Probabilistic Design and Analysis Framework (PRODAF)
PRODAF is a suite of software tools that are used to integrate user-supplied simulation codes into a probabilistic design/analysis system. It allows system-level reliability constraints to impact component-level designs and interfaces user-selected, physics-based deterministic modeling codes with a Fast Probability Integration code to obtain high-fidelity probabilistic component failure rate data. The computed component failure rates are input into a system-level probabilistic risk assessment code such as QRAS or SAPHIRE. A feedback loop from the risk assessment tool to the analysis/design tools enables the system-level reliability constraint to affect the component design. Accuracy measures of the probability calculations (confidence intervals) are provided to account for uncertainties in the uncertainty parameters. Design variable optimization is accelerated through the use of adaptive response surface modeling.
Users define the design/analysis process using PRODAF’s Design Process Manager which identifies the sequence of codes to be used and their input/output relationship to each other.