Parameter Optimization Of Air Spring Vibration Isolation System Of Ship Main Engine In Static Stability

Air spring is a high-performance vibration isolation components, it could be used to control vessels dynamic mechanical vibration of ships effectively. The dynamic mechanical loads is very large, but the installation space on the ships is limited, so need for small size, high pressure air spring to meet the need, and set reasonable parameters of the vibration isolation system.As the most widely used real transition to air spring, A stiffness calculation method based on thermodynamics and deflection geometry is presented in the paper. take the theoretical analysis as the foundation, has given the general design steps of air spring vibration isolator. the stress calculation formulas of the cord strengthen shell structure have been deduced, the equilibrium angle has been deduced too. Established the dynamics model of main engine vibration isolation system's, discussed fit and unfit quality of each kind of vibration isolation arrangement way, in this paper, we take the Inclined as the vibration isolator arrangement way, obtained its natural frequency characteristic; combine with the actual main engine's stability request, applies the MATLAB software's genetic algorithm tool to do multi-objectives optimize of the vibration isolation system, obtained the vibration isolation system parameters which suited the actual need.