simulation of job shop using arena - mini project ppt
DESCRIPTION
Mini Project PPT.."Simulation of Job Shop using Arena"TRANSCRIPT
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KAILAS SREE CHANDRAN M100447ME
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A Job Shop producing 3 types of Gears; G1, G2, G3.
Job Shop consists of o Arrival Dock
o Milling Workstation
o Drilling Workstation
o Paint Shop
o Polishing Area
o Shop Exit
Gear Jobs arrive in batches of 10 units. Their inter-arrival times are uniformly distributed between 400 and 600 minutes.
Of arriving batches, 50% are G1, 30% are G2, 20% are G3.
Each gear type has different operation sequence.
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Gears are transported by Two trucks running at a constant speed of 100 feet/minute.
Each truck can carry only one gear at a time.
Transport Procedure: ◦ The Transport starts from Arrival Dock
◦ When a job is complete at a location, the gear is placed into an output buffer.
◦ A transport request is made for a truck, and the gear waits for the truck to arrive.
◦ Among the two trucks, the preference will be for the one which is closest to the requested location.
◦ The transported job is placed in the input buffer of next station.
◦ After all operations, the finished gear departs from the job shop via the Shop Exit.
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ARRIVAL DOCK
MILLING
WORKSTATION
DRILLING
WORKSTATION
PAINTING SHOP
POLISHING AREA
SHOP EXIT
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FOUR Milling Machines
THREE Drilling Machines ONE Worker
TWO Spray Booths
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GEAR TYPE OPERATION SEQUENCES PROCESSING TIME(Minutes)
G1
Milling 35
Drilling 20
Painting 55
Polishing 15
G2
Milling 25
Painting 35
Polishing 15
G3
Drilling 18
Painting 35
Polishing 15
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ARRIVAL DOCK
MILLING
WORKSTATION
DRILLING
WORKSTATION
PAINTING SHOP
POLISHING AREA
SHOP EXIT
G1
G2
G3 7
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Arrival
Dock
Milling
Station
Drilling
Station
Paint
Shop
Polishing
Area Shop Exit
Arrival
Dock 100 100 250 250 550 Milling
Station 100 300 400 150 300 Drilling
Station 100 300 150 400 500
Paint Shop 250 400 150 300 400 Polishing
Area 250 150 400 300 200
Shop Exit 550 300 500 400 200 8
FROM TO
Units in feet
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Transporter(Truck) speed is same for both loaded and empty.
The freed transporter stays at the destination station until requested by another station.
The Job Shop works for 24 hours a day in 3 shifts at 8 hours each.
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Gear Job Arrivals Gear Transportation
Gear
Pro
cess
ing
Gear Departure
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Inter Arrival time: Uniform 400 & 600 minutes. Entities per arrival: 10.
Gear type proportion: G1=0.5, G2=0.3, G3=0.2.
Reference for Operations Sequence.
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Station Name: Arrive Dock Transporter name: Fork Truck Transporter preference: Smallest Distance
Transporter destination: By Sequence Transporter speed: 100 feet/minute
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Station Name: Milling Station
Transporter name: Fork Truck
Resource: Milling Machine Process time: From Sequence
Transporter name: Fork Truck Transporter preference: Smallest Distance
Transporter destination: By Sequence Transporter speed: 100 feet/minute
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Station Name: Milling Station
Transporter name: Fork Truck Departure from Job Shop
Recording Flow Time
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0
10
20
30
40
50
Drilling Milling Painting Polishing
0.6656
14.6109
44.8111
3.0743
Wait
ing T
ime(M
inute
s)
Gear delays at operation locations
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0
10
20
30
40
50
Drilling
M/C
Milling
M/C
Paint Booth Polishing
Worker
Fork Truck
8.98 12.48
44.8
29.88
37.63
Uti
lizati
on, %
Resource Utilization
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0
50
100
150
200
250
G1 G2 G3
240.46
153.2
105.16
Flo
w T
ime, M
inute
s
Gear Flow Time (by Type)
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0.6656
14.6109
44.8111
3.0743
0
10
20
30
40
50
Drilling Milling Painting Polishing
Wait
ing T
ime(M
inute
s)
Gear delays at operation locations
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GEAR DELAYS AT OPERATION LOCATIONS
Initial Suggestion
Drilling 0.6656 0.6556
Milling 14.6109 14.619
Painting 44.8111 16.082
Polishing 3.0743 8.945
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RESOURCE UTILIZATION
Initial Suggestion
Drilling M/C 8.98 8.98
Milling M/C 12.48 12.48
Paint Booth 44.8 29.86
Polishing Worker 29.88 29.86
Fork Truck 37.63 37.42
Increase the number of Paint booth from two to three.
GEAR FLOW TIME
Initial Suggestion
G1 240.46 203.02
G2 153.2 141.93
G3 105.16 103.93
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Tayfur Altiok & Benjamin Melamed. 2007. Simulation Modeling and Analysis with Arena (2nd ed.), Elsevier Inc.
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David Kelton W., Randall P. Sadowski, Deborah A. Sadowski. 2001. Simulation with Arena (2nd ed.), McGraw Hill.
R. Tavakkoli, M., Daneshmand Mehr. 2005. A Computer Simulation Model for Job Shop Scheduling Problems Minimizing Makespan, Computers & Industrial Engineering, 48, 811–823.
Rahime Sancar E. & Arslan O. 2009. Simulation Analysis of Lot Streaming in Job Shops with Transportation Queue Disciplines, Simulation Modelling Practice and Theory, 17,442–453.
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