Research on the Cushion Structure of Charge in High Speed Penetration Warhead
To study the influence of typical buffer structures and buffer materials on the protective performance of charge in ul-tra high speed penetration warheads,and to reduce the charge response caused by strong overload and harsh environment during penetration,numerical simulation of a warhead at a speed of 1400 m/s penetrating a concrete target using LS-DYNA is carried out. By analyzing the mechanical response of unbuffered charges during projectile penetration,the direction of buffer structure design is determined,and the effects of different materials,thicknesses of buffer blocks and buffer layers on the charging envi-ronment are studied. The results show that the buffer block has a significant protective effect on the front section of the charge,and can significantly reduce the stress and overload peak of the charge;The buffer layer structure tends to improve the consis-tency of the overall stress changes of the charge,making the overall stress environment changes of the charge more uniform. The optimal buffer block structure is 30 mm thick polycarbonate,which can reduce the overload and stress peak of the charge by 20％ and 34％ respectively;The optimal buffer layer structure is 4 mm thick polytetrafluoroethylene,with a reduction of 19％ and 9％ in charge overload and stress peak,respectively.
万方数据
维普
