Simulate and Achieve Results

With our fixes in place, we will once again run the simulation to see if the changes now allow us to meet our goal of 40 units/week.

In the Simulation Properties dialog, set the number of replications to 100.
Click the Start button to run the simulation.
When the simulation is complete, choose to view the output results.

We see in the output the following compared to the simulation with variability:

Average throughput has increased from 193.05 units/5 weeks (38.61/week) to 206.16 units/5 weeks (41.23 units/week).
Average cost has decreased by $2.02 per unit.

The chart below shows a full comparison of the simulation with variability to the simulation with fixes.

	With Variability	With Fixes	Difference
Throughput	193.05	206.16	13.11
Avg WIP	16.89	19.36	2.47
Avg Cycle Time	98.01	107.53	9.52
Avg Cost	213.43	211.46	-1.97
Resource Utilization
Inspector	75.55	69.75	-5.80
Line Op 1	62.37	67.54	5.17
Line Op 2	66.96	73.29	6.33
Old Test Unit	N/A	10.05	N/A
Rework Op	73.13	89.28	16.15
Test Unit	68.59	70.65	2.06

With these changes, we now know that our process will achieve its goal of 40 units/week.

Please Note: If you are not seeing the same results as described above, you may need to double check your model against the reference tutorial model for this point in the tutorial, Tutorial4.vsd, which is in the same directory as the Tutorial.vsd file.

Please Continue to Step 4: Implement Hierarchical Modeling