Abstract
Modelling of propeller shaft dynamics at pulse load The article discusses a method of modelling of propeller shaft dynamics at the presence of virtually introduced underwater detonation effects. The propeller shaft model has four degrees of freedom, which provides opportunities for introducing shaft displacements and rotations similar to those observed in a real object. The equations of motion, taking into account the action of external agents, were implemented to the Matlab SIMULINK environment. The obtained time-histories and their spectra were compared with the experimental results of the tests performed on the marine testing ground. The performed model identification confirmed its sensitivity to changing parameters of motion and external actions.
Highlights
The article discusses a method of modelling of propeller shaft dynamics at the presence of virtually introduced underwater detonation effects
The following actions were introduced to the proposed dynamic model [2]: main engine driving torque screw propeller anti-torque axial thrust force the action resulting from changes in relative positions of load-carrying bearings and thrust bearings in the shaft line the action of the hydrodynamic pressure generated by an underwater detonation
The propeller shaft model was an object of simulation tests to check its sensitivity to the action of external agents and compliance with the behaviour of the object in the conditions of the simulated environmental action [5]
Summary
The propeller shaft model was an object of simulation tests to check its sensitivity to the action of external agents and compliance with the behaviour of the object in the conditions of the simulated environmental action [5]. The proposed model is nonlinear, and an attempt to describe it by linearisation of actions is unacceptable as it may lead to incorrect conclusions resulting from possible superposition of the effects observed in linear systems [3]. Since in the equations of motion the time is represented explicitly, this system is non-autonomous. The kinetic energy of the presented system was written as:
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
