VULKAN provides the following types of analyses for VULKAN Composite shaft lines in case of order.
Static analysis of the shaft line (alignment calculation): The analysis is done with a 3D model of the shaft line for the load cases torque, ship hull deflections, shock loads etc. Based on the calculation results the static and fatigue strength is checked according to recognized standards and rules of the Classification Societies.
Linear vibrations modal analysis of the shaft line: For the modal (whirling) analysis the entire drive train and the engine is modeled including the stiffness of the engine mounts. Depending on the required extent of detailed information also single components like membrane couplings are included in the modal analysis in order to find local natural frequencies.
The assessment of the natural frequencies is done by means of a Campbell diagram thereby determining resonance points of the structure with provided excitation frequencies.
Harmonic forced lateral vibration analysis: Response amplitudes of the shaft line and engine will be calculated by forced harmonic vibration analysis for the 3D model. In special cases (e.g. shock spectra) a response spectrum analysis can be performed. Furthermore rotor dynamic analyses are made upon request.
The calculations are performed by means of the actual version of ANSYS (Mechanical APDL and Workbench) and analytical programs. The 3D models are prepared with Pro Engineer and ANSYS DesignModeler.