1. Nanjing University of Science and Technology, School of Mechanical Engineering, Nanjing, 210094, China;
2. Inner Mongolia North Heavy Industries Group Co. , Ltd. , Baotou 014033, China
Abstract：In order to study the damage mechanism of blunt impact,the“gelatin-thorax”bionic human torso was built firstly.Then,the synchronous test system was designed to study the pistol bullet penetrating into armor covered bionic human torso.Pressure sensors were buried in the position of the heart and left lung to get dynamic pressure characteristics of these two places.When the heart was under blunt impact,the peak pressure in the position of the heart reached 2.40 MPa,the peak pressure in the position of the left lung reached 1.30 MPa; When the impact point was at the right lung,the peak pressures,which spread to the positions of the heart and left lung,were 0.39 MPa and 0.25 MPa,respectively; When the impact point was at the liver,the peak pressures,which spread to the positions of the heart and left lung,were almost equal to 0.10 MPa.The penetration process captured by a high-speed camera,presented that the soft body armor occurred very large transient deformations and then spring back with the elastic deformation of human torso.A 3cm height plastic bulge was formed on the back face of the soft armor.These results can provide references to blunt trauma evaluation and body armor design.
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