An integrated approach to computer simulation of casting processes

1995 ◽  
Author(s):  
J. Rawlinson
Keyword(s):  
Computer Simulation ◽  
Integrated Approach ◽  
Simulation Of Casting Processes

scholarly journals USING COMPUTER SIMULATION TO AID THE RESERCH OF DRILLING PROCESSES

2019 ◽  
pp. 13-19
Author(s):  
Marina S. Popova ◽  
Anton Y. Kharitonov ◽  
Sergey N. Parfenyuk
Keyword(s):  
Computer Simulation ◽  
Cutting Tool ◽  
Mineral Exploration ◽  
Integrated Approach ◽  
Rock Cutting ◽  
Drilling Process ◽  
Primary Methods ◽  
Drilling Tool ◽  
Software Products ◽  
Advantages And Disadvantages

Drilling wells is one of the primary methods used for mineral exploration. Scientific studies have aimed at improving the technical and economic aspects of drilling because of the current competitive economic conditions. Note that the primary topic of these studies has been developing new effective rock-cutting tools. To design a new rock-cutting tool, a thorough, reliable, and accurate study of the processes that occur during drilling is necessary. During drilling, mechanical, hydraulic, thermal, and chemical phenomena, which are interdependent and affect the performance of a drilling tool, simultaneously occur; therefore, a systematic, integrated approach is required for studying drilling processes. Field-based and laboratory experiments are quite tedious to perform and require high material costs, and it is often not possible to separately evaluate small elements of the drilling model. Therefore, computer simulation is an important research tool that enables accurate and reliable visualization of even small parts of the model. The aim. The aim of this study is to examine the potential for computer simulation of the processes that occur during drilling. Objective. In this study, we evaluated the simulation features of various software products, such as KOMPAS-3D, ANSYS, Delphi, and LabVIEW, for their utility in studying the processes that occur during drilling. The possibility of computer simulation for studying drilling processes, including its advantages and disadvantages, are demonstrated. The results are obtained from a model that simulates a rock cutting tool. The main uses of the rock cutting tool are outlined, and the drilling simulation development is planned. Choice of research method. The study of the capabilities of existing modern software products, for use in drilling process research, is carried out by an analytical review method.

scholarly journals Expediemcy of using a comprehensive approach in the identification of missing persons

2019 ◽  
pp. 10-14
Author(s):  
V. V. Voichenko ◽  
G. G. Roshchin ◽  
O. O. Dyadyk ◽  
I. V. Irkin ◽  
O. Yu. Petrochak ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Molecular Genetics ◽  
Armed Conflict ◽  
Molecular Genetic ◽  
Integrated Approach ◽  
Simulation Method ◽  
Medical Examination ◽  
Mass Casualties ◽  
Missing Persons ◽  
Medical Examinations

The identification of missing persons in armed conflict and with mass casualties in emergencies has its own characteristics and requires an integrated approach to increase accuracy and objectivity. The aim of the study justification of the appropriateness of an integrated approach in identifying persons missing in an armed conflict with mass casualties. In the work, archival materials of forensic medical examinations of the commemorative institution “Dnipropetrovsk Regional Bureau of Forensic Medical Examination” were used regarding those who died during the armed conflict with mass casualties in eastern Ukraine during 2014-2019. Research methods: anthropometric, morphometric, photographic, radiological, forensic methods, computer simulation method, molecular genetic, statistic. The article sets out the domestic experience of increasing the objectivity and accuracy of identifying missing persons and determining the characteristics of bodily injuries and traumatic factors through an integrated approach using anthropometric, morphometric, photographic, radiological, molecular genetics and medical and criminalistics methods and in situations of armed conflict with mass casualties. However, the presence of only a modern morgue and the latest equipment in the laboratory department of the forensic medical examination bureau is not a guarantee of a successful examination to identify the deceased. As the experience of different countries in the case of mass natural and man-made disasters shows – the key element is the correct and consistent organization of research. The experience of conducting identification studies in Ukraine of missing persons in an armed conflict with mass casualties of people indicates the appropriateness of applying an integrated approach that improves the objectivity and accuracy of the study.

Human Factors Simulation to Support Software Design

1987 ◽  
Vol 31 (12) ◽  
pp. 1416-1420
Author(s):  
Kevin R. Gutekunst ◽  
Richard J. Cruise
Keyword(s):  
Computer Simulation ◽  
Software Design ◽  
Cost Effective ◽  
Integrated Approach ◽  
Computer Interface ◽  
Human Engineering ◽  
Software Interface ◽  
Trade Offs ◽  
Cost Effective Method ◽  
Support Software

Computer simulation of the operator/system interface is a useful tool for supporting system software design. Simulation is also a flexible and cost effective method for applying human engineering analysis techniques as required by MIL-H-46855 (Human Engineering Requirements for Military Systems, Equipment and Facilities). This paper describes the integrated methodology used to model the operator/computer interaction for a newly developed military system. The operator/computer interface was potentially complex since the operators were required to control several sensors as well as communicate intelligence information within specified time constraints. In order to focus the design process and optimize the operator/computer interface, a computer simulation using the Micro SAINT software package was performed. This simulation provided a dynamic and integrated approach for performing subsequent design trade offs and developing software interface specifications and requirements.

scholarly journals MATHEMATICAL DESIGN OF POLYCOMPONENT DRINKS WITH A BALANCED NUTRIENT COMPOSITION

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Liubov Telezhenko ◽  
Nadya Dzyuba ◽  
Antonina Іеgorova ◽  
Yevgeniia Balandina
Keyword(s):  
Computer Simulation ◽  
Computer Aided Design ◽  
Unsaturated Fatty Acids ◽  
Raw Materials ◽  
Nutrient Content ◽  
Integrated Approach ◽  
Glass Container ◽  
Storage Conditions ◽  
Microbiological Parameters ◽  
Excel Solver

