Analysis of the interaction mechanisms in dynamic mode SFM by means of experimental data and computer simulation

1998 ◽  
Vol 66 (7) ◽  
pp. S885-S889 ◽  
Author(s):  
B. Anczykowski ◽  
J.P. Cleveland ◽  
D. Krüger ◽  
V. Elings ◽  
H. Fuchs
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Dynamic Mode ◽  
Interaction Mechanisms

scholarly journals Numerical and experimental investigations of steel-concrete beams with thin-walled section

Vestnik MGSU ◽  
2019 ◽  
pp. 22-32
Author(s):  
Farit S. Zamaliev
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Strain State ◽  
Concrete Beams ◽  
Concrete Structures ◽  
Stress Strain ◽  
Stress Strain State ◽  
Numerical Studies ◽  
Field Samples ◽  
Thin Walled

Introduction. Conducted is to the evaluation of the stress-strain state of the steel-concrete beams with thin-walled section. In recent times, steel-reinforced concrete structures have become widely used in civilian buildings (beams, slabs, columns). Thin-walled section have not found wide application in steel concrete structures, unlike steel structures. Presents the results of numerical studies of beams consisting of concrete, anchors and steel beams. Two investigating of the location of anchors are given. Numerical investigations are presented of steel-concrete beams with thin-walled section based on numerical studies. Testing procedure and test result are given. Results of calculations, comparison of numerical and experimental studies are presented. Materials and methods. For full-scale experiments, steel I-beams with filling of side cavities with concrete were adopted, screws are used as anchor ties, with varied both the lengths and their location (vertically and obliquely). As steel curved C-shaped steel profiles were used steel profiles from the range of the company “Steel Faces”. ANSYS software package was used for computer modeling. A total of 16 steel concrete beams were considered, for which the results of strength and stiffness evaluation were obtained in ANSYS. Results. The data of the stress-strain state of beams on the basis of computer simulation are obtained. The results are used for the production of field samples. Data of computer simulation are compared with the indicators of field experiments. Conclusions. The stress-strain state of steel-concrete structures was studied on the basis of numerical and experimental data. The proposed calculation method gives good convergence with the experimental data. Anchor connections made from self-tapping screws can be used in studies for modeling in steel-concrete beams structures and other anchor devices, ensuring the joint operation of concrete and steel profiles in structures.

Rule of Thumb Modelling of Biofilm Reactors

1990 ◽  
Vol 22 (1-2) ◽  
pp. 405-418 ◽  
Author(s):  
S. Elmaleh
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Complex Systems ◽  
Flow Pattern ◽  
Zero Order ◽  
Design Tool ◽  
Rule Of Thumb ◽  
Biofilm Reactors ◽  
Number Of Species ◽  
Operational Variables

Biofilm reactors are very complex systems, the modelling of which requires sophisticated kinetic relationships concerning the highest number of species in reaction and computer simulation. In fact, the process engineer needs a rule of thumb method able to predict the output variables after modification of the operational variables. Such a “simplissime” model is derived by considering a plate reactor coated with a biofilm through which the substrates are diffusion transported and eliminated with a zero order intrinsic reaction. When the liquid-biofilm resistance is neglected, conversion depends on one parameter only, the meaning of which can be displayed. Moreover, in many cases, the flow pattern influence can be neglected. This “simplissime” model was shown accurate enough in fitting various experimental data and it can even be used as a design tool.

scholarly journals Simulation of Ingotless Rolling-Extruding of Rods from Alloy of Al-Zr System and Investigating into their Properties

2020 ◽  
Vol 837 ◽  
pp. 3-8
Author(s):  
Vadim Bespalov ◽  
Sergey Sidelnikov ◽  
Ruslan Sokolov ◽  
Alexander Chumak ◽  
Denis Voroshilov ◽  
...  
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Computer Simulation ◽  
Software Package ◽  
Processing Parameters ◽  
Process Conditions ◽  
Laboratory Unit ◽  
Deformation Parameters ◽  
3D Software ◽  
Deform 3D

Computer simulation of the process of ingotless rolling-extruding (IRE) of aluminum alloy rods with a content of 0.15% zirconium in the Deform 3D software package performed. The temperature, speed and deformation parameters of the treatment of the investigated alloy determined under different process conditions. To check the adequacy of the models, rod samples were made on a CRE-200 laboratory unit at specified processing parameters. Using the Deform 3D software package, the forces acting on the rolls and the extruding die during the IRE determined and their comparison with tensometric experimental data presented. The mechanical properties, electrical resistivity of semi-finished products after processing by the method of ingotless rolling-extruding and for conditions of their heating to 230 °C investigated. Technological recommendations for the manufacture of deformed semi-finished products using the method of ingotless rolling-extruding are proposed.

