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Discrete event system simulation 'Project

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Gasser Ahmed

on 26 April 2015

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Transcript of Discrete event system simulation 'Project

Aim and Objectives :
Modified Model :

Discrete Event System (IM521E)

Zahran Group Egypt 'Tefal Production Line'

Prepared By:
AbdulRahman Sami AlSagh
Ahmed El Hefnawy
Gasser Ahmed Salah
Nour Mohammed Shaaban
Salma ElFar

Presented to:
Prof. Khaled El Kilany

Simulation can be defined as an imitation of a real world system, by hand or by using a computer model, to evaluate and improve the system's performance.

Simulation modeling can be used both as an analysis tool for predicting the effect of changes to existing systems and as a design tool to predict the performance of new systems under varying sets of circumstances
Problem definition.
Aim and objectives
Data Collection
Process layout.
Flow process chart.
Process flowchart
ExtendSim Simulation model.
Modified Extendsim Model
Problem Definition :

After tracking down bottlenecks in production lines throughout the manufacturing process, We discovered that the queuing of certain parts cause delay in the flow of the production, therefore a simulation system was needed to be applied.
To make those particular bottleneck sections to perform as fast as possible to improve overall efficiency.
Objectives :
Process Layout :
Flow Process Chart
Main Body Pot
Main Lid
Process Flowchart
ExtendSim Model :
Excel Numerical Data Collection:
Average processing times
Product Items
Processing Readings (Main Body)
Processing readings (Main lid)
Modified Extendsim Model :
ExtendSim Model (Current System) :
Conclusion :
After modeling the simulation we found out that the main bottlenecks were at the automatic screw machine and cutting machine where a lot of queues occur at these two points

Therefore we added two extra machines in both of them ,and reduced the queuing as much as we can to improve the system efficiency and increase the flow of production.
Data Collection from the current working system.
Designing a layout for the manufacturing operations.
Flow process charts to collect an overview of the flow of parts.
Designing a simulation model for the current system on ExtendSim.
Modification to the model to prevent bottlenecks and increase the flow of process.
Thank you for your attention. We'd be glad to answer any questions.
Quick look on Zahran Group
Zahran Group for Household

Leading manufacturer and distributor for small household in Egypt.

Founded in 1967 by M. Zahran.

2 manufacturing facilities and 11 stores across Egypt.

French brand Tefal was introduced to Zahran in 1973.

Has 6 main products; Electronic Appliances, Pressre cookers.

Paid in Capital L.E 250, 000, 000

Exports to different countries around the world.

Has a couple of certificates and awards.
Plotter Discrete Event :
Statistics :
Statistics :
Results :
Output = 12 items
Cycle time = 482.5144 sec
TH = 0.0125 Job/ sec
Auto screw queue length = 46
Cutting edges queue length = 46
Results :
Output = 12 items
Cycle time = 470.399 sec
TH = 0.0125 Job/ sec
Auto screw queue length = 33
Cutting edges queue length = 27

After modification queues before bottlenecks are reduced therefore cycle time is reduced by 2.5 %
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