Delft University of Technology
Faculty Mechanical, Maritime and Materials Engineering
Transport Technology

K. Balder Stochastic project planning
Computer program, Report 2008.TEL.7287, Transport Engineering and Logistics.

Computer software is increasingly used to assist in the process of project planning. As project planning gets more complex as the included tasks increase, software can greatly aid in reducing complexity. Every project can be divided in a certain amount of activities. As every activity has a variable execution time, total project completion time is often uncertain. Furthermore, some activities probably will be indicative for total project completion times. These activities will form the critical path of the project.

In this report, the development of a generic simulation program is described. The program can be used to run any kind of project several times in order to identify likely completion times and critical paths. Execution times of every single activity are varied with every run made using a newly defined distribution function. The simulation is based upon a conceptual model, made using the process interaction method. This method makes sure the conceptual model can be easily implemented in an object-oriented programming language such as Delphi, using the module TOMAS. The simulation program includes a real-time animation, increasing insight in the project execution process and the differences in critical paths during different simulation runs. Furthermore, it provides an easy user interface to inspect activity properties during operation.

After verification of the simulation, an experimental case is elaborated. The case includes an aircraft maintenance program, including an extensive network of activities. Using this experimental case, the value of using the simulation program for project planning purposes is illustrated.

Reports on Transport Engineering and Logistics (in Dutch)
Modified: 2008.10.17; , TU Delft / 3mE / TT / LT.