The soft-stiff rings of the experimental box are used to ensure axial softness and radial stiffness; the veridical experiments simulate better the one-dimensional plane strain motion.

• 由于采用了软硬环试验箱体以保证箱体的轴向柔性及径向刚性技术，验证性试验比较好地模拟了介质的一维平面应变运动。