Arena Examples: Assembly Line | Stations & Conveyors
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 Published On Sep 7, 2024

This video coverts the Assembly Line.doe file, an interesting example featuring Stations and Conveyors.

This is an example of a small assembly line.
Parts arrive to the system and proceed through 4 different stations where
manual operations take place. Operations can be highly variable. Variability makes the performance measures - total production, WIP, and cycle time - difficult to predict. Simulation will provide decision-makers with very realistic metrics to justify their future system changes.

The Station module defines a station (or a set of stations) corresponding to a physical or logical location where processing occurs. If the Station module defines a station set, it is effectively defining multiple processing locations.

The station (or each station within the defined set) has a matching Activity Area that is used to report all times and costs accrued by the entities in this station. This Activity Area’s name is the same as the station. If a parent activity area is defined, then it also accrues any times and costs by the entities in this station.

The Access module allocates one or more consecutive cells of a conveyor to an entity for movement from one station to another. Once the entity has control of the cells on the conveyor, it may then be conveyed to the next station.

When an entity arrives at an Access module, it will wait until the appropriate number of contiguous cells on the conveyor are empty and aligned with the entity’s station location.

The Convey module moves an entity on a conveyor from its current station location to a specified destination station.

The time delay to convey the entity from one station to the next is based on the velocity of the conveyor (specified in the Conveyor module) and the distance between the stations (specified in the Segment module). The actual transfer time may be greater than this minimum if the conveyor id disengaged or the entity ecounters a local blockage before reaching its destination.

When an entity enters the Convey module, its Station attribute (Entity.Station) is set to the destination station. The entity is then conveyed to the destination station.

If the destination type is specified as By Sequence, the next station is determined by the entity’s Sequence and Jobstep within the sequence (attributes Entity.Sequence and Entity.JobStep, respectively).

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