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Numerical Simulation of Dynamic Response Characteristic of Charge Structure under Two Types of Penetration Loads
ZHANG Li-jian, GUO Hong-wei, LÜ Yong-zhu, LI Bao-hua
Modern Defense Technology    2021, 49 (5): 111-117.   DOI: 10.3969/j.issn.1009-086x.2021.05.015
Abstract503)      PDF (4971KB)(420)       Save
To study the dynamic response characteristics of charge structure under two types of penetration loads,the models of warhead penetrating integral concrete target and multi-layer interval concrete target are constructed respectively.Using LS-DYNA software,the process of dynamic penetrating concrete target is simulated.The difference of impact load,the distribution of plastic deformation area in charge,and the change of the gap between charge tail and shell are compared and analyzed.The results show that the charge mainly bears the axial overload,plastic deformation occurs at the front section of charge for the integral concrete target.For the multi-layer interval concrete target,the lateral overload is greatly increased.The charge tail,the local side of the charge and the corner point between charge and shell become the area with large plastic deformation.Under the condition of penetration,there are repeated contact collision and separation between charge tail and shell.Compared with the integral target,the dynamic collision between charge and shell is more frequent,more intense and lasts longer in the penetration process of multi-layer interval target.
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