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Shaft Fatigue - Nauticus Machinery

Shaft fatigue and lifecycle calculations of marine shafts

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Nautcus Machinery Shaft Fatigue software

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