scholarly journals Manufacturing Capacity Management By Using Modern Simulation Tools

2021 ◽  
Vol 3 (1) ◽  
pp. 129-138
Author(s):  
Marek Krynke
Keyword(s):  
Computer Simulation ◽  
Manufacturing Process ◽  
Input Data ◽  
Capacity Management ◽  
Simulation Software ◽  
Production Flow ◽  
Simulation Tools ◽  
Verification Process ◽  
Account System ◽  
The Impact

Abstract Determining the parameters of the production system as well as the choice of the type of manufactured elements flow shall appoint the level of effectiveness of the manufacturing process. The article presents an example of implementation the simulation verification process of the production flow, taking into account system constraints. The basic stages of developing a simulation model in this process are discussed, taking into account the necessary information and input data. The results show the impact of the application selected flow scenarios on the level of generated costs and the duration of the manufacturing process. The process of assessing individual variants of the organization production was performed on the basis of the results obtained by computer simulation in the FlexSim simulation software.

Analysis of Earthing System Cabinet of Telekom Malaysia

2015 ◽  
Vol 799-800 ◽  
pp. 1249-1256
Author(s):  
David Caulker ◽  
Mohd Annuar Ramli
Keyword(s):  
Computer Simulation ◽  
Simulation Software ◽  
Current Injection ◽  
Soil Conditions ◽  
Soil Resistivity ◽  
Specific Location ◽  
Local Soil ◽  
Local Soil Conditions ◽  
Earthing Systems ◽  
The Impact

This paper investigated the impact on the earthing systems of cabinets of Telekom Malaysia (TM) when subjected to dangerous voltages due to current injection from remote sources. TM have received numerous cases regarding the failures of their cabinets due to power related issues (PRI) as well as lightning. These failures may have occurred partly due to the existing earthing systems installations. This research aims to determine earthing impedance of 5 ohms or less of TM cabinets with respect to local soil conditions. Low impedance earthing is not easy to realize mainly due to the local soil resistivity, layering and structures. To achieve a low impedance of below 5 ohms as per Telekom Malaysia's requirement, three types of earthing electrodes were modelled and simulated using CDEGS computer simulation software. Results have demonstrated that the existing earthing system of 3 rods practice by TM is sufficient for areas of resistivity less than 500ٹ-m. Combination of rectangular and vertical rods for resistivity of 500ٹ-m above is the preferred choice of earthing. Analysis and discussions presented in this study can be used as a guide for TM for their cabinet installations. Results also highlighted that achieving less than 5ٹ does not constitute a safe earthing system. Other parameters have to be taken into account before ascertain which type of earthing to be used in a specific location of a TM installation.

From intrapreneurship to entrepreneurship: Is technical expertise sufficient?‐ A case study

2003 ◽  
Vol 6 (1) ◽  
pp. 57-63
Author(s):  
John E. Woodilla
Keyword(s):  
Computer Simulation ◽  
Computer Modeling ◽  
Manufacturing Process ◽  
September 11 ◽  
Simulation Software ◽  
Technical Expertise ◽  
Successful Career ◽  
Consulting Services ◽  
E Mail

Following a successful career in industry, Dr. Douglas V. Shick, a newly minted entrepreneur, established NRS Associates, LLC, to perform consulting services based on two highly technical computer-modeling programs. Doug was heavily involved in the development of one program, an innovative computer simulation software for modeling a particular manufacturing process, through intrapreneurial activity during his corporate experience. Doug established his business on September 1, 2001, and on September 10 announced his services by e-mail to everyone he knew. The unforeseen events of the next day, September 11, produced some unexpected aftereffects that Doug had to factor into his developing business.

APPLICATION OF COMPUTER SIMULATION IN IMPROVING THE PROCESS OF SCREWS PRODUCTION

2017 ◽  
Vol 66 (0) ◽  
pp. 89-96
Author(s):  
Julia Siderska ◽  
Katarzyna Perkowska
Keyword(s):  
Computer Simulation ◽  
Spatial Arrangement ◽  
Simulation Software ◽  
Production Flow ◽  
Processing Times ◽  
Machine Simulation ◽  
Process Line ◽  
Set Up ◽  
Plant Simulation

The aim of this work is to present and discuss the possibility of using computer simulation to improve the production flow of sheet metal screws in the carpentry plant. The paper includes descriptive and schematic characterization of the present production system of the plant in one of the Polish companies. Using the Tecnomatix Plant Simulation software, a digital model of the process line was drawn up, mirroring the spatial arrangement of workstations in the production hall and their operators, as well as actual processing times and set-up times of each machine. Simulation was performed to identify bottlenecks in the entire production process, and several modifications were proposed on that basis so as to optimize the workloads of the workstations and increase production.

