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Pro Model Simulation Example

1.0 Abstract

Describe problem in brief. Method used to solve the problem. Results of your analsis and

conclusion (if any) in brief.

The purpose of this lab experiment is to simulate the pull system of RF door manufacturing &

assembly. First, the current assembly process is modelled to measure the system performance in

terms of utilization, Max & Avg queue lengths, throughput and number of scrap parts. 95% CI

are applied to simulate close to real conditions. Based on model results, only the buffer stations

of white & black skins and the assembly station were 100% utilized with maximum queue of 14

parts and thruput around 519 parts.

2.0 Introduction

Describe clearly and concisely the problem in your own words. Also, present the given

information

2.1 Problem Statement

State the problem clearly along with the objective. Write down assumptions made (if any)

The purpose of this lab is to create a simulation model of a pull system for Real Seatings RF door manufacturing

2.2 Solution Approach

Describe briefly an approach used in solving the problem

The approach used in this lab is to create Kanban system for RF door type. The focus of the

simulation is to model Just in Time processes and to create initial inventory models.

Additionally to figure out the Kanban size for each color black, white, red, and blue.

Describe the use of attributes and Statistical variables in your model.

The model has four attributes to specify color, part type, location and counter. The key

statistical variables used in this model are thruput and utilization

3.0 Flow Chart Flow chart of entity lifecycle (from start to end)

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4.0 Verification

Discuss how you verified your model using the simulation output data produced with one

replication.

The model was verified by the use of animation, creating a flowdiagram and by monitoring

output results such as utliuzation, thruput and scrap count data

5.0 Collection and Analysis of Results

Discuss how problem was solved. Explain how data was collected. Present

relevant data and analyze them.

The simulation model was created for the new pull system for RF door manucturing. The data

was collected on 8 hours warmup, 40 runtime and 10 replications. Below is the utilization results

6.0 Conclusion

Utilization Cutting_RF 64.45 67.44

Utilization Q_RF 16.16 16.99

Utilization NlinBfr_RF_Blu 97.76 100.15

Utilization NlinBfr_RF_Red 99.15 100.22

Utilization NlinBfr_RF_Whi 100 100

Utilization NlinBfr_RF_Blk 100 100

Utilization Assy_RF 100 100

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Write what you conclude using the relevant data.

Based on the data, we can conclude that most operation station utilization was around 100%

except for Cutting RF which was around 65%. Total thruput for 48 hr runtime was around 516

with a 3% scrap rate.

Model schematics

Model text file

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ADD Table of results ISE 167 Lab Assignment Worksheet

Model Output

Parameters

Base Scenario

95% CI LL

95% CI UL

Utilization Cutting_RF 64.45 67.44

Utilization Q_RF 16.16 16.99

Utilization NlinBfr_RF_Blu 97.76 100.15

Utilization NlinBfr_RF_Red 99.15 100.22

Utilization NlinBfr_RF_Whi 100 100

Utilization NlinBfr_RF_Blk 100 100

Utilization Assy_RF 100 100

Max Q_RF contents 13.23 13.97

Average Q_RF contents 7.76 8.16

VS_thruput_RF 514.38 518.82

VS_Scrapcount 14.22 18.38