Shaft Fatigue

With the Nauticus Machinery Shaft Fatigue software you can dimension and evaluate marine shafting systems in addition to calculating load-carrying capacity.

Marine shaft software

• Calculates allowable torsional vibration stress levels based on low cycle, high cycle and transient fatigue
• Applicable for marine propulsion and auxiliary shafts onboard ships and marine applications
• Calculates load-carrying capacity based on methods described in DNV’s Classification Note no. 41.4
• Calculation method mainly based on DIN 743 Part 1-3: 2000-04 and VDEH 1983 – adapted to marine applications
• Calculates ice class strength according to Finnish-Swedish Ice Class Rules and IACS Polar Ice Class Rules
• Includes empirical formulas for calculation of stress concentration factors for all common “stress raisers” in marine shafts
• For direct coupled propulsion systems, geared propulsion systems and generator sets
  

Key benefits of the Shaft Fatigue software module

• Helps you avoid unnecessary shaft failure with advanced shaft fatigue software analysis
• Efficient determination of load-carrying capacity for shafts
• Calculates several critical sections of the shaft in one batch
• Easy input of notch geometry by extensive use of relevant figures
• Easy to do parameter studies for stress concentration factors
• Uses simplified methods (less input) or detailed methods (more input)
• Estimation of maximum torque load and blade failure load due to ice impacts
• Accumulated shaft fatigue analysis due to ice impacts
• Guidelines and default parameters supporting ice class calculations
• The full report contains both main class and ice class results