scholarly journals Reliability of technical systems and the methodology for calculating MTBF using Flexsim computer simulation

2019 ◽  
Vol 132 ◽  
pp. 01012
Author(s):  
Maciej Kuboń ◽  
Ireneusz Kaczmar ◽  
Pavol Findura
Keyword(s):  
Computer Simulation ◽  
Simulation Model ◽  
Computer Modeling ◽  
Simulation Software ◽  
Machine Failure ◽  
Machine Reliability ◽  
Technical Systems ◽  
And Performance ◽  
The Impact ◽  
Theoretical Foundations

The paper focuses on computer modeling of the reliability of technical systems using FlexSim simulation software. It presents the theoretical foundations of machine reliability and principles of describing this phenomenon. The discussion demonstrates how to estimate the main parameters of reliability analysis - MTBF and MTTR. The end result was designing a simulation model and assessing the impact of machine failure on the productivity and performance of a technical system.

scholarly journals Scalability analysis of selected structures of a reconfigurable manufacturing system taking into account a reduction in machine tools reliability

2021 ◽  
Vol 23 (2) ◽  
pp. 242-252
Author(s):  
Arkadiusz Gola ◽  
Zbigniew Pastuszak ◽  
Marcin Relich ◽  
Łukasz Sobaszek ◽  
Eryk Szwarc
Keyword(s):  
Manufacturing Process ◽  
Machine Tools ◽  
Manufacturing Systems ◽  
Manufacturing System ◽  
Production Capacity ◽  
Cost Effective ◽  
Simulation Software ◽  
Reconfigurable Manufacturing ◽  
Product Demand ◽  
The Impact

Scalability is a key feature of reconfigurable manufacturing systems (RMS). It enables fast and cost-effective adaptation of their structure to sudden changes in product demand. In principle, it allows to adjust a system's production capacity to match the existing orders. However, scalability can also act as a "safety buffer" to ensure a required minimum level of productivity, even when there is a decline in the reliability of the machines that are part of the machine tool subsystem of a manufacturing system. In this article, we analysed selected functional structures of an RMS under design to see whether they could be expanded should the reliability of machine tools decrease making it impossible to achieve a defined level of productivity. We also investigated the impact of the expansion of the system on its reliability. To identify bottlenecks in the manufacturing process, we ran computer simulations in which the course of the manufacturing process was modelled and simulated for 2-, 3-, 4- and 5-stage RMS structures using Tecnomatix Plant Simulation software.

Investment Casting Design and Processing for Drone’s Micro-Engine Turbine Rotor Manufacturing

2016 ◽  
Vol 246 ◽  
pp. 189-192 ◽  
Author(s):  
Stanisław Roskosz ◽  
Dariusz Szeliga ◽  
Rafał Cygan ◽  
Paweł Rokicki
Keyword(s):  
Computer Simulation ◽  
Rapid Prototyping ◽  
Investment Casting ◽  
Manufacturing Process ◽  
Solidification Process ◽  
Turbine Rotor ◽  
Simulation Software ◽  
Aviation Industry ◽  
Casting Technology ◽  
Casting Design

The research presents methods for modern design and processing tools to be used in manufacturing process of castings in the aviation industry. In the study it is described how to use a computer simulation software and rapid prototyping / rapid tooling methods for manufacturing of drone’s micro-engine turbine rotor. The computer simulation of flow and solidification process and the investment casting technology were applied for manufactured elements.

Multi-Criteria Function for Optimizing the Number of Workers in an E-Maintenance

2013 ◽  
Vol 309 ◽  
pp. 252-259 ◽  
Author(s):  
Radek Havlik ◽  
Alena Gottwaldova ◽  
František Manlig
Keyword(s):  
Computer Simulation ◽  
Manufacturing Process ◽  
Simulation Software ◽  
Service Organizations ◽  
Staff Members ◽  
Maintenance System ◽  
Service Staff ◽  
Optimization Function ◽  
Maintenance Systems ◽  
Dimensional Assessment

