Research on explosive cutting of an injection molded PMMA material
In order to study the explosive cutting characteristics of a certain injection molded PMMA material,the op-timal range of explosion height was obtained through linear shaped charge explosive cutting PMMA target plate experi-ments.Combined with engineering practice,target plate cutting experiments were carried out under multi medium condi-tions,and simulation calculations were conducted using finite element simulation.The research results indicate that as the ex-plosion height increases,the penetration ability of linear shaped charge to PMMA target plate first increases and then de-creases,and the optimal explosion height range is 1.5～3.0 mm;The fracture of PMMA target plate during explosive cutting is mainly caused by jet penetration and spallation.The proportion of jet penetration is about 56.5％,and the proportion of spallation is about 43.5％.
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