Dimensioning of shafting systems
Life-cycle calculations of shaft based on basic or simplified methods
Nauticus Machinery Shaft Fatigue can calculate the load carrying capacity based on the methods described in DNV’s Classification Note no. 41.4. The calculation method is mainly based on the DIN 743 Part 1-3: 2000-04 and VDEH 1983, but it is adapted to marine applications. The tool is applicable for marine propulsion and auxiliary shafts onboard ships and marine applications.
The purpose of the program is to calculate allowable torsional vibratory stress levels based on low cycle, high cycle and transient fatigue. The results can be obtained either by using simplified methods (less input) or detailed methods (more input). The program includes empirical formulas for calculation of stress concentration factors for all common “stress raisers” in marine shafts.
Benefits
- Efficient determination of load carrying capacity for shaft
- Calculate several critical sections of the shaft in one batch
- Easy input of notch geometry by extensive use of relevant figures
- Get acceptance criteria for torsional vibration response calculations
- Easy to do parameter studies for stress concentration factors
Applications
- Direct coupled propulsion system
- Geared propulsion system
- Generator sets
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