This article deals with the procedure during designing the multi-criteria function. The multi-criteria function optimizes the number of workers in an e-maintenance. The basis for defining the multi-criteria function is to gain multi-dimensional assessment knowledge of procedures, and to integrate the procedures into e-maintenance systems. These systems also include an e-maintenance system for staffing optimization. Staffing optimization is necessary as there is direct indirection between service staff members and the customers. This sort of system is intended primarily for service organizations. Service organizations on a larger scale involve more than just machinery and equipment-they involve the manufacturer and the supplier. The key is to design a multi-criterion optimization function for staff members who use special tools or specialists in their field. The ultimate goal is to limit losses and ensure costs are kept to a minimum, or even transfer onto the customer. The verification of the proposed multi-criteria function as a suitable tool for computer simulation in the manufacturing process is done in the simulation program named Witness. The simulation software is linked to MS Excel.

scholarly journals Experimental and Numerical Study of Fracture Behavior of Rock-Like Material Specimens with Single Pre-Set Joint under Dynamic Loading

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2690
Author(s):  
Bo Pan ◽  
Xuguang Wang ◽  
Zhenyang Xu ◽  
Lianjun Guo ◽  
Xuesong Wang
Keyword(s):  
Crack Initiation ◽  
Crack Propagation ◽  
Joint Angle ◽  
Simulation Software ◽  
Dissipated Energy ◽  
Energy Structure ◽  
Joint Angles ◽  
Crack Penetration ◽  
Before And After ◽  
The Impact

The Split Hopkinson Pressure Bar (SHPB) is an apparatus for testing the dynamic stress-strain response of the cement mortar specimen with pre-set joints at different angles to explore the influence of joint attitudes of underground rock engineering on the failure characteristics of rock mass structure. The nuclear magnetic resonance (NMR) has also been used to measure the pore distribution and internal cracks of the specimen before and after the testing. In combination with numerical analysis, the paper systematically discusses the influence of joint angles on the failure mode of rock-like materials from three aspects of energy dissipation, microscopic damage, and stress field characteristics. The result indicates that the impact energy structure of the SHPB is greatly affected by the pre-set joint angle of the specimen. With the joint angle increasing, the proportion of reflected energy moves in fluctuation, while the ratio of transmitted energy to dissipated energy varies from one to the other. NMR analysis reveals the structural variation of the pores in those cement specimens before and after the impact. Crack propagation direction is correlated with pre-set joint angles of the specimens. With the increase of the pre-set joint angles, the crack initiation angle decreases gradually. When the joint angles are around 30°–75°, the specimens develop obvious cracks. The crushing process of the specimens is simulated by LS-DYNA software. It is concluded that the stresses at the crack initiation time are concentrated between 20 and 40 MPa. The instantaneous stress curve first increases and then decreases with crack propagation, peaking at different times under various joint angles; but most of them occur when the crack penetration ratio reaches 80–90%. With the increment of joint angles in specimens through the simulation software, the changing trend of peak stress is consistent with the test results.

scholarly journals Analysis and Optimization of Two Film-Coated Tablet Production Processes by Computer Simulation: A Case Study

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 67
Author(s):  
Stefanie Hering ◽  
Nico Schäuble ◽  
Thomas M. Buck ◽  
Brigitta Loretz ◽  
Thomas Rillmann ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Model Building ◽  
Discrete Event ◽  
Simulation Software ◽  
Labor Costs ◽  
Event Simulation ◽  
Processing Times ◽  
Production Processes ◽  
Coated Tablet ◽  
Pharmaceutical Production

Increasing regulatory demands are forcing the pharmaceutical industry to invest its available resources carefully. This is especially challenging for small- and middle-sized companies. Computer simulation software like FlexSim allows one to explore variations in production processes without the need to interrupt the running process. Here, we applied a discrete-event simulation to two approved film-coated tablet production processes. The simulations were performed with FlexSim (FlexSim Deutschland—Ingenieurbüro für Simulationsdienstleistung Ralf Gruber, Kirchlengern, Germany). Process visualization was done using Cmap Tools (Florida Institute for Human and Machine Cognition, Pensacola, FL, USA), and statistical analysis used MiniTab® (Minitab GmbH, Munich, Germany). The most critical elements identified during model building were the model logic, operating schedule, and processing times. These factors were graphically and statistically verified. To optimize the utilization of employees, three different shift systems were simulated, thereby revealing the advantages of two-shift and one-and-a-half-shift systems compared to a one-shift system. Without the need to interrupt any currently running production processes, we found that changing the shift system could save 50–53% of the campaign duration and 9–14% of the labor costs. In summary, we demonstrated that FlexSim, which is mainly used in logistics, can also be advantageously implemented for modeling and optimizing pharmaceutical production processes.

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