The results show an apparent decay in the Hugoniot elastic limit with increasing propagation distance, as well as a stress relaxation behind the elastic wave front, and nearly 44% loss of Hugoniot elastic limit was observed in the present sample thickness range. 实验结果显示:Hugoniot弹性极限随着传播距离呈指数衰减,在所研究的样品厚度范围内,Hugoniot弹性极限减小了44%;