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用多火花式动态光弹性仪成功地记录了爆炸载荷作用下有限平面中应力波传播的动态应力条纹。一个模型中炮孔设在模型的几何形心,另一个模型中设了两个炮孔,并同时起爆。用动光弹方法对入射波和反射波的传播以及应力波的叠加特性进行了研究,给出了应力波反射之前炮孔周围应力场的定量分析结果和反射应力波与径向裂纹相互作用的结果,这对于涂刻理解炸药爆炸产生的应力波的传播和叠加过程具有重要意义。
The multi-spark dynamic photoelasticity apparatus successfully records the dynamic stress fringes of stress wave propagation in a finite plane under the action of explosive loads. In one model, the blasthole is located in the geometric center of the model, and in the other model, two blastholes are set and detonated at the same time. The characteristics of the propagation of the incident and reflected waves and the superposition characteristics of the stress waves are studied using the dynamic photoelastic method. The quantitative analysis results of the stress field around the blasthole before the reflection of the stress wave and the interaction between the reflected stress waves and radial cracks are given. As a result, this is of great significance for the understanding of the propagation and superposition processes of the stress waves generated by explosive explosions.