三维Hopkinson杆：土动力试验的新方法
3D Hopkinson bar: new experiments for dynamic testing on soils
摘要：
利用分离式霍普金森压杆法可以直接分析材料的动态响应。对于土壤，由于试样的力学性能通常较差，因此必须进行调整。提出了一种新颖的实验装置--三维分离式霍普金森压杆（3D SHPB）。它允许测量土壤的完整三维动态响应。使用不同类型的限制系统。并将不同加载路径下的试验结果与砂土和粘土的试验结果进行了比较。在粒度水平上的分析给出了关于粉碎过程的进一步的要素。
英文摘要：
The direct analysis of the dynamic response of materials is possible using Split Hopkinson pressure bar method. For soils, it has to be adapted since the specimen has generally poor mechanical properties. An original experimental arrangement called "Three-Dimensional Split Hopkinson Pressure Bar" (3D SHPB) is proposed. It allows the measurement of the complete three-dimensional dynamic response of soils. Different types of confinement systems are used. The results on different loading paths are compared with other works on sand and clay. The analysis at grain-size level gives further elements on the comminution process.
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