Study of impact energy propagation phenomenon and modal characteristics of an armored vehicle undergoing high velocity impact

Abstract

A new manufacturing technology is being employed to build a new type of armored vehicle. While thick panels are welded together in the old manufacturing technology, relatively thin panels are welded to a frame structure in the new manufacturing technology. The structural integrity of the new type of armor vehicles can be maintained mainly by the frame structures while the panel thickness is reduced significantly to reduce the total vehicle weight. Since the dynamic characteristics of a frame-panel hybrid structure are different from those of the old type of structure which consists of only thick panels, they should be identified to achieve a good performance of the vehicle. For this purpose, a proper FE model of the hybrid type of structure needs to be developed. In the present study, FE models are proposed to represent the frame-panel hybrid type structure efficiently. The impact energy propagation, the transient response and the modal characteristics are investigated with the FE models.

Multiscale Simulations for Impact Load–Induced Vibration: Assessing a Structure's Vulnerability

“…These studies have analyzed the material behaviors, damage zones, and localized stress distributions near the impact location. The transfer of impact energy through a complex structure was simulated using a frame-panel structure [14]. Transient dynamic responses of the whole structure and modal characteristics were investigated using a finite element (FE) model.…”

Hilbert-Huang Transform (HHT) transient analysis of composite panel undergoing high-velocity impact

“…[10][11][12][13][14][15][16][17]), both experimental and analytical, has been performed. Most of the previous work, however, focused on plastic deformation of a panel during impact.…”