GoldSim encourages a top-down approach to modeling. In a top-down approach, the system is initially represented in a simple manner, and then evolves (and becomes more detailed and realistic) as more information about the system is obtained. A top-down approach to modeling is inherently an iterative approach. To illustrate this, let's consider an example of modeling the reliability of a computer.
Following a top-down approach, our first attempt at modeling the reliability of the computer might be very simple. In particular, we might begin by using a single Function element to represent the computer, and assign an exponential (constant) failure rate to model the computer's reliability. The Function element's dialog for this simple representation is shown below:
In this particular case, we have specified that the reliability of the computer can be modeled by assuming that it has an exponential failure rate, with a mean of 1/400 days (the Failure Rate input field is set to 0.0025 day-1, or 1/400 days).
A quick look at the dialog reveals a number of options and fields which can be used to incorporate additional detail and complexity into the model as the system becomes better quantified. Once a preliminary model has been developed and run, users will typically develop an improved, more realistic model using some of the more advanced features of the Reliability Module.
In the next
- Adding Failure Modes to a Reliability Element
- Documenting Your Reliability Model
- Modeling Hierarchical Systems of Components
- Representing Logical Relationships Between Components
- The Reliability Elements
- Top-Down Modeling Using the Reliability Module
- Using GoldSim's Probabilistic Simulation Engine
- Viewing and Analyzing Results