Penny Fab WIP=1.

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Presentation transcript:

Penny Fab WIP=1

The Penny Fab

The Penny Fab (WIP=1) Time = 0 hours

The Penny Fab (WIP=1) Time = 2 hours

The Penny Fab (WIP=1) Time = 4 hours

The Penny Fab (WIP=1) Time = 6 hours

The Penny Fab (WIP=1) Time = 8 hours

The Penny Fab (WIP=1) Time = 10 hours

The Penny Fab (WIP=1) Time = 12 hours

The Penny Fab (WIP=1) Time = 14 hours

The Penny Fab (WIP=1) Time = 16 hours

Penny Fab Performance

Penny Fab WIP=2

The Penny Fab (WIP=2) Time = 0 hours

The Penny Fab (WIP=2) Time = 2 hours

The Penny Fab (WIP=2) Time = 4 hours

The Penny Fab (WIP=2) Time = 6 hours

The Penny Fab (WIP=2) Time = 8 hours

The Penny Fab (WIP=2) Time = 10 hours

The Penny Fab (WIP=2) Time = 12 hours

The Penny Fab (WIP=2) Time = 14 hours

The Penny Fab (WIP=2) Time = 16 hours

The Penny Fab (WIP=2) Time = 18 hours

Penny Fab Performance

Penny Fab WIP=4

The Penny Fab (WIP=4) Time = 0 hours

The Penny Fab (WIP=4) Time = 2 hours

The Penny Fab (WIP=4) Time = 4 hours

The Penny Fab (WIP=4) Time = 6 hours

The Penny Fab (WIP=4) Time = 8 hours

The Penny Fab (WIP=4) Time = 10 hours

The Penny Fab (WIP=4) Time = 12 hours

The Penny Fab (WIP=4) Time = 14 hours

Penny Fab Performance

Penny Fab WIP=5

The Penny Fab (WIP=5) Time = 0 hours

The Penny Fab (WIP=5) Time = 2 hours

The Penny Fab (WIP=5) Time = 4 hours

The Penny Fab (WIP=5) Time = 6 hours

The Penny Fab (WIP=5) Time = 8 hours

The Penny Fab (WIP=5) Time = 10 hours

The Penny Fab (WIP=5) Time = 12 hours

Penny Fab Performance

Penny Fab Two 2 hr 5 hr 3 hr 10 hr

Penny Fab Two 0.5 0.4 0.6 0.67 0.4 p/hr 20 hr 8 pennies rb = ____________ T0 = ____________ W0 = ____________

Penny Fab Two Simulation (Time=0) 2 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=2) 7 4 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=4) 7 6 9 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=6) 7 8 9 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=7) 17 12 8 9 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=8) 17 12 10 9 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=9) 17 19 12 10 14 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=10) 17 19 12 12 14 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=12) 17 19 17 22 14 14 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=14) 17 19 17 22 16 19 24 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=16) 17 19 17 22 19 24 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=17) 27 19 22 22 20 19 24 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=19) 27 29 22 22 20 24 24 22 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=20) 27 Note: job will arrive at bottleneck just in time to prevent starvation. 29 22 22 22 24 24 22 2 hr 5 hr 3 hr 10 hr

Penny Fab Two Simulation (Time=22) 27 29 27 32 25 24 24 24 2 hr 5 hr 3 hr Note: job will arrive at bottleneck just in time to prevent starvation. 10 hr

Penny Fab Two Simulation (Time=24) 27 29 27 32 25 29 34 27 2 hr 5 hr 3 hr And so on…. Bottleneck will just stay busy; all others will starve periodically 10 hr

Worst Case Observation: The Best Case yields the minimum cycle time and maximum throughput for each WIP level. Question: What conditions would cause the maximum cycle time and minimum throughput? Experiment: set average process times same as Best Case (so rb and T0 unchanged) follow a marked job through system imagine marked job experiences maximum queueing

Worst Case Penny Fab Time = 0 hours

Worst Case Penny Fab Time = 8 hours

Worst Case Penny Fab Time = 16 hours

Worst Case Penny Fab Time = 24 hours