Full Aeroelastic Model Design and Modal Parameter Identification of MAN Type Dry Gas Tank

In order to design and produce an aero-elastic model that satisfies the dynamic characteristics of MAN type dry gas tanks and the similarity criterion of fluid dynamics, main contributing modes of the wind-induced vibration of the gas tank are identified using the mode energy participation factors of background response and the resonant response. Then, influencing parameters of the full aero-elastic model design are analyzed. The influence of mass dissimilarity on the wind-induced response of the full aero-elastic model is discussed, and a correction method is proposed. In addition, the manufacture technique of the full aero-elastic model for the Man type dry gas tank is expounded, and modal parameters of the full aero-elastic model for the gas tank are identified by a modal test. The results show that the first ten steps of mode parameters of the MAN type dry gas tank are the dominant contributing modes of wind-induced response; the internal pressure has less than 5% effect on the structural stiffness; it is only necessary to simulate a similar Cauchy number during the model design process; the difference between the corrected wind-induced response influenced by mass dissimilarity and the wind-induced response of the primary structure is less than 3%; and, the measured amplitude-frequency and vibration mode characteristics of the full aero-elastic model meet the design requirements.