抄録
Underwater shock waves generated by explosives provide superior processing range and precision due to their high energy density, outperforming other shock-wave-based material processing methods. However, practical applications require minimizing explosive usage for safety and efficiency. Detonators contain the smallest amount of explosive for practical use. A major challenge in underwater detonator explosions is the rapid pressure attenuation caused by the threedimensional expansion of shock wave energy. To mitigate this, shock wave reflections from walls can be utilized to control propagation direction and reduce pressure attenuation, thereby improving processing efficiency. Depending on the wall geometry, the shock wave front can be flattened while maintaining high pressure, ensuring uniform force application and enhancing processing quality. This study developed a numerical model using Ansys Autodyn to simulate underwater detonator explosions. The propagation of shock waves captured through high-speed imaging and the measured pressure closely matched the simulation results, validating the model’s accuracy. These findings provide a foundation for optimizing reflective wall designs, contributing to enhanced material processing techniques and improved shock wave convergence applications.
