Lab Module 02 Serial Manufacturing Line
Lab Module 05
Entity Routing
Copyright 2013 - Jeffrey S. Smith and Simio LLC | All Rights
Reserved1Learning Simio Lab Series1Objectives and OutlineLab
ObjectivesContinue learning basic Simio modelingLearn two different
methods to route entities in SimioLink Selection WeightsDynamic
routing using node lists
Lab OutlineVideo 1 Using Selection Weights for probabilistic
routingVideo 2 Using Selection Weights for conditional routingVideo
3 Using Node Lists for dynamic routingVideo 4 Assignments
Copyright 2013 - Jeffrey S. Smith and Simio LLC | All Rights
Reserved2Video 1 Using Selection Weights for Routing TV final
adjustment and inspection processTVs arrive at the rate of 20/hour
(exponential interarrival times)Adjustment takes approximately 2
minutes (uniformly distributed between 1.75 and 2.25)Inspection
takes approximately 1.75 minutes (exponentially distributed)20% of
inspected TVs are found to need re-adjustmentInterested in Time In
System, Number In System, Utilizations of Adjust and
Inspect3Copyright 2013 - Jeffrey S. Smith and Simio LLC | All
Rights ReservedAdjustArriveInspectDepart
80% Pass20% FailRe-entrant Flow and Effective Arrival
Rate4Copyright 2013 - Jeffrey S. Smith and Simio LLC | All Rights
Reservedlp1-pSelection Weights5Copyright 2013 - Jeffrey S. Smith
and Simio LLC | All Rights Reservedw1w2wnLink selection probability
for link i :Video 2 Conditional Routing Using Selection WeightsTV
final adjustment and inspection processTVs arrive at the rate of
20/hour (exponential interarrival times)Adjustment takes
approximately 2 minutes (uniformly distributed between 1.75 and
2.25)Inspection takes approximately 1.75 minutes (exponentially
distributed)20% of inspected TVs are found to need
re-adjustmentInterested in Time In System, Number In System,
Utilizations of Adjust and Inspect6Copyright 2013 - Jeffrey S.
Smith and Simio LLC | All Rights
ReservedAdjustArriveInspectDepart
80% Pass20% FailMaximum of 3 adjustments for a given TVVideo 3
Dynamic Routing Using Node Lists 7Copyright 2013 - Jeffrey S. Smith
and Simio LLC | All Rights
ReservedServer1ArriveDepartServer2Server3Approx. 10 minutesApprox.
5 minutesApprox. 1 minuteArrival rate: 60/hourVideo 4 -
Assignment8Copyright 2013 - Jeffrey S. Smith and Simio LLC | All
Rights ReservedUsing the TV Adjust/Inspect model:Fix the issue
where the TVs are adjusted the 4th (and inspected) time even though
we know that they will be rejected after inspection. Hint: Start by
inserting a Basic Node in the path from the Inspect server back to
the Adjust server.Create a reference property for the maximum
number of adjustments allowed and develop an experiment that
compares the configurations with values 1, 2, 3, 4, 5, 100.Video 4
- Assignment9Copyright 2013 - Jeffrey S. Smith and Simio LLC | All
Rights ReservedUsing the dynamic routing model (from the third
video):Develop an experiment with 25 replications using a run
length of 500 hours with a 250 hour warm-up and responses for the
three server utilizations, the entity time in system (TIS) and
entity number in system (NIS)Using the base model, compare the 5
performance metrics using the following routing
alternatives:Probabilistic routing using the selection weights
6/78, 12/78, and 60/78Preferred order with capacity 5 buffers at
each serverUsing AssociatedStationOverload with no buffers
(capacity 0 buffers)Using AssociatedStationOverload with capacity 5
buffersUsing the shortest queue length with infinite capacity
buffers
