有机玻璃板爆炸切割超压与应变研究

Study on Overpressure and Strain of Plexiglass Plate Explosion Cutting

为了校正炸药材料的本构方程和状态方程参数和有机玻璃的本构方程参数并检验有机玻璃爆炸切割数值仿真精度,进行了有机玻璃平板爆炸切割试验,得到了空气中的爆炸冲击波超压和有机玻璃板的动态应变。采用非线性动态分析程序LS-DYNA对切割过程进行了数值模拟,得到了所测位置的冲击波超压与动态应变,与试验所得数据基本吻合。

In order to correct the constitutive equation and state equation parameters of explosive materials and the constitutive equation parameters of plexiglass, and to test the accuracy of numerical simulation of plexiglass explosion cutting, the explosion cutting test of plexiglass plate was carried out, and the explosion shock wave overpressure and the dynamic strain of plexiglass plate in air were obtained. The numerical simulation of the cutting process is carried out by using the nonlinear dynamic analysis program Ls-dyna, and the shock wave overpressure and dynamic strain of the measured position in the test were obtained, and the results are in good agreement with the data obtained from the test.