Problem 1: Build a simulation model using
Problem 1: Build a simulation model using Simul8 for a five-machine-four-buffer production line. You can directly use the Simul8 example file I uploaded to HuskyCT. The machines all have processing time of exactly 1 min (fixed constant). The up- and downtimes of the machines all follow exponential distribution with MTBF = 40 min and MTTR = 10 min. Each buffer has capacity of 10. (a) Use Simul8 to estimate the (steady state) throughput of the production line. (b) Use Simul8 to estimate the (steady state) average work-in-process of each buffer. (c) Use Simul8 to estimate the (steady state) starvation and blockage of each machine. (d) Use Simul8 to estimate the (steady state) utilization of each machine (i.e., fraction of time the machine is working). (e) Comment on your observations of the system performance measures obtained above. (f) Now, if you have a chance to decrease one machine’s cycle time to 0.5 min, which one should it be in order to maximize the resulting throughput? Use simulation to support your answer. For (a)-(d) and (f Problem 2: Build a simulation model using Simul8 for a five-machine-four-buffer production line. The machines all have processing time of exactly 1 min (fixed constant). The up- and downtimes of the machines all follow exponential distribution with MTBF = 80 min and MTTR = 20 min. Each buffer has capacity of 10. (a) Use Simul8 to estimate the steady state throughput of the production line. (b) Compare your result with the one of Problem 1(a) and comment on your observation. (c) Now make the capacities of all buffers equal to 20 and rerun your simulation. What are the system throughput, the average WIP of each buffer, and each machine’s starvation, blocking and utilization rates? Compare your results with those of Problem 1(a,b,c,d) and comment on your observation
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