This page has been automatically translate with Google from the Italian language.

CHAPTER V Experiments plan

5.5 Conclusions

The job has been oriented to the development of models of simulation of one supply chain based on the approach system dynamics. This language of graphical modellazione is one of the great advantages of the models constructed with Powersim Study and offers the possibility to create clear and transparent structures.
To be developed a simulation model, for the management of the warehouse supplyes, in order to test the main potentialities of the software and its characteristics.
After to have defined all the variable ones and to have inizializzato the system in equilibrium, the object of the study has been that one to observe the behavior of the model under various conditions of variation of the orders of the customer.
Such study has been facilitated from the possibility, offered from the software, of being able to bring back in diagrams and tables the course of the variable ones in the period of simulation and to be able to confront them is in the event of various conditions of the question (unexpected increase of 20% or chance variation) is in the event of various political of management of the waited for orders (model to mobile pursuit or average).
The comparison has allowed to evidence the meaningful variations in the management of the warehouse and of the back orders to you. The simulation with Powesim Study allows therefore to develop and to examine various strategies in a computer before perfecting them in the real world.
An other characteristic that has been thought important in the study of the simulation models is that Powersim offers the possibility to directly communicate with Microsoft Excel to the aim to render available diagrams and tables of comparison that concur to visualize the differences in adopting various strategies of management of the supply chain.
As far as the phase of learning of I use it of the software has been stated a sure difficulty begins them due to the clarity and semplicità of the handbook of the customer above all as far as the mathematical functions not to associate to the variable diagrams (flows, levels, constants, etc..).
Fortunately the presence, inside of the package software of tutorial demonstrated to you has rendered little ostica the phase than study. After all it can be asserted that, given the dinamicità (es. variability of the question) and chance (es. previewed indisponibilità of a machine) of the productive systems is not always easy to answer in precise way to questions that imply important implications are economic that operated to you.
The dinamicità sets up from the market, the requirements to arrange quality and costs, integration of the factories in the optical of the supply chain force to ristudiare the production processes constantly.
In this optical the simulation is an effective instrument in order to help the manager to take decisions in optimal way is to operating strategic level that.
From it turns out to you obtained, putting to comparison the two models of simulation with question to chance variation and step in the various political of the attended orders, for the management of the warehouse has been found that:

As far as the management of the backlogs, putting to comparison the two political of forecast of the question it has been found that:
  • In the model with variation of the question to step using one political of forecast of the mobile question to average, in the part centers them of the simulation catches up a level of products in backlogs (the 26 widgets) more high that in the event to pursuit (25 widgets); such difference then is cancelled in the final part of the simulation in which the for both models number of back orders door to you to an equal constant value to 24 widgets.
  • In the model to chance variation of the question I use it of the two political different of forecast of the question does not involve substantial differences in the management of the backlogs.
The phase experiences has regarded them ….but the analyses of comparison or study in general terms of a productive system can be extended to all the others members of the model (es. to the productive phase, the finding of the crude materials, etc) and this based on the specific requirements of the company to the aim to find one correct solution for a oculata management of all the system.
The job developed in this thesis is a departure point that has put in evidence the potentialities of the used software. They have been analyzes some aspects to you of the management of supply chain, regarding a management of the warehouse under various political of forecast of the question, but the analysis job can be widened to all the rest of the system (finding of the materials, production, etc).



Top | Summary | < < Previous | Next > >
/en/home.php" TARGET="_blank">>> Home Page <<