Calculate fatigue stress system effect factor (DNVGL-RP-C203 section F.5).
The system effect factor accounts for the statistical variation in test samples, and actual load cases. The standard SN curves include an allowance for standard deviation (mean minus two standard deviations).
Tool Input
- devtype : Standard Deviation Type
- Slognu : User Defined Standard Deviation Of log N
- systype : System Effect Factor Type
- nsu : User Defined Number Of Connections
- Lweld : Weld Length
- Lref : Reference Length
Tool Output
- Rs : Sytem Effect Factor
- Slogn : Standard Deviation