simulation assigment using Arena program

ISE 405 Assignment 03

1.

Original model in Assignment 02 is shown to production manager. He pointed out

that this is only the first shift of a two-shift day and should be run for 10 days 16

hours per day (10 replications). He suggested the following things based on the

results from the previous model:

 On second shift there are two operators at Rework (the bottleneck station)

 The Sealer fails sometimes

- Uptimes ~ exponential, mean 120 minutes

- Repair times ~ exponential, mean 4 minutes

Modify the existing model with the information above and then compare the

results with Assignment 02.doe.

1. Scheduled utilization

2. Record the Number of Scrapped Parts & Avg. Scrapped Parts Time in system (Use two Records)

3. Record the Number of Salvaged Parts & Avg. Salvaged Parts Time in system (Use two Records)

4. Record the Number of Shipped Parts & Avg. Shipped Parts Time in system (Use two Records)

2.

A flow line layout manufacturing shop, where manufactured parts (single type) are arriving at a rate of 3

parts/hr. Parts needs to pass through three consecutive machines namely: Drill, Tapping, and Painting

machine. Processing times of the parts on the mentioned machines are shown in the following table:

Resource Processing Time (minutes)

Drill Machine Triangular (2,4,5)

Tapping Machine Normal (3,1)

Painting Machine Uniform (4,6)

The Tapping machine is subjected to random breakdowns. The failure pattern is as follows

Uptimes ~ exponential, mean 2 hours

Repair times ~ exponential, mean 4 minutes

Develop an ARENA model with base time in minutes, and run it for five days 8-hours shifts (10

replications) to obtain the utilization of the different resources.

Note: The report should include:

1- An MS-WORD file contains the answers for the above questions, 2- The ARENA models file (i.e. *****.doe).