Based on the principles of food combinatorics using the methods of mathematical and computer simulation, formulations of polycomponent drinks based on dairy and vegetable raw materials were developed. The drinks were cow's milk, bananas, spinach and pumpkin were used as plant material and chia seeds were used as a source of unsaturated fatty acids. Using mathematical planning, the criterion equations for beverages characterizing the maximum content of basic nutrients have been formed. Computer simulation of beverage recipes was performed in Excel Solver in a Microsoft Excel spreadsheet, which formalized qualitative and quantitative indicators of balanced nutrients. In computer-aided design, optimization for each selected indicator was used by paired with the recommended nutrient content of FAO / WHO. Formulations of pumpkin, spinach and banana beverages were obtained in which the content of basic nutrients was 18,889 g, 17,664 g and 21,329 g per 100 g, respectively. Analysis of the chemical composition showed that the ratio of proteins: fats: carbohydrates is 1: 1.45: 3.03 for the drink "Pumpkin", 1: 1.34: 2.57 for the drink "Spinach" and 1: 1.5: 4 , 27 for the Banana drink. The ALST method determines the storage conditions of developed beverages, taking into account changes in sensory and microbiological parameters. Determination of optimal storage conditions by estimation of changes in organoleptic parameters makes it possible to state that the developed beverages will be competitive in the establishments of the restaurant industry of Ukraine. A study of changes in the microbiota of finished beverages within 4 hours at (4 ± 2) ° C in a closed glass container showed that, in the presence of conditionally pathogenic microorganisms, the beverages meet the current regulatory requirements. The integrated approach to the production of multicomponent beverages can be used by any market operator to produce not only beverages but also various food products.

Supplier selection in closed loop supply chain by an integrated simulation-Taguchi-DEA approach

2016 ◽  
Vol 29 (3) ◽  
pp. 302-326 ◽  
Author(s):  
Ali Azadeh ◽  
Mansour Zarrin ◽  
Nima Salehi
Keyword(s):  
Computer Simulation ◽  
Supply Chain ◽  
Taguchi Method ◽  
Supplier Selection ◽  
Closed Loop ◽  
Integrated Approach ◽  
High Quality ◽  
Quality Cost ◽  
Closed Loop Supply Chain ◽  
Content Type

Purpose – Reverse logistics refer to processes related to the reuse of products. The role of suppliers’ performance is crucial in achieving quality, cost, service and delivery aims of a supply chain. The selection of suppliers is regarded as one of the critical issues encountered by purchasing and operations managers in a supply chain to enhance organization’s global marketplace competitiveness. Most of the supply chain models are rather complex problems. Consequently, it is impossible to propose systematic models to handle them. Therefore, in this paper a new integrated approach based on experimental design and computer simulation is proposed for supplier selection. The paper aims to discuss these issues. Design/methodology/approach – In this study, a simulation approach is implemented to determine certain equivalent of parameters values in a CLSC network design which cannot be computed through mathematical model. Suppliers’ order quantities are investigated by Taguchi method for planning time horizon. Moreover, data envelopment analysis (DEA) is applied to assess suppliers based on quality, cost, delivery time, production capabilities, services and technology. Findings – In the numerical example, there are three suppliers for different regions. Purchase value of each supplier is measured in three years successively. According to the proposed method, the authors find the minimum level of costs together with the maximum number of high-quality products. Practical implications – The objective functions of model are minimizing the costs and maximizing number of high-quality products. The integrated approach introduced in this paper enables managers to select their suppliers effectively in their real system. Originality/value – Most supply chain models are complex and the identification of proper and optimal solutions in complex real-world systems often requires the solution of multi-objective problems involving multiple stochastic variables. Therefore, the paper introduces a new integrated approach for supplier selection in closed loop supply chain. To the best of the authors knowledge, this is the first study that integrates DEA, computer simulation and Taguchi method for supplier selection in closed loop supply chains.

Characterization of Modulated Structure Through Structure Images and their Computer Simulation

1990 ◽  
Vol 48 (1) ◽  
pp. 70-71
Author(s):  
Kiyomichi Nakai ◽  
Yusuke Isobe ◽  
Chiken Kinoshita ◽  
Kazutoshi Shinohara
Keyword(s):  
Computer Simulation ◽  
High Resolution ◽  
Spherical Aberration ◽  
High Resolution Electron Microscopy ◽  
Basic Mechanism ◽  
Objective Lens ◽  
Specimen Thickness ◽  
Transmitted Beam ◽  
Modulated Structure ◽  
Resolution Electron

Induced spinodal decomposition under electron irradiation in a Ni-Au alloy has been investigated with respect to its basic mechanism and confirmed to be caused by the relaxation of coherent strain associated with modulated structure. Modulation of white-dots on structure images of modulated structure due to high-resolution electron microscopy is reduced with irradiation. In this paper the atom arrangement of the modulated structure is confirmed with computer simulation on the structure images, and the relaxation of the coherent strain is concluded to be due to the reduction of phase-modulation.Structure images of three-dimensional modulated structure along <100> were taken with the JEM-4000EX high-resolution electron microscope at the HVEM Laboratory, Kyushu University. The transmitted beam and four 200 reflections with their satellites from the modulated structure in an fee Ni-30.0at%Au alloy under illumination of 400keV electrons were used for the structure images under a condition of the spherical aberration constant of the objective lens, Cs = 1mm, the divergence of the beam, α = 3 × 10-4 rad, underfocus, Δf ≃ -50nm and specimen thickness, t ≃ 15nm. The CIHRTEM code was used for the simulation of the structure image.

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