反应金属冲击反应过程的理论分析

基于1维冲击波理论和粉末材料的冲击温度计算模型对反应金属的冲击响应行为、冲击温度及冲击反应过程进行了理论分析,分别考虑了材料密实度、冲击速度对冲击压力、冲击温度的影响;结合粉末材料冲击温度计算结果及冲击反应的化学动力学方法,提出了考虑反应效率的反应金属冲击反应理论模型。利用新模型得到的计算结果与已有实验结果吻合较好。反应金属的冲击反应行为受密实度、冲击速度及材料种类影响明显。 更多还原

Theory analysis on shock-induced chemical reaction of reactive metal

Based on the one-dimensional shock wave theory and the powder shock temperature rising model, dynamical shock response, shock temperature rising and shock-induced chemical reaction were theoretically analyzed for reactive metals under high-velocity impact by considering the effects of material compactness and impact velocity on shock pressure and shock temperature, respectively. By combining the calculated shock temperature of the power material and the chemical dynamics of shock-induced reaction, a thermo-chemical model for shock-induced reaction in reactive metal materials was presented by taking reaction efficiency into account. The calculated results by the new model presented in this paper are in agreement with the corresponding experiments by L. S. Bennett, et al. Shock-induced chemical reaction characteristics of reactive metal can be influenced evidently by material compactness, impact velocity and material kind.