<p>Ballistic vests are designed to absorb impact from the bullets and save human life in case of hostile situations. Bullets released from guns can travel at high speed carrying huge kinetic energies which must be absorbed by these vests. There are developments of many materials for manufacturing of ballistic vest in which most widely used material for protection against bullets is Kevlar-29, possessing good toughness and impact resistant properties. There are possibilities of increasing its impact resistant by using different structures/pattern of Kevlar plates. In this work, finite element analysis is done taking consideration of different plates having interlock 3D structure with and without gaps between Kevlar-29 plates. Typical parameters such as equivalent Von-Mises stress, weight of the plate and deformations are compared and discussed for various varieties of patterns with different orientation during the simulation in FEA software.</p> Graphical abstract <p>A systematic simulation and analysis of kevlar-29 based ballistic vest</p> <p></p>