproduce fragmentation of a#225; numerical modelling to reproduce fragmentation of a#225; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; numerical modelling to reproduce fragmentation of a#223;,(5) where A numerical modelling to reproduce fragmentation of a#223; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; is the failure strain of a crack; Q numerical modelling to reproduce fragmentation of a#223; numerical modelling to reproduce fragmentation of a#214; numerical modelling to reproduce fragmentation of a#222; is the failure displacement of the crack.The failure(PDF) Numerical Investigation of the Fragmentation Process The numerical model is able to accurately capture all mechanisms,from local damage to disintegration,of the impact-induced fragmentation.Due to local damage and macrocracks,the obtained

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