水下爆炸载荷作用下气背固支方板的动态响应分析

分析了炸药水中爆炸冲击载荷作用下气背固支钢方板的动态响应过程. 通过对不同装药量和炸距下的水下爆炸冲击作用试验,使用更准确的水介质冲击载荷模型,采用改进的强化系数方形屈服线假设和刚线性硬化材料屈服模型,对固支气背薄钢方板的2种运动形态的动态响应过程进行了理论分析,得到了板的动态响应解析解并进行了典型情况下的计算. 结果表明,实验和理论计算结果有较好的一致性,验证了理论假设与分析的合理性.

Dynamic Response of Rectangular Air-Back Plate to Underwater Exploding Loading

A study on the dynamic response of rectangular air-back steel plate to underwater exploding loading is given. Several underwater explosion experiments have been performed at different depths and using different explosive charges. Based on the more accurate underwater impulse loading model, rigid linear-hardening plastic yield model and square hardening-factor yielding line supposition, the two transient movement states of the shocked plates air-back to underwater shock loading were analyzed. The analytical equations set and its numerical calculation performed. The results showed that both the experiments and theoretical analyses were satisfactory and approved the theoretical hypothesis and model.