Computer Simulation and Optimization, as Exemplified by the Enzyme-Coupled Aminotransferase (Transaminase) Assays

1974 ◽  
Vol 20 (11) ◽  
pp. 1403-1407 ◽  
Author(s):  
Jack W London ◽  
Robert Yarrish ◽  
Leonard D Dzubow ◽  
David Garfinkel
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Myocardial Infarct ◽  
Optimization Procedure ◽  
Reagent Concentration ◽  
Aminotransferase Activity ◽  
Clin Pathol ◽  
Simulation And Optimization ◽  
Computer Methods ◽  
Substrate Concentrations

Abstract We have constructed a computer model, based on experimental data and the known properties of the enzymes involved, of the aspartate aminotransferase and alanine aminotransferase assays by the coupled-enzyme procedure of Henry et al. [Amer. J. Clin. Pathol. 34, 381 (1960)] to assay sera from normal persons and persons with liver disease or myocardial infarct. Observed inhibitions of aminotransferase activity were included in the models. When the computer models are combined with an optimization procedure, substrate concentrations that result in maximum enzyme activity for individual sera are obtained. Aminotransferase activity is not much affected by rather large changes in these concentrations around the optimum. The optimal concentrations we computed are close to those currently accepted. The computer methods involved may be applied to other assays, and factors other than reagent concentration may be optimized.

Interface Dynamics of Melt Instabilities on Semiconductor Surface

2007 ◽  
Vol 129 ◽  
pp. 137-143
Author(s):  
Bogdan Datsko ◽  
Vitaliy Meleshko ◽  
Zbigniew Świątek ◽  
Ivan Mohylyak ◽  
Lidia Lityńska-Dobrzyńska ◽  
...  
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Computer Simulation ◽  
Threshold Power ◽  
Semiconductor Surface ◽  
Surface Dynamics ◽  
Electron Hole ◽  
Interface Dynamics ◽  
Electron Hole Plasma ◽  
Surface Patterns

At uniform excitation of semiconductors by laser radiation with pre-threshold power, locally melted regions are formed on irradiated surfaces. This is induced by thermo diffusive instability of a distribution of uniformly generated electron-hole plasma. The shapes of locally melted regions give rise to a great variety of interesting surface patterns. A mathematical model of the surface dynamics, when the instability of the melt front arises along a chosen wave vector, is proposed. The results of computer simulation of interface dynamics of solitary melted region are compared with experimental data.

scholarly journals Computer Simulation of Amino Acid Oligomerization in Aqueous Solutions Induced by Condensing Agent

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Maxim Lubov ◽  
Yuri Trushin ◽  
Igor Eliseev ◽  
Ivan Terterov ◽  
Michael Dubina
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Amino Acid ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Growth Model ◽  
Physical Features ◽  
Attachment Energy

Physical features of the amino acid oligomerization were studied. Growth model of the L-Glu monomer chain induced by the condensing agent in the aqueous solutions with and without metal ions was proposed. Computer simulation of oligomerization process was conducted and from the comparison of the calculated and experimental data attachment energy of the Leuchs anhydride of L-Glu to the oligomer was estimated.

Computer Simulation of Channeling Profile Analysis of Implantation Damage

1998 ◽  
Vol 532 ◽  
Author(s):  
Matthias Posselt
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Depth Profile ◽  
Profile Analysis ◽  
Binary Collision ◽  
Comparison Of Results ◽  
Implantation Damage ◽  
Good Agreement

ABSTRACTChanneling profile analysis is simulated using the dynamic binary collision code Crystal- TRIM. A good agreement between theoretical and experimental data is found for silicon targets which were predamaged by Si+ ions of different energies and analyzed by 140 keV B+ ions. For each example the depth profile of the defects relevant for the dechanneling of the analyzing ions is given. An estimate of the annealing of such defects is obtained by comparison of results for as-implanted and annealed samples.

scholarly journals Computer Simulation of Volume Shrinkage after Mixing Container Media Components

1993 ◽  
Vol 118 (6) ◽  
pp. 757-761 ◽  
Author(s):  
Silvia Burés ◽  
Franklin A. Pokorny ◽  
David P. Landau ◽  
Alan M. Ferrenberg
Keyword(s):  
Experimental Data ◽  
Computer Simulation ◽  
Particle Size ◽  
Monte Carlo ◽  
Particle Size Distribution ◽  
Experimental System ◽  
Fine Sand ◽  
Spherical Particles ◽  
Particle Sizes ◽  
Coarse Particles

A FORTRAN computer program was developed to simulate packing of spherical particles via a Monte Carlo procedure. Shrinkage in volume upon mixing different particle sizes was studied and simulated results were compared with experimental data. Maximum experimental shrinkage was obtained when the proportion of coarse particles of pine bark and sand mixtures ranged from 50% to 70% of the volume. Experimental shrinkage of a mixture of coarse and fine sand was closely reproduced by means of simulation. Particle size distribution appears to be the most important factor in relation to shrinkage and also in the establishment of relationships between the simulated and the experimental system.

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