1. ETM 607 – Simulation Software and Arena Modeling
Review simulation software.
“Hands-on” experience with a discrete-event simulation software package, Arena.
simple single server queue
input, model logic, outputs
additional logic features
In-class exercise, model and analyze complex process

2. ETM 607 – In-Class Exercise
Camshaft Machining Line
Process Flow
Grind “Main Bearings”
Grind Lobes
Polish Lobes

3. ETM 607 – In-Class Exercise
Camshaft Machining Line – Process Details
Operation Name Cycle Time Downtime Dress
Main Grinder ~Unif(5.6,6.0) ~Exp(540) 100 cycles
Rep. ~Norm(15,5) ~Unif(10,11)
Lobe Grinder ~Tria(12.1,12.5,15.0) ~Exp(360) 50 cycles
Rep. ~Norm(25,5) ~Unif(8,9)
Polisher ~Unif(3.2,3.4) cycle
~Norm(12,2) 20 10 20 30 : : 10 20

4. ETM 607 – In-Class Exercise
Camshaft Machining Line – Process Details
Develop an Arena Model of the Camshaft Machining Line
Include unplanned downtime
Include dress cycles
Determine the minimum number of machines for each operation to support a production rate of 250 camshafts per shift
Assume a shift is 450 minutes
Output Analysis
Report queue sizes, machine utilization, machine downtime for various “number of machine” combinations.
Provide a recommendation for the number of machines for each operation.
group results to