The Study on the influence of wave load on the vibration of shaft system

摘要

In order to avoid the vessel deformation affected the safety of the system caused by the wave load. Using the AQWA software to calculate the wave hydrodynamic pressure and using the APDL language to compile the program loading implement wave loads on hull automatically different wave high, researching the changes of separate support stiffness and all the support stiffness for shafting natural frequency. The results show that: from the point of separate bearing stiffness changes view, the stern tube bearing stiffness has effect on the low order natural frequency of the shaft is relatively large, no effect on the high order frequency almost; with the increase of wave height, bearing oil film rigidity improved, the shafting vibration frequency decreases. Therefore, in consideration of hull deformation, this paper lays a foundation for the research on the vibration of the shafting.