We are having trouble duplcating the Windchill Quality Solutions RBD calculations. We have tried a simple problem and the tool calculation is different then the hand calculations.
We have a 2 of 3 parallel operating block with an individual MTBF of 1000 for each of the items placed in seires with a block with an mtbf of 500.
Goal was to verify effective system MTBF.
Hand methods show answer as 312.5, but RBD results are at 350. We've looked at all the setups and parameters and can't determine why it is different.
Anyone else experieinced similar results not matchiing hand calculations like this ?