DSS Lab October 23, 2003

Input Analyzer

Create text file of data Save text file as:

Textfile.dst

Open input analyzer Click “new” icon Click “use existing data file” icon Browse for Textfile.dst On “Fit” pull down menu, select “fit

all” or a specific distribution

“new” icon

“use existing data file” icon

Problem 7.4

A part arrives every ten minutes to a system having three workstations (A,B, and C), where each workstation has a single machine; the first part arrives at time 0. There are four part types, each with equal probability of arriving. The process plans for the four part types are given on the next slide. The entries for the process times are the parameters for a triangular distribution. Assume that the transfer time between arrival and the first station, between all stations, and between the last station and the system exit is three minutes. Use the Sequence Feature to direct the parts through the system and to assign the processing times at each station. Use the Sets feature to collect cycle times (total times in system ) or each of the part types separately. Animate the model and run for 10,000 minutes.

Problem 7.4

Part Type Workstation/Process Time

Workstation/Process Time

Workstation/Process Time

Part 1 A

5.5,9.5,13.5

C

8.5,14.1,19.7

Part 2 A

8.9,13.5,18.1

B

9,15,21

C

4.3,8.5,12.7

Part 3 A

8.4,12,15.6

B

5.3,9.35,13.7

Part 4 B

9.2,12.6,16.0

C

8.6,11.4,14.2

Problem 7.4

Arrival Station

Station CStation A

Station B Exit Station

1

1

1

1

Part 1Part 2Part 3Part 4

2

32 2 2

3

3

34

Problem 7-4 – Create Arrivals

Problem 7.4 - Assignments

Problem 7.4- Arrival Station and Route

Problem 7-4: Workstation A

Problem 7-4 Workstations B & C

Define workstations B & C as you did for workstation A

Problem 7-4: Exit Station

Problem 7-4: Create SetsAdd the following sets, using “Set” spreadsheet under “Basic Process” Panel. To add members to the sets, click on tab under “Members” for the set of interest. Define the sets as shown.

3 sets to define Cycle Time Set members

Entity Type Set members Picture Set members

Problem 7-4: Define Advanced Set

Define advanced set using “Advanced Set” under “Advanced Process” Panel.

Advanced Set with members

Problem 7-4: Define Sequences

To define sequences, double click on “Sequences” under “Advanced Transfer Panel”. If the “Advanced TransferPanel” is not listed under the panels available on left of screen,go to file -> template panel -> attach.

Make sure the names used are the same names you defined in the advanced set.

Problem 7-4: Part Sequence 1

Steps for partSequence 1

AssignmentMade at step 1

Assignment Made at step 2

Problem 7-4: Part 2 SequencePart 2 Sequence Steps

Assignment made atStep 1

Assignment made atStep 2

Assignment made atStep 3

Problem 7-4: Part 3 and Part 4 Sequences

Complete similarly to Part 1 and Part 2 Sequences. Refer to chart on p.314 for process time at each step.

Problem 7-4: Animate

Arrival Station

Entering Workstation B

Entering Workstation CLeaving Workstation C

Exit Station

Entering Workstation ALeaving Workstation A

Leaving Workstation B

Problem 7-4: Animate Stations and Routes

Station Icon withMenu settings

Route Icon withMenu settings

Problem 7-4: Animate Resources

Icon for resources animation.Make sure youCheck “seize area”.

Homework

Problem 7-8 in textbookWork in groups of 2Submit Electronically to

dss_hw5 filename.doe

Don’t forget to animate the model as asked in problem statement.

Write down all stats asked for and display on flowchart page of Arena model/

Midterm

Total Possible = 100 Max = 99 Min = 30.5 Average = 63.14 Standard Deviation = 15.88 If you need to pick up your test see Chun-Ling.

Midterm

Theory Graded by Chun-Ling Total Possible = 65 points Max = 65 Min = 26.5 Average =46.97

Arena Graded by Natalie Total Possible = 35 Max = 40 Min = 0 Average = 16.17

Midterm

Midterm

Midterm

Midterm