Author(s)

Z. Tian & B. Zhang

Abstract

In order to protect people and equipment from being damaged by fragments, using LS-DYNA software, this paper investigates numerically the processes of fragments impacting on a structure formed by interlaced double t steel, which is a common industry product. In the calculations, the steel fragment mass is from 0.3kg to 23kg and the velocities are from 30m/s to 100m/s. The material models are Johnson-Cook models in which parameters are adjusted through the comparison with the experimental result. It can be found from the simulations that two or three double t steel of the protection structure can hold up the fragments with small mass, high velocity, and different incident angle. For a large fragment with low velocity, many double t steel of the protection structure take effect and block the fragment. The conclusion is that the easy-made protection struc

Keywords