Analysis of dynamic characteristic and parameter sensitivity of diamond back wing

To study the dynamic characteristic of diamond back wing and Relevant influencing factors, a fine three-dimensional model and assembly of the main components of the small diameter bomb are established in Pro/E. The ANSYS software is used to analyze the dynamic characteristics of the equivalent density model, and the free mode of the full bomb is calculated. Then the global structure sensitivity analysis is executed, and the Spearman rank correlation coefficient between the design parameters of the wing and its mode was calculated by the Monte-Carlo method. The results show that the main vibration mode of the small diameter bomb in the range of 5~500Hz is caused by the wing. The parameters of significant influence on the mode are the thickness of the front and rear wings, as well as rear wing length, which should be verified in structural dynamics design.