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.

Workstation/Process Time Problem 7.4 Part Type Workstation/Process Time Part 1 A 5.5,9.5,13.5 C 8.5,14.1,19.7 Part 2 8.9,13.5,18.1 B 9,15,21 4.3,8.5,12.7 Part 3 8.4,12,15.6 5.3,9.35,13.7 Part 4 9.2,12.6,16.0 8.6,11.4,14.2

Problem 7.4 Arrival Station Station A Station C Station B Exit Station 1 Station A Station C 1 2 1 2 2 2 1 4 3 3 Station B Exit Station Part 1 Part 2 Part 3 Part 4 3 3

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 Sets Add 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 Transfer Panel” 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 part Sequence 1 Assignment Made at step 1 Assignment Made at step 2

Problem 7-4: Part 2 Sequence Part 2 Sequence Steps Assignment made at Step 1 Assignment made at Step 2 Assignment made at Step 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 Exit Station Arrival Station Leaving Workstation A Entering Workstation A Leaving Workstation B Entering Workstation B Entering Workstation C Leaving Workstation C

Problem 7-4: Animate Stations and Routes Station Icon with Menu settings Route Icon with Menu settings

Problem 7-4: Animate Resources Icon for resources animation. Make sure you Check “seize area”.

Homework Problem 7-8 in textbook Work in groups of 2 Submit 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 Arena 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