Visualization and numerical analysis of stress waves in blasting process
Visualization and numerical analysis of stress waves in blasting process
复制标题
爆破过程中应力波的可视化与数值分析
DOI：
10.1007/bf03181464
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发表时间：
2003
影响因子：
1.8
通讯作者：
S. Itoh
中科院分区：
文献类型：
--
作者：
S. Matsumoto;Yuichi Nakamura;S. Itoh
从实验和理论两方面对爆破过程中应力波在材料中的传播及其与材料自由表面的相互作用进行了可视化研究。PMMA（聚甲基丙烯酸甲酯）板用作透明材料。应力波是由电雷管起爆产生的。用调Q红宝石激光器作光源，用阴影照相系统观察了直角拐角PMMA试件中的应力波。除实验外，还采用光滑粒子流体动力学（SPH）方法对爆破过程中应力波的动力学行为进行了数值分析。通过实验和数值分析，可以直观地看到应力波在自由表面的透射和反射。
Visualization studies were performed both experimentally and theoretically to observe stress wave propagation in a material and its interaction with the free surface of the material in a blasting process. PMMA (polymethyl-methacrylate) plates were used as a transparent material. The stress wave was generated by initiation of an electric detonator. The stress waves in the PMMA specimen with the right-angled corner were observed by means of the shadowgraph system using a Q switched ruby laser as a light source. In addition to the experiment, a numerical analysis using smoothed particle hydrodynamics (SPH) was also carried out to clarify the dynamic behavior of stress waves in the blasting process. Transmittance and reflection of the stress wave at the free surface could be visualized by both the experiment and the numerical analysis.