Transient Dynamic Finite Element Analysis of the Air-defence Weapon System Mount Assembly of Tracked Vehicle

A detailed finite element model of the existing Air-Defence Weapon System (ADWS) mount assembly of a military tracked vehicle, has been developed in Abaqus/CAE and modal dynamic analyses have been carried out. A mathematical vibration model of the gun recoil system has been developed in Matlab, in order to estimate the transmitted force variation during gun firing as well as the gun recoil. The frequency spectrum of transmitted force variation, has been analysed in correlation with extracted eigen values of the mount assembly, followed by dynamic analysis during rapid firing of 5 rounds. Based on modal dynamic analysis, required design modifications have been carried out by stiffening the mount structure at appropriate locations, and firing accuracies were obtained within acceptable limits. This study would be a useful approach to design of any gun mount assembly.